In the Linux kernel, the following vulnerability has been resolved: net: genl: fix error path memory leak in policy dumping If construction of the array of policies fails when recording non-first policy we need to unwind. netlink_policy_dump_add_policy() itself also needs fixing as it currently gives up on error without recording the allocated pointer in the pstate pointer.

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: net: genl: fix error path memory leak     in policy dumping If construction of the array of policies fails when recording non-first policy we need     to unwind. netlink_policy_dump_add_policy() itself also needs fixing as it currently gives up on error     without recording the allocated pointer in the pstate pointer. (CVE-2022-50042)

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-2023:6583 advisory.

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

    Security Fix(es):

    * kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)

    * kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and     cls_route (CVE-2023-4128, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208)

    * kernel: eBPF: insufficient stack type checks in dynptr (CVE-2023-39191)

    * Kernel: race when faulting a device private page in memory manager (CVE-2022-3523)

    * kernel: use-after-free in l1oip timer handlers (CVE-2022-3565)

    * kernel: Rate limit overflow messages in r8152 in intr_callback (CVE-2022-3594)

    * kernel: vmwgfx: use-after-free in vmw_cmd_res_check (CVE-2022-38457)

    * kernel: vmwgfx: use-after-free in vmw_execbuf_tie_context (CVE-2022-40133)

    * hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)

    * kernel: Information leak in l2cap_parse_conf_req in net/bluetooth/l2cap_core.c (CVE-2022-42895)

    * kernel: x86/mm: Randomize per-cpu entry area (CVE-2023-0597)

    * kernel: HID: check empty report_list in hid_validate_values() (CVE-2023-1073)

    * kernel: sctp: fail if no bound addresses can be used for a given scope (CVE-2023-1074)

    * kernel: hid: Use After Free in asus_remove() (CVE-2023-1079)

    * kernel: hash collisions in the IPv6 connection lookup table (CVE-2023-1206)

    * kernel: ovl: fix use after free in struct ovl_aio_req (CVE-2023-1252)

    * Kernel: use-after-free in nfsd4_ssc_setup_dul in fs/nfsd/nfs4proc.c (CVE-2023-1652)

    * kernel: Use after free bug in btsdio_remove due to race condition (CVE-2023-1989)

    * kernel: fbcon: shift-out-of-bounds in fbcon_set_font() (CVE-2023-3161)

    * kernel: out-of-bounds access in relay_file_read (CVE-2023-3268)

    * kernel: xfrm: NULL pointer dereference in xfrm_update_ae_params() (CVE-2023-3772)

    * kernel: xfrm: out-of-bounds read of XFRMA_MTIMER_THRESH nlattr (CVE-2023-3773)

    * kernel: KVM: SEV-ES / SEV-SNP VMGEXIT double fetch vulnerability (CVE-2023-4155)

    * kernel: exFAT: stack overflow in exfat_get_uniname_from_ext_entry (CVE-2023-4273)

    * kernel: mpls: double free on sysctl allocation failure (CVE-2023-26545)

    * kernel: KVM: nVMX: missing consistency checks for CR0 and CR4 (CVE-2023-30456)

    * kernel: net: qcom/emac: race condition leading to use-after-free in emac_remove() (CVE-2023-33203)

    * kernel: vmwgfx: race condition leading to information disclosure vulnerability (CVE-2023-33951)

    * kernel: vmwgfx: double free within the handling of vmw_buffer_object objects (CVE-2023-33952)

    * kernel: r592: race condition leading to use-after-free in r592_remove() (CVE-2023-35825)

    * kernel: net/tls: tls_is_tx_ready() checked list_entry (CVE-2023-1075)

    * kernel: tap: tap_open(): correctly initialize socket uid (CVE-2023-1076)

    * kernel: missing mmap_lock in file_files_note that could possibly lead to a use after free in the     coredump code (CVE-2023-1249)

    * kernel: use-after-free bug in remove function xgene_hwmon_remove (CVE-2023-1855)

    * kernel: Use after free bug in r592_remove (CVE-2023-3141)

    * kernel: gfs2: NULL pointer dereference in gfs2_evict_inode() (CVE-2023-3212)

    * kernel: NULL pointer dereference due to missing kalloc() return value check in     shtp_cl_get_dma_send_buf() (CVE-2023-3358)

    * kernel: tap: tap_open(): correctly initialize socket uid next fix of i_uid to current_fsuid     (CVE-2023-4194)

    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 9.3 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.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7370 advisory.

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

    Security Fix(es):

    * kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags (CVE-2023-3812)

    * kernel: net/sched: multiple vulnerabilities (CVE-2023-3609, CVE-2023-4128, CVE-2023-4206, CVE-2023-4207,     CVE-2023-4208)

    * kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)

    * kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)

    * kernel: AMD: Cross-Thread Return Address Predictions (CVE-2022-27672)

    * hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)

    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.

