In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF due to race between btf_try_get_module and load_module While working on code to populate kfunc BTF ID sets for module BTF from its initcall, I noticed that by the time the initcall is invoked, the module BTF can already be seen by userspace (and the BPF verifier). The existing btf_try_get_module calls try_module_get which only fails if mod->state == MODULE_STATE_GOING, i.e. it can increment module reference when module initcall is happening in parallel. Currently, BTF parsing happens from MODULE_STATE_COMING notifier callback. At this point, the module initcalls have not been invoked. The notifier callback parses and prepares the module BTF, allocates an ID, which publishes it to userspace, and then adds it to the btf_modules list allowing the kernel to invoke btf_try_get_module for the BTF. However, at this point, the module has not been fully initialized (i.e. its initcalls have not finished). The code in module.c can still fail and free the module, without caring for other users. However, nothing stops btf_try_get_module from succeeding between the state transition from MODULE_STATE_COMING to MODULE_STATE_LIVE. This leads to a use-after-free issue when BPF program loads successfully in the state transition, load_module's do_init_module call fails and frees the module, and BPF program fd on close calls module_put for the freed module. Future patch has test case to verify we don't regress in this area in future. There are multiple points after prepare_coming_module (in load_module) where failure can occur and module loading can return error. We illustrate and test for the race using the last point where it can practically occur (in module __init function). An illustration of the race: CPU 0 CPU 1 load_module notifier_call(MODULE_STATE_COMING) btf_parse_module btf_alloc_id // Published to userspace list_add(&btf_mod->list, btf_modules) mod->init(...) ... ^ bpf_check | check_pseudo_btf_id | btf_try_get_module | returns true | ... ... | module __init in progress return prog_fd | ... ... V if (ret < 0) free_module(mod) ... close(prog_fd) ... bpf_prog_free_deferred module_put(used_btf.mod) // use-after-free We fix this issue by setting a flag BTF_MODULE_F_LIVE, from the notifier callback when MODULE_STATE_LIVE state is reached for the module, so that we return NULL from btf_try_get_module for modules that are not fully formed. Since try_module_get already checks that module is not in MODULE_STATE_GOING state, and that is the only transition a live module can make before being removed from btf_modules list, this is enough to close the race and prevent the bug. A later selftest patch crafts the race condition artifically to verify that it has been fixed, and that verifier fails to load program (with ENXIO). Lastly, a couple of comments: 1. Even if this race didn't exist, it seems more appropriate to only access resources (ksyms and kfuncs) of a fully formed module which has been initialized completely. 2. This patch was born out of need for synchronization against module initcall for the next patch, so it is needed for correctness even without the aforementioned race condition. The BTF resources initialized by module initcall are set up once and then only looked up, so just waiting until the initcall has finished ensures correct behavior.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    ipv4: Fix a data-race around sysctl_fib_sync_mem.(CVE-2022-49637)

    ima: Fix potential memory leak in ima_init_crypto().(CVE-2022-49627)

    MIPS: pgalloc: fix memory leak caused by pgd_free().(CVE-2022-49210)

    ip: Fix data-races around sysctl_ip_fwd_use_pmtu.(CVE-2022-49604)

    net: tipc: fix possible refcount leak in tipc_sk_create()(CVE-2022-49620)

    bpf, sockmap: Fix memleak in tcp_bpf_sendmsg while sk msg is full(CVE-2022-49209)

    net: remove two BUG() from skb_checksum_help().(CVE-2022-49497)

    usbnet: fix memory leak in error case(CVE-2022-49657)

    ip: Fix a data-race around sysctl_ip_autobind_reuse.(CVE-2022-49600)

    cipso: Fix data-races around sysctl.(CVE-2022-49639)

    nexthop: Fix data-races around nexthop_compat_mode.(CVE-2022-49629)

    tracing/histograms: Fix memory leak problem(CVE-2022-49648)

    SUNRPC: Fix the svc_deferred_event trace class(CVE-2022-49065)

    af_unix: Fix a data-race in unix_dgram_peer_wake_me().(CVE-2022-49344)

    RDMA/cm: Fix memory leak in ib_cm_insert_listen(CVE-2022-49671)

    ip: Fix a data-race around sysctl_fwmark_reflect.(CVE-2022-49602)

    raw: Fix a data-race around sysctl_raw_l3mdev_accept.(CVE-2022-49631)

    icmp: Fix data-races around sysctl.(CVE-2022-49638)

    tty: synclink_gt: Fix null-pointer-dereference in slgt_clean().(CVE-2022-49307)

    tipc: move bc link creation back to tipc_node_create(CVE-2022-49664)

    icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr.(CVE-2022-49632)

    xprtrdma: treat all calls not a bcall when bc_serv is NULL(CVE-2022-49321)

    net: phy: micrel: Allow probing without .driver_data(CVE-2022-49472)

    tcp/dccp: Fix a data-race around sysctl_tcp_fwmark_accept.(CVE-2022-49601)

    ip: Fix data-races around sysctl_ip_fwd_update_priority.(CVE-2022-49603)

    igb: fix a use-after-free issue in igb_clean_tx_ring(CVE-2022-49695)

    rxrpc: Fix listen() setting the bar too high for the prealloc rings(CVE-2022-49450)

    tty: fix deadlock caused by calling printk() under tty_port-lock(CVE-2022-49441)

    media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init(CVE-2022-49478)

    ima: Fix a potential integer overflow in ima_appraise_measurement(CVE-2022-49643)

    scsi: qla2xxx: Fix scheduling while atomic(CVE-2022-49156)

    mm/mempolicy: fix uninit-value in mpol_rebind_policy().(CVE-2022-49567)

    dm raid: fix KASAN warning in raid5_add_disks(CVE-2022-49673)

    padata: avoid UAF for reorder_work(CVE-2025-21726)

