In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fix NULL deref caused by blkg_policy_data being installed before init blk-iocost sometimes causes the following crash: BUG: kernel NULL pointer dereference, address: 00000000000000e0 ... RIP: 0010:_raw_spin_lock+0x17/0x30 Code: be 01 02 00 00 e8 79 38 39 ff 31 d2 89 d0 5d c3 0f 1f 00 0f 1f 44 00 00 55 48 89 e5 65 ff 05 48 d0 34 7e b9 01 00 00 00 31 c0 <f0> 0f b1 0f 75 02 5d c3 89 c6 e8 ea 04 00 00 5d c3 0f 1f 84 00 00 RSP: 0018:ffffc900023b3d40 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 00000000000000e0 RCX: 0000000000000001 RDX: ffffc900023b3d20 RSI: ffffc900023b3cf0 RDI: 00000000000000e0 RBP: ffffc900023b3d40 R08: ffffc900023b3c10 R09: 0000000000000003 R10: 0000000000000064 R11: 000000000000000a R12: ffff888102337000 R13: fffffffffffffff2 R14: ffff88810af408c8 R15: ffff8881070c3600 FS: 00007faaaf364fc0(0000) GS:ffff88842fdc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000e0 CR3: 00000001097b1000 CR4: 0000000000350ea0 Call Trace: <TASK> ioc_weight_write+0x13d/0x410 cgroup_file_write+0x7a/0x130 kernfs_fop_write_iter+0xf5/0x170 vfs_write+0x298/0x370 ksys_write+0x5f/0xb0 __x64_sys_write+0x1b/0x20 do_syscall_64+0x3d/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 This happens because iocg->ioc is NULL. The field is initialized by ioc_pd_init() and never cleared. The NULL deref is caused by blkcg_activate_policy() installing blkg_policy_data before initializing it. blkcg_activate_policy() was doing the following: 1. Allocate pd's for all existing blkg's and install them in blkg->pd[]. 2. Initialize all pd's. 3. Online all pd's. blkcg_activate_policy() only grabs the queue_lock and may release and re-acquire the lock as allocation may need to sleep. ioc_weight_write() grabs blkcg->lock and iterates all its blkg's. The two can race and if ioc_weight_write() runs during #1 or between #1 and #2, it can encounter a pd which is not initialized yet, leading to crash. The crash can be reproduced with the following script: #!/bin/bash echo +io > /sys/fs/cgroup/cgroup.subtree_control systemd-run --unit touch-sda --scope dd if=/dev/sda of=/dev/null bs=1M count=1 iflag=direct echo 100 > /sys/fs/cgroup/system.slice/io.weight bash -c "echo '8:0 enable=1' > /sys/fs/cgroup/io.cost.qos" & sleep .2 echo 100 > /sys/fs/cgroup/system.slice/io.weight with the following patch applied: > diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c > index fc49be622e05..38d671d5e10c 100644 > --- a/block/blk-cgroup.c > +++ b/block/blk-cgroup.c > @@ -1553,6 +1553,12 @@ int blkcg_activate_policy(struct gendisk *disk, const struct blkcg_policy *pol) > pd->online = false; > } > > + if (system_state == SYSTEM_RUNNING) { > + spin_unlock_irq(&q->queue_lock); > + ssleep(1); > + spin_lock_irq(&q->queue_lock); > + } > + > /* all allocated, init in the same order */ > if (pol->pd_init_fn) > list_for_each_entry_reverse(blkg, &q->blkg_list, q_node) I don't see a reason why all pd's should be allocated, initialized and onlined together. The only ordering requirement is that parent blkgs to be initialized and onlined before children, which is guaranteed from the walking order. Let's fix the bug by allocating, initializing and onlining pd for each blkg and holding blkcg->lock over initialization and onlining. This ensures that an installed blkg is always fully initialized and onlined removing the the race window.

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

    netfilter: ctnetlink: remove refcounting in expectation dumpers(CVE-2025-39764)

    nvme: nvme-fc: Ensure -ioerr_work is cancelled in nvme_fc_delete_ctrl()(CVE-2025-40261)

    ipv4: ip_gre: make ipgre_header() robust(CVE-2026-23011)

    bonding: limit BOND_MODE_8023AD to Ethernet devices(CVE-2026-23099)

    iommu: disable SVA when CONFIG_X86 is set(CVE-2025-71089)

    mm/hugetlb: fix hugetlb_pmd_shared()(CVE-2026-23100)

    uacce: ensure safe queue release with state management(CVE-2026-23063)

    scsi: target: Reset t_task_cdb pointer in error case(CVE-2025-68782)

    leds: led-class: Only Add LED to leds_list when it is fully ready(CVE-2026-23101)

    usb: typec: ucsi: Handle incorrect num_connectors capability(CVE-2025-71108)

    net/sched: sch_qfq: do not free existing class in qfq_change_class()(CVE-2026-22999)

    SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf(CVE-2025-71120)

    perf/x86/amd: Check event before enable to avoid GPF(CVE-2025-68798)

    libceph: make decode_pool() more resilient against corrupted osdmaps(CVE-2025-71116)

    NFSD: NFSv4 file creation neglects setting ACL(CVE-2025-68803)

    x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1(CVE-2026-23005)

    nbd: defer config put in recv_work(CVE-2025-68372)

    net: hns3: using the num_tqps in the vf driver to apply for resources(CVE-2025-71064)

    net: sock: fix hardened usercopy panic in sock_recv_errqueue(CVE-2026-22977)

    uacce: implement mremap in uacce_vm_ops to return -EPERM(CVE-2026-23056)

    irqchip/gic-v3-its: Avoid truncating memory addresses(CVE-2026-23085)

    KVM: x86: Fix VM hard lockup after prolonged inactivity with periodic HV timer(CVE-2025-71104)

    net: openvswitch: fix middle attribute validation in push_nsh() action(CVE-2025-68785)

    libceph: make calc_target() set t-paused, not just clear it(CVE-2026-23047)

    NFS: Automounted filesystems should inherit ro,noexec,nodev,sync flags(CVE-2025-68764)

    macvlan: fix error recovery in macvlan_common_newlink()(CVE-2026-23209)

    regmap: Fix race condition in hwspinlock irqsave routine(CVE-2026-23071)

    nvme-tcp: fix NULL pointer dereferences in nvmet_tcp_build_pdu_iovec(CVE-2026-22998)

    net: hns3: add VLAN id validation before using(CVE-2025-71112)

    sctp: Prevent TOCTOU out-of-bounds write(CVE-2025-40331)

    crypto: virtio - Add spinlock protection with virtqueue notification(CVE-2026-23229)

    uacce: fix isolate sysfs check condition(CVE-2026-23094)

    net/sched: Enforce that teql can only be used as root qdisc(CVE-2026-23074)

    scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()(CVE-2026-23216)

    ipvlan: Make the addrs_lock be per port(CVE-2026-23103)

    RDMA/core: Check for the presence of LS_NLA_TYPE_DGID correctly(CVE-2025-71096)

    net: hv_netvsc: reject RSS hash key programming without RX indirection table(CVE-2026-23054)

    nfsd: provide locking for v4_end_grace(CVE-2026-22980)

    net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag(CVE-2026-23105)

    ACPICA: Avoid walking the Namespace if start_node is NULL(CVE-2025-71118)

    nvmet-tcp: fixup hang in nvmet_tcp_listen_data_ready()(CVE-2026-23179)

    tpm: Cap the number of PCR banks(CVE-2025-71077)

    sctp: move SCTP_CMD_ASSOC_SHKEY right after SCTP_CMD_PEER_INIT(CVE-2026-23125)

    migrate: correct lock ordering for hugetlb file folios(CVE-2026-23097)

    net: usb: pegasus: fix memory leak in update_eth_regs_async()(CVE-2026-23021)

    net/mlx5: fw_tracer, Validate format string parameters(CVE-2025-68816)

    scsi: qla2xxx: Delay module unload while fabric scan in progress(CVE-2025-71235)

    net: use dst_dev_rcu() in sk_setup_caps()(CVE-2025-40170)

    pNFS: Fix a deadlock when returning a delegation during open()(CVE-2026-23050)

    scsi: Revert 'scsi: qla2xxx: Perform lockless command completion in abort path'(CVE-2025-68818)

    ipvs: fix ipv4 null-ptr-deref in route error path(CVE-2025-68813)

    fsnotify: do not generate ACCESS/MODIFY events on child for special files(CVE-2025-68788)

    vsock/virtio: fix potential underflow in virtio_transport_get_credit()(CVE-2026-23069)

    ip6_gre: make ip6gre_header() robust(CVE-2025-71098)

    platform/x86: classmate-laptop: Add missing NULL pointer checks(CVE-2026-23237)

    net/sched: sch_qfq: Fix NULL deref when deactivating inactive aggregate in qfq_reset(CVE-2026-22976)

    blk-cgroup: Fix NULL deref caused by blkg_policy_data being installed before init(CVE-2023-54271)

    KVM: arm64: Prevent access to vCPU events before init(CVE-2025-40102)

    tracing: Add recursion protection in kernel stack trace recording(CVE-2026-23138)

    scsi: qla2xxx: Fix bsg_done() causing double free(CVE-2025-71238)

    mm/secretmem: fix use-after-free race in fault handler(CVE-2025-40272)

    vsock/virtio: cap TX credit to local buffer size(CVE-2026-23086)

    iomap: adjust read range correctly for non-block-aligned positions(CVE-2025-68794)

    ipv6: use RCU in ip6_xmit()(CVE-2025-40135)

    libceph: make free_choose_arg_map() resilient to partial allocation(CVE-2026-22991)

    tracing: Do not register unsupported perf events(CVE-2025-71125)

    netfilter: nf_tables: avoid chain re-validation if possible(CVE-2025-71160)

    io_uring/io-wq: check IO_WQ_BIT_EXIT inside work run loop(CVE-2026-23113)