    ARM: hisi: Add missing of_node_put after of_find_compatible_node(CVE-2022-49447)

    ptp: Ensure info-enable callback is always set(CVE-2025-21814)

    bpf: Send signals asynchronously if !preemptible(CVE-2025-21728)

    ext4: don't BUG if someone dirty pages without asking ext4 first(CVE-2022-49171)

    ext4: fix ext4_mb_mark_bb() with flex_bg with fast_commit(CVE-2022-49174)

    dax: make sure inodes are flushed before destroy cache(CVE-2022-49220)

    ext4: avoid cycles in directory h-tree(CVE-2022-49343)

    ext4: fix bug_on in ext4_writepages(CVE-2022-49347)

    ext4: filter out EXT4_FC_REPLAY from on-disk superblock field s_state(CVE-2022-49348)

    ext4: fix use-after-free in ext4_rename_dir_prepare(CVE-2022-49349)

    ext4: fix warning in ext4_handle_inode_extension(CVE-2022-49352)

    PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store().(CVE-2022-49434)

    x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails(CVE-2022-49549)

    scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI(CVE-2022-49535)

    crypto: qat - add param check for RSA(CVE-2022-49563)

    dmaengine: idxd: Fix the error handling path in idxd_cdev_register()(CVE-2022-49422)

    RDMA/mlx5: Fix memory leak in error flow for subscribe event routine(CVE-2022-49206)

    bpf, arm64: Clear prog-jited_len along prog-jited(CVE-2022-49341)

    bpf: Fix UAF due to race between btf_try_get_module and load_module(CVE-2022-49236)

    bpf: Fix potential array overflow in bpf_trampoline_get_progs().(CVE-2022-49548)

    bpf: Fix insufficient bounds propagation from adjust_scalar_min_max_vals(CVE-2022-49658)

    zsmalloc: fix races between asynchronous zspage free and page migration(CVE-2022-49554)

    tpm: fix reference counting for struct tpm_chip(CVE-2022-49287)

    netfilter: nf_tables: initialize registers in nft_do_chain().(CVE-2022-49293)

    dm ioctl: prevent potential spectre v1 gadget(CVE-2022-49122)

    scsi: sd: Fix potential NULL pointer dereference(CVE-2022-49376)

    sysctl: Fix data races in proc_douintvec_minmax().(CVE-2022-49640)

    sysctl: Fix data races in proc_douintvec().(CVE-2022-49641)

    scsi: libfc: Fix use after free in fc_exch_abts_resp().(CVE-2022-49114)

    nbd: don't allow reconnect after disconnect(CVE-2025-21731)

    tpm: use try_get_ops() in tpm-space.c(CVE-2022-49286)

    cifs: potential buffer overflow in handling symlinks(CVE-2022-49058)

    extcon: Modify extcon device to be created after driver data is set(CVE-2022-49308)

    bfq: Update cgroup information before merging bio(CVE-2022-49413)

    cifs: prevent bad output lengths in smb2_ioctl_query_info().(CVE-2022-49271)

    media: cx24116: prevent overflows on SNR calculus(CVE-2024-50290)

    thermal/core: Fix memory leak in __thermal_cooling_device_register().(CVE-2022-49468)

    nbd: call genl_unregister_family() first in nbd_cleanup().(CVE-2022-49295)

    blk-mq: don't touch -tagset in blk_mq_get_sq_hctx(CVE-2022-49377)

    bfq: Make sure bfqg for which we are queueing requests is online(CVE-2022-49411)

    nvdimm: Fix firmware activation deadlock scenarios(CVE-2022-49446)

    nbd: fix io hung while disconnecting device(CVE-2022-49297)

    crypto: qat - add param check for DH(CVE-2022-49564)

    nbd: fix race between nbd_alloc_config() and module removal(CVE-2022-49300)

    net: usb: rtl8150: enable basic endpoint checking(CVE-2025-21708)

    scsi: target: tcmu: Fix possible page UAF(CVE-2022-49053)

    block: don't delete queue kobject before its children(CVE-2022-49259)

    md/bitmap: don't set sb values if can't pass sanity check(CVE-2022-49526)

    mm/slub: add missing TID updates on slab deactivation(CVE-2022-49700)

    block: Fix handling of offline queues in blk_mq_alloc_request_hctx().(CVE-2022-49720)

    ext4: fix race condition between ext4_write and ext4_convert_inline_data(CVE-2022-49414)