    HID: uclogic: Correct devm device reference for hidinput input_dev name(CVE-2023-54207)

    scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()(CVE-2026-23193)

    scsi: core: Wake up the error handler when final completions race against each other(CVE-2026-23110)

    vsock: fix lock inversion in vsock_assign_transport()(CVE-2025-40231)

    bonding: annotate data-races around slave-last_rx(CVE-2026-23212)

    be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list(CVE-2026-23084)

    inet: frags: flush pending skbs in fqdir_pre_exit()(CVE-2025-68768)

    ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()(CVE-2026-23003)

    io_uring: fix filename leak in __io_openat_prep()(CVE-2025-68814)

    RDMA/cm: Fix leaking the multicast GID table reference(CVE-2025-71084)

    net/sched: cls_u32: use skb_header_pointer_careful()(CVE-2026-23204)

    wifi: avoid kernel-infoleak from struct iw_point(CVE-2026-22978)

    scsi: qla2xxx: Validate sp before freeing associated memory(CVE-2025-71236)

    nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec(CVE-2026-23112)

    scsi: qla2xxx: Free sp in error path to fix system crash(CVE-2025-71232)

    ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr()(CVE-2025-71085)

    macvlan: fix possible UAF in macvlan_forward_source()(CVE-2026-23001)

    drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP(CVE-2023-54263)

    media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()(CVE-2025-68819)

    crypto: seqiv - Do not use req-iv after crypto_aead_encrypt(CVE-2025-71131)

    blk-mq: fix tags leak when shrink nr_hw_queues(CVE-2023-54227)

    net: usb: rtl8150: fix memory leak on usb_submit_urb() failure(CVE-2025-71154)

    ipv6: use RCU in ip6_output()(CVE-2025-40158)

    libceph: replace overzealous BUG_ON in osdmap_apply_incremental()(CVE-2026-22990)

    net: fix segmentation of forwarding fraglist GRO(CVE-2026-23154)

    sched/deadline: only set free_cpus for online runqueues(CVE-2025-68780)

    crypto: authencesn - reject too-short AAD (assoclen8) to match ESP/ESN spec(CVE-2026-23060)

    l2tp: avoid one data-race in l2tp_tunnel_del_work()(CVE-2026-23120)

    ipv4: Fix reference count leak when using error routes with nexthop objects(CVE-2025-71097)

    uacce: fix cdev handling in the cleanup path(CVE-2026-23096)

    pnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node()(CVE-2026-23038)

    KVM: Don't clobber irqfd routing type when deassigning irqfd(CVE-2026-23198)

    netdevsim: fix a race issue related to the operation on bpf_bound_progs list(CVE-2026-23126)

    RDMA/umad: Reject negative data_len in ib_umad_write(CVE-2026-23243)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization 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-2026:0617-1 advisory.

    The SUSE Linux Enterprise 15 SP4 kernel was updated to fix various security issues

    The following security issues were fixed:

    - CVE-2022-50630: mm: hugetlb: fix UAF in hugetlb_handle_userfault (bsc#1254785).
    - CVE-2022-50697: mrp: introduce active flags to prevent UAF when applicant uninit (bsc#1255594).
    - CVE-2022-50700: wifi: ath10k: Delay the unmapping of the buffer (bsc#1255576).
    - CVE-2023-53215: sched/fair: Don't balance task to its current running CPU (bsc#1250397).
    - CVE-2023-53254: cacheinfo: Fix shared_cpu_map to handle shared caches at different levels (bsc#1249871).
    - CVE-2023-53781: smc: Fix use-after-free in tcp_write_timer_handler() (bsc#1254751).
    - CVE-2023-54142: gtp: Fix use-after-free in __gtp_encap_destroy() (bsc#1256095).
    - CVE-2023-54243: netfilter: ebtables: fix table blob use-after-free (bsc#1255908).
    - CVE-2024-28956: x86/its: Enumerate Indirect Target Selection (ITS) bug (bsc#1242006).
    - CVE-2024-36348: x86/bugs: Add a Transient Scheduler Attacks mitigation (bsc#1238896).
    - CVE-2024-36349: x86/bugs: Add a Transient Scheduler Attacks mitigation (bsc#1238896).
    - CVE-2024-36350: x86/bugs: Add a Transient Scheduler Attacks mitigation (bsc#1238896).
    - CVE-2024-36357: x86/bugs: Add a Transient Scheduler Attacks mitigation (bsc#1238896).
    - CVE-2024-44987: ipv6: prevent UAF in ip6_send_skb() (bsc#1230185).
    - CVE-2024-46854: net: dpaa: Pad packets to ETH_ZLEN (bsc#1231084).
    - CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917).
    - CVE-2025-38068: crypto: lzo - Fix compression buffer overrun (bsc#1245210).
    - CVE-2025-38129: page_pool: fix inconsistency for page_pool_ring_lock() (bsc#1245723).
    - CVE-2025-38159: wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds (bsc#1245751).
    - CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size (bsc#1247177).
    - CVE-2025-39977: futex: Prevent use-after-free during requeue-PI (bsc#1252046).
    - CVE-2025-40019: crypto: essiv - Check ssize for decryption and in-place encryption (bsc#1252678).
    - CVE-2025-40139: net: ipv4: Consolidate ipv4_mtu and ip_dst_mtu_maybe_forward (bsc#1253409).
    - CVE-2025-40215: kABI: xfrm: delete x->tunnel as we delete x (bsc#1254959).
    - CVE-2025-40220: fuse: fix livelock in synchronous file put from fuseblk workers (bsc#1254520).
    - CVE-2025-40233: ocfs2: clear extent cache after moving/defragmenting extents (bsc#1254813).
    - CVE-2025-40257: mptcp: fix a race in mptcp_pm_del_add_timer() (bsc#1254842).
    - CVE-2025-40258: mptcp: fix race condition in mptcp_schedule_work() (bsc#1254843).
    - CVE-2025-40277: drm/vmwgfx: Validate command header size against (bsc#1254894).
    - CVE-2025-40280: tipc: Fix use-after-free in tipc_mon_reinit_self() (bsc#1254847).
    - CVE-2025-40300: Documentation/hw-vuln: Add VMSCAPE documentation (bsc#1247483).
    - CVE-2025-40331: sctp: Prevent TOCTOU out-of-bounds write (bsc#1254615).
    - CVE-2025-68183: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (bsc#1255251).
    - CVE-2025-68284: libceph: prevent potential out-of-bounds writes in handle_auth_session_key()     (bsc#1255377).
    - CVE-2025-68285: libceph: fix potential use-after-free in have_mon_and_osd_map() (bsc#1255401).
    - CVE-2025-68312: usbnet: Prevents free active kevent (bsc#1255171).
    - CVE-2025-68732: gpu: host1x: Fix race in syncpt alloc/free (bsc#1255688).
    - CVE-2025-68813: ipvs: fix ipv4 null-ptr-deref in route error path (bsc#1256641).
    - CVE-2025-71085: ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() (bsc#1256623).
    - CVE-2025-71089: iommu: disable SVA when CONFIG_X86 is set (bsc#1256612).
    - CVE-2025-71112: net: hns3: add VLAN id validation before using (bsc#1256726).
    - CVE-2025-71116: libceph: make decode_pool() more resilient against corrupted osdmaps (bsc#1256744).
    - CVE-2025-71120: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf     (bsc#1256779).
    - CVE-2026-22999: net/sched: sch_qfq: do not free existing class in qfq_change_class() (bsc#1257236).
    - CVE-2026-23001: macvlan: fix possible UAF in macvlan_forward_source() (bsc#1257232).
    - CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc (bsc#1257749).
    - CVE-2026-23089: ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() (bsc#1257790).

    The following non security issues were fixed:

    - net: hv_netvsc: reject RSS hash key programming without RX indirection table (bsc#1257473).
    - net: tcp: allow zero-window ACK update the window (bsc#1254767).
    - net: tcp: send zero-window ACK when no memory (bsc#1254767).
    - scsi: storvsc: Process unsupported MODE_SENSE_10 (bsc#1257296).
    - tcp: correct handling of extreme memory squeeze (bsc#1254767).
    - x86/CPU/AMD: Add ZenX generations flags (bsc#1238896).
    - x86/its: Fix crash during dynamic its initialization (bsc#1257771).
    - x86/modules: Set VM_FLUSH_RESET_PERMS in module_alloc() (bsc#1257771).
    - x86: make page fault handling disable interrupts properly (git-fixes).

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.

An update of the linux package has been released.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0317-1 advisory.