    ext4: fix bug_on in __es_tree_search(CVE-2022-49409)

    net: hns3: fix oops when unload drivers paralleling(CVE-2025-21802)

    irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions(CVE-2022-49715)

    mm/mempolicy: fix mpol_new leak in shared_policy_replace(CVE-2022-49080)

    ext4: fix bug_on ext4_mb_use_inode_pa(CVE-2022-49708)

    ext4: add reserved GDT blocks check(CVE-2022-49707)

    irqchip/gic-v3: Fix error handling in gic_populate_ppi_partitions(CVE-2022-49716)

    mm: fix unexpected zeroed page mapping with zram swap(CVE-2022-49052)

    scsi: qla2xxx: Fix crash during module load unload test(CVE-2022-49160)

    sctp: sysctl: rto_min/max: avoid using current-nsproxy(CVE-2025-21639)

    crypto: qat - fix memory leak in RSA(CVE-2022-49566)

    net/mlx5: Fix variable not being completed when function returns(CVE-2025-21662)

    scsi: storvsc: Ratelimit warning logs to prevent VM denial of service(CVE-2025-21690)

    vfio/platform: check the bounds of read/write syscalls(CVE-2025-21687)

    USB: serial: quatech2: fix null-ptr-deref in qt2_process_read_urb().(CVE-2025-21689)

    ipvs: fix UB due to uninitialized stack access in ip_vs_protocol_init().(CVE-2024-53680)

    bpf: fix recursive lock when verdict program return SK_PASS(CVE-2024-56694)

    mm: zswap: properly synchronize freeing resources during CPU hotunplug(CVE-2025-21693)

    filemap: avoid truncating 64-bit offset to 32 bits(CVE-2025-21665)

    iomap: avoid avoid truncating 64-bit offset to 32 bits(CVE-2025-21667)

    fs/proc: fix softlockup in __read_vmcore (part 2).(CVE-2025-21694)

    net: hns3: don't auto enable misc vector(CVE-2025-21651)

    netfilter: conntrack: clamp maximum hashtable size to INT_MAX(CVE-2025-21648)

    net_sched: cls_flow: validate TCA_FLOW_RSHIFT attribute(CVE-2025-21653)

    netfilter: ipset: Hold module reference while requesting a module(CVE-2024-56637)

    sctp: sysctl: auth_enable: avoid using current-nsproxy(CVE-2025-21638)

    sctp: sysctl: cookie_hmac_alg: avoid using current-nsproxy(CVE-2025-21640)

    af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK(CVE-2024-57901)

    net: sched: fix ordering of qlen adjustment(CVE-2024-53164)

    af_packet: fix vlan_get_tci() vs MSG_PEEK(CVE-2024-57902)

    geneve: do not assume mac header is set in geneve_xmit_skb().(CVE-2024-56636)

    RDMA/rxe: Remove the direct link to net_device(CVE-2024-57795)

    net/ipv6: release expired exception dst cached in socket(CVE-2024-56644)

    NFSD: Prevent NULL dereference in nfsd4_process_cb_update()(CVE-2024-53217)

    iommu/arm-smmu: Defer probe of clients after smmu device bound(CVE-2024-56568)

    net/sctp: Prevent autoclose integer overflow in sctp_association_init().(CVE-2024-57938)

    dlm: fix possible lkb_resource null dereference(CVE-2024-47809)

    vsock/virtio: discard packets if the transport changes(CVE-2025-21669)

    vsock: prevent null-ptr-deref in vsock_*[has_data|has_space](CVE-2025-21666)

    netfilter: nf_tables: adapt set backend to use GC transaction API(CVE-2023-52923)

    RDMA/uverbs: Prevent integer overflow issue(CVE-2024-57890)

    pinmux: Use sequential access to access desc-pinmux data(CVE-2024-47141)

    drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req().(CVE-2024-57798)

    selinux: ignore unknown extended permissions(CVE-2024-57931)

    eth: bnxt: always recalculate features after XDP clearing, fix null-deref(CVE-2025-21682)

    net: restrict SO_REUSEPORT to inet sockets(CVE-2024-57903)

    bpf: Fix bpf_sk_select_reuseport() memory leak(CVE-2025-21683)

    sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket(CVE-2024-53168)

    net: macsec: Fix offload support for NETDEV_UNREGISTER event(CVE-2022-48720)

    netfilter: nf_set_pipapo: fix initial map fill(CVE-2024-57947)

    RDMA/hfi1: Fix use-after-free bug for mm struct(CVE-2022-49076)

    tipc: fix use-after-free Read in tipc_named_reinit(CVE-2022-49696)

    net: bonding: fix use-after-free after 802.3ad slave unbind(CVE-2022-49667)

    usbnet: fix memory leak in error case(CVE-2022-49589)

    sfc: fix use after free when disabling sriov(CVE-2022-49626)