    The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues

    The following security issues were fixed:

    - CVE-2022-50630: mm: hugetlb: fix UAF in hugetlb_handle_userfault (bsc#1254785).
    - CVE-2022-50700: wifi: ath10k: Delay the unmapping of the buffer (bsc#1255576).
    - CVE-2023-53254: cacheinfo: Fix shared_cpu_map to handle shared caches at different levels (bsc#1249871).
    - CVE-2023-53781: smc: Fix use-after-free in tcp_write_timer_handler() (bsc#1254751).
    - CVE-2024-56590: Bluetooth: hci_core: Fix not checking skb length on hci_acldata_packet (bsc#1235038).
    - CVE-2025-39977: futex: Prevent use-after-free during requeue-PI (bsc#1252046).
    - CVE-2025-40019: crypto: essiv - Check ssize for decryption and in-place encryption (bsc#1252678).
    - CVE-2025-40139: smc: Use __sk_dst_get() and dst_dev_rcu() in in smc_clc_prfx_set() (bsc#1253409).
    - CVE-2025-40215: kABI: xfrm: delete x->tunnel as we delete x (bsc#1254959).
    - CVE-2025-40220: fuse: fix livelock in synchronous file put from fuseblk workers (bsc#1254520).
    - CVE-2025-40233: ocfs2: clear extent cache after moving/defragmenting extents (bsc#1254813).
    - CVE-2025-40258: mptcp: fix race condition in mptcp_schedule_work() (bsc#1254843).
    - CVE-2025-40277: drm/vmwgfx: Validate command header size against (bsc#1254894).
    - CVE-2025-40280: tipc: Fix use-after-free in tipc_mon_reinit_self() (bsc#1254847).
    - CVE-2025-40331: sctp: Prevent TOCTOU out-of-bounds write (bsc#1254615).
    - CVE-2025-68732: gpu: host1x: Fix race in syncpt alloc/free (bsc#1255688).

    The following non security issues were fixed:

    - ACPI/IORT: Fix memory leak in iort_rmr_alloc_sids() (git-fixes).
    - ACPI: PRM: Remove unnecessary strict handler address checks (git-fixes).
    - ACPI: property: Do not pass NULL handles to acpi_attach_data() (git-fixes).
    - ACPI: property: Fix buffer properties extraction for subnodes (git-fixes).
    - KVM: SVM: Fix TSC_AUX virtualization setup (git-fixes).
    - RDMA/cm: Rate limit destroy CM ID timeout error message (git-fixes).
    - RDMA/counter: Check CAP_NET_RAW check in user namespace for RDMA counters (git-fixes).
    - RDMA/hns: Fix the modification of max_send_sge (git-fixes).
    - RDMA/mlx5: Check CAP_NET_RAW in user namespace for anchor create (git-fixes).
    - RDMA/mlx5: Check CAP_NET_RAW in user namespace for devx create (git-fixes).
    - RDMA/mlx5: Check CAP_NET_RAW in user namespace for flow create (git-fixes).
    - RDMA/mlx5: Fix compilation warning when USER_ACCESS isn't set (git-fixes).
    - RDMA/nldev: Check CAP_NET_RAW in user namespace for QP modify (git-fixes).
    - RDMA/uverbs: Add empty rdma_uattrs_has_raw_cap() declaration (git-fixes).
    - RDMA/uverbs: Check CAP_NET_RAW in user namespace for QP create (git-fixes).
    - RDMA/uverbs: Check CAP_NET_RAW in user namespace for RAW QP create (git-fixes).
    - RDMA/uverbs: Check CAP_NET_RAW in user namespace for flow create (git-fixes).
    - arch/idle: Change arch_cpu_idle() behavior: always exit with IRQs disabled (git-fixes).
    - cpuidle/poll: Ensure IRQs stay disabled after cpuidle_state::enter() calls (git-fixes).
    - cpuidle: Move IRQ state validation (git-fixes).
    - cpuidle: haltpoll: Do not enable interrupts when entering idle (git-fixes).
    - dm: free table mempools if not used in __bind (git-fixes).
    - padata: Honor the caller's alignment in case of chunk_size 0 (bsc#1237563).
    - platform/x86/intel-uncore-freq: Fail module load when plat_info is NULL (git-fixes).
    - x86/bugs: Fix RSB clearing in indirect_branch_prediction_barrier() (git-fixes).
    - x86/bugs: Use SBPB in write_ibpb() if applicable (git-fixes).
    - x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT (git-fixes).
    - x86/tdx: Drop flags from __tdx_hypercall() (git-fixes).
    - x86/tdx: Dynamically disable SEPT violations from causing #VEs (git-fixes).
    - x86/tdx: Emit warning if IRQs are enabled during HLT #VE handling (git-fixes).
    - x86/tdx: Extend TDX_MODULE_CALL to support more TDCALL/SEAMCALL leafs (git-fixes).
    - x86/tdx: Fix __noreturn build warning around __tdx_hypercall_failed() (git-fixes).
    - x86/tdx: Fix arch_safe_halt() execution for TDX VMs (git-fixes).
    - x86/tdx: Introduce wrappers to read and write TD metadata (git-fixes).
    - x86/tdx: Make TDX_HYPERCALL asm similar to TDX_MODULE_CALL (git-fixes).
    - x86/tdx: Make macros of TDCALLs consistent with the spec (git-fixes).
    - x86/tdx: Pass TDCALL/SEAMCALL input/output registers via a structure (git-fixes).
    - x86/tdx: Reimplement __tdx_hypercall() using TDX_MODULE_CALL asm (git-fixes).
    - x86/tdx: Remove 'struct tdx_hypercall_args' (git-fixes).
    - x86/tdx: Remove TDX_HCALL_ISSUE_STI (git-fixes).
    - x86/tdx: Rename __tdx_module_call() to __tdcall() (git-fixes).
    - x86/tdx: Rename tdx_parse_tdinfo() to tdx_setup() (git-fixes).
    - x86/tdx: Retry partially-completed page conversion hypercalls (git-fixes).
    - x86/tdx: Skip saving output regs when SEAMCALL fails with VMFailInvalid (git-fixes).
    - x86/tdx: Zero out the missing RSI in TDX_HYPERCALL macro (git-fixes).
    - x86/virt/tdx: Make TDX_MODULE_CALL handle SEAMCALL #UD and #GP (git-fixes).
    - x86/virt/tdx: Wire up basic SEAMCALL functions (git-fixes).
    - xfs: fix sparse inode limits on runt AG (bsc#1254392).