Tenable has extracted the preceding description block directly from the EulerOS kernel security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    xsk: Fix race at socket teardown(CVE-2022-49215)

    acct: perform last write from workqueue(CVE-2025-21846)

    nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags(CVE-2022-49492)

    drop_monitor: fix incorrect initialization order(CVE-2025-21862)

    iommu/arm-smmu-v3: check return value after calling platform_get_resource().(CVE-2022-49319)

    ipv4: Fix a data-race around sysctl_fib_sync_mem.(CVE-2022-49637)

    memcg: fix soft lockup in the OOM process(CVE-2024-57977)

    ima: Fix potential memory leak in ima_init_crypto().(CVE-2022-49627)

    rdma/cxgb4: Prevent potential integer overflow on 32bit(CVE-2024-57973)

    tracing: Make sure trace_printk() can output as soon as it can be used(CVE-2023-53007)

    trace_events_hist: add check for return value of 'create_hist_field'(CVE-2023-53005)

    Squashfs: fix handling and sanity checking of xattr_ids count(CVE-2023-52933)

    tcp: Fix a data-race around sysctl_tcp_probe_threshold.(CVE-2022-49595)

    tcp: Fix data-races around sysctl_tcp_min_snd_mss.(CVE-2022-49596)

    tcp: Fix data-races around sysctl_tcp_base_mss.(CVE-2022-49597)

    tcp: Fix data-races around sysctl_tcp_l3mdev_accept.(CVE-2022-49599)

    hrtimers: Force migrate away hrtimers queued after CPUHP_AP_HRTIMERS_DYING(CVE-2025-21816)

    RDMA/hfi1: Prevent use of lock before it is initialized(CVE-2022-49433)

    openvswitch: fix lockup on tx to unregistering netdev with carrier(CVE-2025-21681)

    net: hns3: add vlan list lock to protect vlan list(CVE-2022-49182)

    driver: base: fix UAF when driver_attach failed(CVE-2022-49385)

    ubi: ubi_create_volume: Fix use-after-free when volume creation failed(CVE-2022-49388)

    rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read(CVE-2024-58069)

    lz4: fix LZ4_decompress_safe_partial read out of bound(CVE-2022-49078)

    um: Fix out-of-bounds read in LDT setup(CVE-2022-49395)

    KVM: Explicitly verify target vCPU is online in kvm_get_vcpu().(CVE-2024-58083)

    ipv6: mcast: extend RCU protection in igmp6_send().(CVE-2025-21759)

    vsock: Keep the binding until socket destruction(CVE-2025-21756)

    pps: Fix a use-after-free(CVE-2024-57979)

    RDMA/hfi1: Fix use-after-free bug for mm struct(CVE-2022-49076)

    padata: fix UAF in padata_reorder(CVE-2025-21727)

    net: bonding: fix use-after-free after 802.3ad slave unbind(CVE-2022-49667)

    netfilter: nf_tables: avoid skb access on nf_stolen(CVE-2022-49622)

    srcu: Tighten cleanup_srcu_struct() GP checks(CVE-2022-49651)

    openvswitch: use RCU protection in ovs_vport_cmd_fill_info().(CVE-2025-21761)

    cgroup: Use separate src/dst nodes when preloading css_sets for migration(CVE-2022-49647)

    ice: arfs: fix use-after-free when freeing @rx_cpu_rmap(CVE-2022-49063)

    sfc: fix use after free when disabling sriov(CVE-2022-49626)

    macsec: fix UAF bug for real_dev(CVE-2022-49390)

    ndisc: extend RCU protection in ndisc_send_skb().(CVE-2025-21760)

    nfsd: release svc_expkey(CVE-2024-53216)

    nfsd: make sure exp active before svc_export_show(CVE-2024-56558)

    net: sched: Disallow replacing of child qdisc from one parent to another(CVE-2025-21700)

    tipc: fix use-after-free Read in tipc_named_reinit(CVE-2022-49696)

    arp: use RCU protection in arp_xmit().(CVE-2025-21762)

    nfsd: clear acl_access/acl_default after releasing them(CVE-2025-21796)

    ndisc: use RCU protection in ndisc_alloc_skb().(CVE-2025-21764)

    neighbour: use RCU protection in __neigh_notify().(CVE-2025-21763)

    scsi: hisi_sas: Free irq vectors in order for v3 HW(CVE-2022-49118)

    drm/plane: Move range check for format_count earlier(CVE-2021-47659)

    USB: hub: Ignore non-compliant devices with too many configs or interfaces(CVE-2025-21776)

    MIPS: pgalloc: fix memory leak caused by pgd_free().(CVE-2022-49210)

    bpf: avoid holding freeze_mutex during mmap operation(CVE-2025-21853)

    ip: Fix data-races around sysctl_ip_fwd_use_pmtu.(CVE-2022-49604)

    linux/dim: Fix divide by 0 in RDMA DIM(CVE-2022-49670)

    HID: multitouch: Add NULL check in mt_input_configured(CVE-2024-58020)

    nfp: bpf: Add check for nfp_app_ctrl_msg_alloc().(CVE-2025-21848)

    net: tipc: fix possible refcount leak in tipc_sk_create()(CVE-2022-49620)

    bpf, sockmap: Fix memleak in tcp_bpf_sendmsg while sk msg is full(CVE-2022-49209)

    net: remove two BUG() from skb_checksum_help().(CVE-2022-49497)

    usbnet: fix memory leak in error case(CVE-2022-49657)

    usbnet: fix memory leak in error case(CVE-2022-49589)

    ip: Fix a data-race around sysctl_ip_autobind_reuse.(CVE-2022-49600)

    cipso: Fix data-races around sysctl.(CVE-2022-49639)

    KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel(CVE-2025-21779)

    nexthop: Fix data-races around nexthop_compat_mode.(CVE-2022-49629)

    tracing/histograms: Fix memory leak problem(CVE-2022-49648)

    SUNRPC: Fix the svc_deferred_event trace class(CVE-2022-49065)

    af_unix: Fix a data-race in unix_dgram_peer_wake_me().(CVE-2022-49344)

    usb: xhci: Fix NULL pointer dereference on certain command aborts(CVE-2024-57981)

    ceph: fix memory leak in ceph_readdir when note_last_dentry returns error(CVE-2022-49107)

    NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify().(CVE-2022-49103)

    io_uring: fix memory leak of uid in files registration(CVE-2022-49144)

    RDMA/cm: Fix memory leak in ib_cm_insert_listen(CVE-2022-49671)

    ip: Fix a data-race around sysctl_fwmark_reflect.(CVE-2022-49602)

    hwrng: cavium - fix NULL but dereferenced coccicheck error(CVE-2022-49177)

    mlxsw: spectrum: Guard against invalid local ports(CVE-2022-49134)

    raw: Fix a data-race around sysctl_raw_l3mdev_accept.(CVE-2022-49631)

    icmp: Fix data-races around sysctl.(CVE-2022-49638)

    tty: synclink_gt: Fix null-pointer-dereference in slgt_clean().(CVE-2022-49307)

    iommu/arm-smmu: fix possible null-ptr-deref in arm_smmu_device_probe().(CVE-2022-49323)

    drm/virtio: fix NULL pointer dereference in virtio_gpu_conn_get_modes(CVE-2022-49532)

    scsi: qla2xxx: Suppress a kernel complaint in qla_create_qpair().(CVE-2022-49155)

    tipc: move bc link creation back to tipc_node_create(CVE-2022-49664)

    NFSv4: Don't hold the layoutget locks across multiple RPC calls(CVE-2022-49316)

    icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr.(CVE-2022-49632)

    xprtrdma: treat all calls not a bcall when bc_serv is NULL(CVE-2022-49321)

    net: phy: micrel: Allow probing without .driver_data(CVE-2022-49472)

    tcp/dccp: Fix a data-race around sysctl_tcp_fwmark_accept.(CVE-2022-49601)

    kernel/resource: fix kfree() of bootmem memory again(CVE-2022-49190)

    vrf: use RCU protection in l3mdev_l3_out().(CVE-2025-21791)

    tcp: Fix a data-race around sysctl_tcp_ecn_fallback.(CVE-2022-49630)

    i2c: dev: check return value when calling dev_set_name().(CVE-2022-49046)

    list: fix a data-race around ep-rdllist(CVE-2022-49443)

    perf/core: Fix data race between perf_event_set_output() and perf_mmap_close()(CVE-2022-49607)

    drm/amd/display: Fix memory leak(CVE-2022-49135)

    ip: Fix data-races around sysctl_ip_fwd_update_priority.(CVE-2022-49603)

    media: uvcvideo: Fix double free in error path(CVE-2024-57980)

    io_uring: prevent opcode speculation(CVE-2025-21863)

    geneve: Fix use-after-free in geneve_find_dev().(CVE-2025-21858)

    arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array(CVE-2025-21785)

    igb: fix a use-after-free issue in igb_clean_tx_ring(CVE-2022-49695)

    rxrpc: Fix listen() setting the bar too high for the prealloc rings(CVE-2022-49450)

    tty: fix deadlock caused by calling printk() under tty_port-lock(CVE-2022-49441)

    media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init(CVE-2022-49478)

    ima: Fix a potential integer overflow in ima_appraise_measurement(CVE-2022-49643)

    scsi: qla2xxx: Fix scheduling while atomic(CVE-2022-49156)

    scsi: lpfc: Fix SCSI I/O completion and abort handler deadlock(CVE-2022-49536)

    mm/mempolicy: fix uninit-value in mpol_rebind_policy().(CVE-2022-49567)

    KVM: VMX: Prevent RSB underflow before vmenter(CVE-2022-49610)

    dm raid: fix KASAN warning in raid5_add_disks(CVE-2022-49673)

    tpm: Change to kvalloc() in eventlog/acpi.c(CVE-2024-58005)

    media: uvcvideo: Remove dangling pointers(CVE-2024-58002)

    padata: avoid UAF for reorder_work(CVE-2025-21726)