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 SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0316-1 advisory.

    The SUSE Linux Enterprise 12 SP5 kernel was updated to fix various security issues

    The following security issues were fixed:

    - CVE-2022-49604,CVE-2025-40074: ip: Fix data-races around sysctl_ip_fwd_use_pmtu (bsc#1238414     bsc#1252794).
    - CVE-2022-50527: drm/amdgpu: Fix size validation for non-exclusive domains (v4) (bsc#1251738).
    - CVE-2022-50625: serial: amba-pl011: avoid SBSA UART accessing DMACR register (bsc#1254559).
    - CVE-2022-50630: mm: hugetlb: fix UAF in hugetlb_handle_userfault (bsc#1254785).
    - CVE-2022-50656: nfc: pn533: Clear nfc_target before being used (bsc#1254745).
    - CVE-2022-50678: wifi: brcmfmac: fix invalid address access when enabling SCAN log level (bsc#1254902).
    - CVE-2022-50700: wifi: ath10k: Delay the unmapping of the buffer (bsc#1255576).
    - CVE-2023-53454: HID: multitouch: Correct devm device reference for hidinput input_dev name     (bsc#1250759).
    - CVE-2023-53718: ring-buffer: Do not swap cpu_buffer during resize process (bsc#1252564).
    - CVE-2023-53748: media: mediatek: vcodec: Fix potential array out-of-bounds in decoder queue_setup     (bsc#1254907).
    - CVE-2023-53765: dm cache: free background tracker's queued work in btracker_destroy (bsc#1254912).
    - CVE-2023-53781: smc: Fix use-after-free in tcp_write_timer_handler() (bsc#1254751).
    - CVE-2023-53788: ALSA: hda/ca0132: fixup buffer overrun at tuning_ctl_set() (bsc#1254917).
    - CVE-2023-53819: amdgpu: validate offset_in_bo of drm_amdgpu_gem_va (bsc#1254712).
    - CVE-2023-53850: iavf: use internal state to free traffic IRQs (bsc#1254677).
    - CVE-2023-54120: Bluetooth: Fix race condition in hidp_session_thread (bsc#1256133).
    - CVE-2023-54214: Bluetooth: L2CAP: Fix potential user-after-free (bsc#1255954).
    - CVE-2023-54236: net/net_failover: fix txq exceeding warning (bsc#1255922).
    - CVE-2023-54286: wifi: iwlwifi: dvm: Fix memcpy: detected field-spanning write backtrace (bsc#1255803).
    - CVE-2023-54300: wifi: ath9k: avoid referencing uninit memory in ath9k_wmi_ctrl_rx (bsc#1255790).
    - CVE-2025-38085: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race (bsc#1245431 bsc#1245499).
    - CVE-2025-38336: ata: pata_via: Force PIO for ATAPI devices on VT6415/VT6330 (bsc#1246370).
    - CVE-2025-38728: smb3: fix for slab out of bounds on mount to ksmbd (bsc#1249256).
    - CVE-2025-40006: mm/hugetlb: fix folio is still mapped when deleted (bsc#1252342).
    - CVE-2025-40035: Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak     (bsc#1252866).
    - CVE-2025-40053: net: dlink: handle copy_thresh allocation failure (bsc#1252808).
    - CVE-2025-40064: smc: Fix use-after-free in __pnet_find_base_ndev() (bsc#1252845).
    - CVE-2025-40075: tcp_metrics: use dst_dev_net_rcu() (bsc#1252795).
    - CVE-2025-40081: perf: arm_spe: Prevent overflow in PERF_IDX2OFF() (bsc#1252776).
    - CVE-2025-40110: drm/vmwgfx: Fix a null-ptr access in the cursor snooper (bsc#1253275).
    - CVE-2025-40123: bpf: Enforce expected_attach_type for tailcall compatibility (bsc#1253365).
    - CVE-2025-40135: ipv6: use RCU in ip6_xmit() (bsc#1253342).
    - CVE-2025-40139: smc: Use __sk_dst_get() and dst_dev_rcu() in in smc_clc_prfx_set() (bsc#1253409).
    - CVE-2025-40149: tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock() (bsc#1253355).
    - CVE-2025-40153: mm: hugetlb: avoid soft lockup when mprotect to large memory area (bsc#1253408).
    - CVE-2025-40158: ipv6: use RCU in ip6_output() (bsc#1253402).
    - CVE-2025-40160: xen/events: Cleanup find_virq() return codes (bsc#1253400).
    - CVE-2025-40164: usbnet: Fix using smp_processor_id() in preemptible code warnings (bsc#1253407).
    - CVE-2025-40167: ext4: detect invalid INLINE_DATA + EXTENTS flag combination (bsc#1253458).
    - CVE-2025-40168: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match() (bsc#1253427).
    - CVE-2025-40170: net: use dst_dev_rcu() in sk_setup_caps() (bsc#1253413).
    - CVE-2025-40178: pid: Add a judgment for ns null in pid_nr_ns (bsc#1253463).
    - CVE-2025-40198: ext4: avoid potential buffer over-read in parse_apply_sb_mount_options() (bsc#1253453).
    - CVE-2025-40200: Squashfs: reject negative file sizes in squashfs_read_inode() (bsc#1253448).
    - CVE-2025-40215: kABI: xfrm: delete x->tunnel as we delete x (bsc#1254959).
    - CVE-2025-40219: PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV (bsc#1254518).
    - CVE-2025-40233: ocfs2: clear extent cache after moving/defragmenting extents (bsc#1254813).
    - CVE-2025-40240: sctp: avoid NULL dereference when chunk data buffer is missing (bsc#1254869).
    - CVE-2025-40244: hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent() (bsc#1255033).
    - CVE-2025-40248: vsock: Ignore signal/timeout on connect() if already established (bsc#1254864).
    - CVE-2025-40252: net: qlogic/qede: fix potential out-of-bounds read in qede_tpa_cont() and qede_tpa_end()     (bsc#1254849).
    - CVE-2025-40269: ALSA: usb-audio: Fix potential overflow of PCM transfer buffer (bsc#1255035).
    - CVE-2025-40275: ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd     (bsc#1254829).
    - CVE-2025-40278: net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak     (bsc#1254825).
    - CVE-2025-40279: net: sched: act_connmark: initialize struct tc_ife to fix kernel leak (bsc#1254846).
    - CVE-2025-40283: Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF (bsc#1254858).
    - CVE-2025-40304: fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds (bsc#1255034).
    - CVE-2025-40308: Bluetooth: bcsp: receive data only if registered (bsc#1255064).
    - CVE-2025-40321: wifi: brcmfmac: fix crash while sending Action Frames in standalone AP Mode     (bsc#1254795).
    - CVE-2025-40322: fbdev: bitblit: bound-check glyph index in bit_putcs* (bsc#1255092).
    - CVE-2025-40331: sctp: Prevent TOCTOU out-of-bounds write (bsc#1254615).
    - CVE-2025-40337: net: stmmac: Correctly handle Rx checksum offload errors (bsc#1255081).
    - CVE-2025-40349: hfs: validate record offset in hfsplus_bmap_alloc (bsc#1255280).
    - CVE-2025-40351: hfsplus: fix KMSAN uninit-value issue in hfsplus_delete_cat() (bsc#1255281).
    - CVE-2025-68206: netfilter: nft_ct: add seqadj extension for natted connections (bsc#1255142).
    - CVE-2025-68340: team: Move team device type change at the end of team_port_add (bsc#1255507).