    ARM: hisi: Add missing of_node_put after of_find_compatible_node(CVE-2022-49447)

    ptp: Ensure info-enable callback is always set(CVE-2025-21814)

    bpf: Send signals asynchronously if !preemptible(CVE-2025-21728)

    ext4: don't BUG if someone dirty pages without asking ext4 first(CVE-2022-49171)

    ext4: fix ext4_mb_mark_bb() with flex_bg with fast_commit(CVE-2022-49174)

    dax: make sure inodes are flushed before destroy cache(CVE-2022-49220)

    ext4: avoid cycles in directory h-tree(CVE-2022-49343)

    ext4: fix bug_on in ext4_writepages(CVE-2022-49347)

    ext4: filter out EXT4_FC_REPLAY from on-disk superblock field s_state(CVE-2022-49348)

    ext4: fix use-after-free in ext4_rename_dir_prepare(CVE-2022-49349)

    ext4: fix warning in ext4_handle_inode_extension(CVE-2022-49352)

    PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store().(CVE-2022-49434)

    x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails(CVE-2022-49549)

    scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI(CVE-2022-49535)

    crypto: qat - add param check for RSA(CVE-2022-49563)

    dmaengine: idxd: Fix the error handling path in idxd_cdev_register()(CVE-2022-49422)

    RDMA/mlx5: Fix memory leak in error flow for subscribe event routine(CVE-2022-49206)

    bpf, arm64: Clear prog-jited_len along prog-jited(CVE-2022-49341)

    bpf: Fix UAF due to race between btf_try_get_module and load_module(CVE-2022-49236)

    bpf: Fix potential array overflow in bpf_trampoline_get_progs().(CVE-2022-49548)

    bpf: Fix insufficient bounds propagation from adjust_scalar_min_max_vals(CVE-2022-49658)

    zsmalloc: fix races between asynchronous zspage free and page migration(CVE-2022-49554)

    tpm: fix reference counting for struct tpm_chip(CVE-2022-49287)

    netfilter: nf_tables: initialize registers in nft_do_chain().(CVE-2022-49293)

    dm ioctl: prevent potential spectre v1 gadget(CVE-2022-49122)

    scsi: sd: Fix potential NULL pointer dereference(CVE-2022-49376)

    sysctl: Fix data races in proc_douintvec_minmax().(CVE-2022-49640)

    sysctl: Fix data races in proc_douintvec().(CVE-2022-49641)

    scsi: libfc: Fix use after free in fc_exch_abts_resp().(CVE-2022-49114)

    nbd: don't allow reconnect after disconnect(CVE-2025-21731)

    tpm: use try_get_ops() in tpm-space.c(CVE-2022-49286)

    cifs: potential buffer overflow in handling symlinks(CVE-2022-49058)

    extcon: Modify extcon device to be created after driver data is set(CVE-2022-49308)

    bfq: Update cgroup information before merging bio(CVE-2022-49413)

    cifs: prevent bad output lengths in smb2_ioctl_query_info().(CVE-2022-49271)

    media: cx24116: prevent overflows on SNR calculus(CVE-2024-50290)

    thermal/core: Fix memory leak in __thermal_cooling_device_register().(CVE-2022-49468)

    nbd: call genl_unregister_family() first in nbd_cleanup().(CVE-2022-49295)

    blk-mq: don't touch -tagset in blk_mq_get_sq_hctx(CVE-2022-49377)

    bfq: Make sure bfqg for which we are queueing requests is online(CVE-2022-49411)

    nvdimm: Fix firmware activation deadlock scenarios(CVE-2022-49446)

    crypto: qat - add param check for DH(CVE-2022-49564)

    nbd: fix race between nbd_alloc_config() and module removal(CVE-2022-49300)

    nbd: fix io hung while disconnecting device(CVE-2022-49297)

    net: usb: rtl8150: enable basic endpoint checking(CVE-2025-21708)

    scsi: target: tcmu: Fix possible page UAF(CVE-2022-49053)

    block: don't delete queue kobject before its children(CVE-2022-49259)

    md/bitmap: don't set sb values if can't pass sanity check(CVE-2022-49526)

    mm/slub: add missing TID updates on slab deactivation(CVE-2022-49700)

    block: Fix handling of offline queues in blk_mq_alloc_request_hctx().(CVE-2022-49720)

    ext4: fix race condition between ext4_write and ext4_convert_inline_data(CVE-2022-49414)

    ext4: fix bug_on in __es_tree_search(CVE-2022-49409)

    net: hns3: fix oops when unload drivers paralleling(CVE-2025-21802)

    irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions(CVE-2022-49715)

    mm/mempolicy: fix mpol_new leak in shared_policy_replace(CVE-2022-49080)

    ext4: fix bug_on ext4_mb_use_inode_pa(CVE-2022-49708)

    ext4: add reserved GDT blocks check(CVE-2022-49707)

    irqchip/gic-v3: Fix error handling in gic_populate_ppi_partitions(CVE-2022-49716)

    mm: fix unexpected zeroed page mapping with zram swap(CVE-2022-49052)

    scsi: qla2xxx: Fix crash during module load unload test(CVE-2022-49160)

    sctp: sysctl: rto_min/max: avoid using current-nsproxy(CVE-2025-21639)

    crypto: qat - fix memory leak in RSA(CVE-2022-49566)

    net/mlx5: Fix variable not being completed when function returns(CVE-2025-21662)

    scsi: storvsc: Ratelimit warning logs to prevent VM denial of service(CVE-2025-21690)

    vfio/platform: check the bounds of read/write syscalls(CVE-2025-21687)