    The following non security issues were fixed:

    - HID: multitouch: Add NULL check in mt_input_configured (bsc#1250759).
    - Squashfs: add additional inode sanity checking (bsc#1253448).
    - drm/amdgpu: Fix potential NULL dereference (bsc#1251238).

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.

  - blk-cgroup: Fix NULL deref caused by blkg_policy_data being installed before init blk-iocost sometimes     causes the following crash: BUG: kernel NULL pointer dereference, address: 00000000000000e0 ... RIP:
    0010:_raw_spin_lock+0x17/0x30 Code: be 01 02 00 00 e8 79 38 39 ff 31 d2 89 d0 5d c3 0f 1f 00 0f 1f 44 00     00 55 48 89 e5 65 ff 05 48 d0 34 7e b9 01 00 00 00 31 c0 <f0> 0f b1 0f 75 02 5d c3 89 c6 e8 ea 04 00 00 5d     c3 0f 1f 84 00 00 RSP: 0018:ffffc900023b3d40 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 00000000000000e0     RCX: 0000000000000001 RDX: ffffc900023b3d20 RSI: ffffc900023b3cf0 RDI: 00000000000000e0 RBP:
    ffffc900023b3d40 R08: ffffc900023b3c10 R09: 0000000000000003 R10: 0000000000000064 R11: 000000000000000a     R12: ffff888102337000 R13: fffffffffffffff2 R14: ffff88810af408c8 R15: ffff8881070c3600 FS:
    00007faaaf364fc0(0000) GS:ffff88842fdc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0:
    0000000080050033 CR2: 00000000000000e0 CR3: 00000001097b1000 CR4: 0000000000350ea0 Call Trace: <TASK>     ioc_weight_write+0x13d/0x410 cgroup_file_write+0x7a/0x130 kernfs_fop_write_iter+0xf5/0x170     vfs_write+0x298/0x370 ksys_write+0x5f/0xb0 __x64_sys_write+0x1b/0x20 do_syscall_64+0x3d/0x80     entry_SYSCALL_64_after_hwframe+0x46/0xb0 This happens because iocg->ioc is NULL. The field is initialized     by ioc_pd_init() and never cleared. The NULL deref is caused by blkcg_activate_policy() installing     blkg_policy_data before initializing it. blkcg_activate_policy() was doing the following: 1. Allocate pd's     for all existing blkg's and install them in blkg->pd[]. 2. Initialize all pd's. 3. Online all pd's.
    blkcg_activate_policy() only grabs the queue_lock and may release and re-acquire the lock as allocation     may need to sleep. ioc_weight_write() grabs blkcg->lock and iterates all its blkg's. The two can race and     if ioc_weight_write() runs during #1 or between #1 and #2, it can encounter a pd which is not initialized     yet, leading to crash. The crash can be reproduced with the following script: #!/bin/bash echo +io >     /sys/fs/cgroup/cgroup.subtree_control systemd-run --unit touch-sda --scope dd if=/dev/sda of=/dev/null     bs=1M count=1 iflag=direct echo 100 > /sys/fs/cgroup/system.slice/io.weight bash -c echo '8:0 enable=1' >     /sys/fs/cgroup/io.cost.qos & sleep .2 echo 100 > /sys/fs/cgroup/system.slice/io.weight with the following     patch applied: > diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c > index fc49be622e05..38d671d5e10c     100644 > --- a/block/blk-cgroup.c > +++ b/block/blk-cgroup.c > @@ -1553,6 +1553,12 @@ int     blkcg_activate_policy(struct gendisk *disk, const struct blkcg_policy *pol) > pd->online = false; > } > >     + if (system_state == SYSTEM_RUNNING) { > + spin_unlock_irq(&q->queue_lock); > + ssleep(1); > +     spin_lock_irq(&q->queue_lock); > + } > + > /* all allocated, init in the same order */ > if     (pol->pd_init_fn) > list_for_each_entry_reverse(blkg, &q->blkg_list, q_node) I don't see a reason why all     pd's should be allocated, initialized and onlined together. The only ordering requirement is that parent     blkgs to be initialized and onlined before children, which is guaranteed from the walking order. Let's fix     the bug by allocating, initializing and onlining pd for each blkg and holding blkcg->lock over     initialization and onlining. This ensures that an installed blkg is always fully initialized and onlined     removing the the race window. (CVE-2023-54271)

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

ID	Name	Product	Family	Severity
319448	EulerOS Virtualization 2.13.1 : kernel (EulerOS-SA-2026-2132)	Nessus	Huawei Local Security Checks	high
319348	EulerOS Virtualization 2.12.1 : kernel (EulerOS-SA-2026-2077)	Nessus	Huawei Local Security Checks	critical
319345	EulerOS Virtualization 2.12.0 : kernel (EulerOS-SA-2026-2102)	Nessus	Huawei Local Security Checks	critical
319325	EulerOS Virtualization 2.13.0 : kernel (EulerOS-SA-2026-2171)	Nessus	Huawei Local Security Checks	high
300092	SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0617-1)	Nessus	SuSE Local Security Checks	medium
298948	Photon OS 5.0: Linux PHSA-2026-5.0-0761	Nessus	PhotonOS Local Security Checks	medium
297194	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2026:0315-1)	Nessus	SuSE Local Security Checks	high
297191	SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0317-1)	Nessus	SuSE Local Security Checks	high
297090	SUSE SLES12 Security Update : kernel (SUSE-SU-2026:0316-1)	Nessus	SuSE Local Security Checks	high
296680	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2026:0293-1)	Nessus	SuSE Local Security Checks	high
296676	SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0281-1)	Nessus	SuSE Local Security Checks	high
296481	SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0278-1)	Nessus	SuSE Local Security Checks	high
280714	Linux Distros Unpatched Vulnerability : CVE-2023-54271	Nessus	Misc.	medium

Detections

Analytics

CVE-2023-54271

medium

Tenable Plugins

high

critical

critical

high

medium

medium

high

high

high

high

high

high

medium