    USB: serial: quatech2: fix null-ptr-deref in qt2_process_read_urb().(CVE-2025-21689)

    ipvs: fix UB due to uninitialized stack access in ip_vs_protocol_init().(CVE-2024-53680)

    bpf: fix recursive lock when verdict program return SK_PASS(CVE-2024-56694)

    mm: zswap: properly synchronize freeing resources during CPU hotunplug(CVE-2025-21693)

    ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up(CVE-2025-21887)

    net: asix: add proper error handling of usb read errors(CVE-2022-49226)

    mm/khugepaged: fix -anon_vma race(CVE-2023-52935)

    HID: core: Fix assumption that Resolution Multipliers must be in Logical Collections(CVE-2024-57986)

    proc: fix UAF in proc_get_inode().(CVE-2025-21999)

    smb: client: Add check for next_buffer in receive_encrypted_standard().(CVE-2025-21844)

    exec: don't WARN for racy path_noexec check(CVE-2024-50010)

    kthread: unpark only parked kthread(CVE-2024-50019)

Tenable has extracted the preceding description block directly from the EulerOS kernel security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:1241-1 advisory.

    The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
    - CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238919).
    - CVE-2022-49739: gfs2: Always check inode size of inline inodes (bsc#1240207).
    - CVE-2023-52935: mm/khugepaged: fix ->anon_vma race (bsc#1240276).
    - CVE-2024-53124: net: fix data-races around sk->sk_forward_alloc (bsc#1234074).
    - CVE-2024-53176: smb: During unmount, ensure all cached dir instances drop their dentry (bsc#1234894).
    - CVE-2024-53178: smb: Do not leak cfid when reconnect races with open_cached_dir (bsc#1234895).
    - CVE-2024-56651: can: hi311x: hi3110_can_ist(): fix potential use-after-free (bsc#1235528).
    - CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
    - CVE-2024-58013: Bluetooth: MGMT: Fix slab-use-after-free Read in mgmt_remove_adv_monitor_sync     (bsc#1239095).
    - CVE-2024-58014: wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() (bsc#1239109).
    - CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
    - CVE-2025-21718: net: rose: fix timer races against user threads (bsc#1239073).
    - CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238911).
    - CVE-2025-21780: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() (bsc#1239115).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:1027-1 advisory.

    The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security bugfixes.


    The following security bugs were fixed:

    - CVE-2024-2201: Fixed information leak in x86/BHI (bsc#1217339).
    - CVE-2024-41092: drm/i915/gt: Fix potential UAF by revoke of fence registers (bsc#1228483).
    - CVE-2024-42098: crypto: ecdh - explicitly zeroize private_key (bsc#1228779).
    - CVE-2024-42229: crypto: aead,cipher - zeroize key buffer after use (bsc#1228708).
    - CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
    - CVE-2024-58014: wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() (bsc#1239109).
    - CVE-2025-21718: net: rose: fix timer races against user threads (bsc#1239073).
    - CVE-2025-21780: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() (bsc#1239115).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF due to race between     btf_try_get_module and load_module While working on code to populate kfunc BTF ID sets for module BTF from     its initcall, I noticed that by the time the initcall is invoked, the module BTF can already be seen by     userspace (and the BPF verifier). The existing btf_try_get_module calls try_module_get which only fails if     mod->state == MODULE_STATE_GOING, i.e. it can increment module reference when module initcall is happening     in parallel. Currently, BTF parsing happens from MODULE_STATE_COMING notifier callback. At this point, the     module initcalls have not been invoked. The notifier callback parses and prepares the module BTF,     allocates an ID, which publishes it to userspace, and then adds it to the btf_modules list allowing the     kernel to invoke btf_try_get_module for the BTF. However, at this point, the module has not been fully     initialized (i.e. its initcalls have not finished). The code in module.c can still fail and free the     module, without caring for other users. However, nothing stops btf_try_get_module from succeeding between     the state transition from MODULE_STATE_COMING to MODULE_STATE_LIVE. This leads to a use-after-free issue     when BPF program loads successfully in the state transition, load_module's do_init_module call fails and     frees the module, and BPF program fd on close calls module_put for the freed module. Future patch has test     case to verify we don't regress in this area in future. There are multiple points after     prepare_coming_module (in load_module) where failure can occur and module loading can return error. We     illustrate and test for the race using the last point where it can practically occur (in module __init     function). An illustration of the race: CPU 0 CPU 1 load_module notifier_call(MODULE_STATE_COMING)     btf_parse_module btf_alloc_id // Published to userspace list_add(&btf_mod->list, btf_modules)     mod->init(...) ... ^ bpf_check | check_pseudo_btf_id | btf_try_get_module | returns true | ... ... |     module __init in progress return prog_fd | ... ... V if (ret < 0) free_module(mod) ... close(prog_fd) ...
    bpf_prog_free_deferred module_put(used_btf.mod) // use-after-free We fix this issue by setting a flag     BTF_MODULE_F_LIVE, from the notifier callback when MODULE_STATE_LIVE state is reached for the module, so     that we return NULL from btf_try_get_module for modules that are not fully formed. Since try_module_get     already checks that module is not in MODULE_STATE_GOING state, and that is the only transition a live     module can make before being removed from btf_modules list, this is enough to close the race and prevent     the bug. A later selftest patch crafts the race condition artifically to verify that it has been fixed,     and that verifier fails to load program (with ENXIO). Lastly, a couple of comments: 1. Even if this race     didn't exist, it seems more appropriate to only access resources (ksyms and kfuncs) of a fully formed     module which has been initialized completely. 2. This patch was born out of need for synchronization     against module initcall for the next patch, so it is needed for correctness even without the     aforementioned race condition. The BTF resources initialized by module initcall are set up once and then     only looked up, so just waiting until the initcall has finished ensures correct behavior. (CVE-2022-49236)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:2458 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)

    * net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)

    * cpu: AMD CPUs may transiently execute beyond unconditional direct branch (CVE-2021-26341)

    * malicious data for FBIOPUT_VSCREENINFO ioctl may cause OOB write memory (CVE-2021-33655)

    * possible race condition in drivers/tty/tty_buffers.c (CVE-2022-1462)

    * KVM: NULL pointer dereference in kvm_mmu_invpcid_gva (CVE-2022-1789)

    * use-after-free in free_pipe_info() could lead to privilege escalation (CVE-2022-1882)

    * KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks (CVE-2022-2196)

    * netfilter: nf_conntrack_irc message handling issue (CVE-2022-2663)

    * race condition in xfrm_probe_algs can lead to OOB read/write (CVE-2022-3028)

    * out-of-bounds read in fib_nh_match of the file net/ipv4/fib_semantics.c (CVE-2022-3435)

    * race condition in hugetlb_no_page() in mm/hugetlb.c (CVE-2022-3522)

    * memory leak in ipv6_renew_options() (CVE-2022-3524)

    * data races around icsk->icsk_af_ops in do_ipv6_setsockopt (CVE-2022-3566)

    * data races around sk->sk_prot (CVE-2022-3567)

    * memory leak in l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c (CVE-2022-3619)

    * denial of service in follow_page_pte in mm/gup.c due to poisoned pte entry (CVE-2022-3623)

    * use-after-free after failed devlink reload in devlink_param_get (CVE-2022-3625)

    * USB-accessible buffer overflow in brcmfmac (CVE-2022-3628)

    * use after free flaw in l2cap_conn_del in net/bluetooth/l2cap_core.c (CVE-2022-3640)

    * Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed (CVE-2022-3707)

    * mptcp: NULL pointer dereference in subflow traversal at disconnect time (CVE-2022-4128)

    * l2tp: missing lock when clearing sk_user_data can lead to NULL pointer dereference (CVE-2022-4129)

    * igmp: use-after-free in ip_check_mc_rcu when opening and closing inet sockets (CVE-2022-20141)

    * lockdown bypass using IMA (CVE-2022-21505)

    * double free in usb_8dev_start_xmit in drivers/net/can/usb/usb_8dev.c (CVE-2022-28388)

    * network backend may cause Linux netfront to use freed SKBs (XSA-405) (CVE-2022-33743)

    * unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry (CVE-2022-39188)

    * TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED leading to guest malfunctioning     (CVE-2022-39189)

    * u8 overflow problem in cfg80211_update_notlisted_nontrans() (CVE-2022-41674)

    * use-after-free related to leaf anon_vma double reuse (CVE-2022-42703)

    * use-after-free in bss_ref_get in net/wireless/scan.c (CVE-2022-42720)

    * BSS list corruption in cfg80211_add_nontrans_list in net/wireless/scan.c (CVE-2022-42721)

    * Denial of service in beacon protection for P2P-device (CVE-2022-42722)

    * memory corruption in usbmon driver (CVE-2022-43750)

    * NULL pointer dereference in traffic control subsystem (CVE-2022-47929)

    * NULL pointer dereference in rawv6_push_pending_frames (CVE-2023-0394)

    * use-after-free due to race condition in qdisc_graft() (CVE-2023-0590)

    * use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195)

    * denial of service in tipc_conn_close (CVE-2023-1382)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.2 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
238226	EulerOS 2.0 SP13 : kernel (EulerOS-SA-2025-1635)	Nessus	Huawei Local Security Checks	high
238210	EulerOS 2.0 SP13 : kernel (EulerOS-SA-2025-1618)	Nessus	Huawei Local Security Checks	high
238183	EulerOS 2.0 SP12 : kernel (EulerOS-SA-2025-1590)	Nessus	Huawei Local Security Checks	high
238182	EulerOS 2.0 SP12 : kernel (EulerOS-SA-2025-1589)	Nessus	Huawei Local Security Checks	high
234407	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:1241-1)	Nessus	SuSE Local Security Checks	high
233410	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:1027-1)	Nessus	SuSE Local Security Checks	high
225146	Linux Distros Unpatched Vulnerability : CVE-2022-49236	Nessus	Misc.	high
175477	RHEL 9 : kernel (RHSA-2023:2458)	Nessus	Red Hat Local Security Checks	high

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