    Bug Fix(es):

    * RHEL9.0.z - kdump service failed to start when 32TB lpar is activated with desired_memory 100gb and max     memory 32TB. (BZ#2192539)

    * RHEL 9.0 - system hang during 6th EEH (BZ#2192561)

    * RHEL9.0 - kernel: fix __clear_user() inline assembly constraints (BZ#2192599)

    * LPAR is crashed by Phyp when doing DLPAR CPU operations (BZ#2193372)

    * RHEL 9.2 - Wrong numa_node is assigned to vpmem device (BZ#2212450)

    * Rhel9.2 - drmgr command  is failing (BZ#2213789)

    * [Intel 9.2] IOMMU: QAT Device Address Translation Issue with Invalidation Completion Ordering     (BZ#2221161)

    * [RHEL9.3] intel_pstate may provide incorrect scaling values for hybrid capable systems with E-cores     disabled (BZ#2221268)

    * [DELL SFSS] NVMe-TCP: kernel panic during connect/delete_controller tests (BZ#2227780)

    * LPM of RHEL client lpar got failed with error HSCLA2CF in 19th loops (BZ#2230270)

    * rbd: exclusive lock blocklisting and osd_request_timeout handling fixes (BZ#2231460)

    * openvswitch needs a stable hash in the kernel module (BZ#2232136)

    * [Intel 9.3] iavf: Driver Update (BZ#2232387)

    * [openvswitch] Add drop reasons to openvswitch (BZ#2233104)

    * [RHEL9] Percpu counter usage is gradually getting increasing during podman container recreation     (BZ#2233214)

    * enable conntrack clash resolution for GRE (BZ#2233799)

    * [Hyper-V][RHEL-9] hv_storvsc driver logging excessive storvsc_log events for storvsc_on_io_completion()     (BZ#2234834)

    * [e1000e] Intel 219-LM need to disable TSO to increase the speed (BZ#2235668)

    * Update lpfc 14.2.0.12 for RHEL 9.3 Inbox with 6 bug fixes from 14.2.0.14 (BZ#2235785)

    * backport 'Revert softirq: Let ksoftirqd do its job' from upstream (BZ#2236415)

    * NAT sport clash in OCP causing 1 second TCP connection establishment delay (BZ#2236513)

    * RHEL9.2 RC build - LTP test via SLS suite fails with a crash after running for 19hrs (BZ#2236699)

    * Container CPU affinity not set properly on Openshift using RHEL 9.2 (BZ#2236859)

    * NFSv4.0 client hangs when server reboot while client had outstanding lock request to the server     (BZ#2237841)

    * VMs deployed with RT workloads getting interrupted - vmstat_update (BZ#2238026)

    * core: backports from upstream (BZ#2238027)

    * SCSI updates for RHEL 9.3 (BZ#2238410)

    * Regression of 3b8cc6298724 (blk-cgroup: Optimize blkcg_rstat_flush()) (BZ#2238721)

    * NOHZ_FULL, and CFS quota co-existance (BZ#2240227)

    * Kernel doesn't boot on AWS SEV-SNP enabled instances (BZ#2241202)

    * RHEL 9.2 crash issue when creating SR-IOV VFs from E810 in switchdev mode (BZ#2241879)

    Enhancement(s):

    * [Intel 9.3 FEAT] [EMR] power: Add EMR support to intel_rapl and intel_idle drivers (BZ#2230167,     BZ#2230168)

    * [Intel 9.3 FEAT] [EMR] power: intel-speed-select tool support for EMR (BZ#2230170)

    * [Intel 9.3 FEAT] [EMR] RAS: Add EDAC support for EMR (BZ#2230172)

    * [RHEL 9.3 FEAT] update turbostat to upstream 6.3 (BZ#2230174)

    * [Lenovo 9.3 FEAT] drivers/nvme - Update to the latest upstream (BZ#2231219)

    * [Intel 9.4 FEAT] [EMR] Support intel-uncore-frequency driver (BZ#2239450)

    * ice: Enable DPLL support (BZ#2242556)

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.

The version of kernel installed on the remote host is prior to 5.10.144-127.601. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-020 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    i2c: Fix a potential use after free

    Free the adap structure only after we are done using it.This patch just moves the put_device() down a bit     to avoid theuse after free.

    [wsa: added comment to the code, added Fixes tag] (CVE-2019-25162)

    In the Linux kernel, the following vulnerability has been resolved:

    tun: avoid double free in tun_free_netdev (CVE-2021-47082)

    A use-after-free flaw was found in the Linux kernel's Atheros wireless adapter driver in the way a user     forces the ath9k_htc_wait_for_target function to fail with some input messages. This flaw allows a local     user to crash or potentially escalate their privileges on the system. (CVE-2022-1679)

    A flaw was found in the Linux kernel's KVM when attempting to set a SynIC IRQ. This issue makes it     possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This     flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel     oops condition that results in a denial of service. (CVE-2022-2153)

    A use-after-free flaw was found in the Linux kernel's POSIX CPU timers functionality in the way a user     creates and then deletes the timer in the non-leader thread of the program. This flaw allows a local user     to crash or potentially escalate their privileges on the system. (CVE-2022-2585)

    It was discovered that a nft object or expression could reference a nft set on a different nft table,     leading to a use-after-free once that table was deleted. (CVE-2022-2586)

    A use-after-free flaw was found in route4_change in the net/sched/cls_route.c filter implementation in the     Linux kernel. This flaw allows a local user to crash the system and possibly lead to a local privilege     escalation problem. (CVE-2022-2588)

    Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow     an authorized user to potentially enable information disclosure via local access. (CVE-2022-26373)

    An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and     incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted     IRC with nf_conntrack_irc configured. (CVE-2022-2663)

    An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the     bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to     gain unauthorized access to data. (CVE-2022-2905)

    A race condition was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem)     when multiple calls to xfrm_probe_algs occurred simultaneously. This flaw could allow a local attacker to     potentially trigger an out-of-bounds write or leak kernel heap memory by performing an out-of-bounds read     and copying it into a socket. (CVE-2022-3028)

    A use-after-free flaw was found in io_uring in the Linux kernel. This flaw allows a local user to trigger     the issue if a signalfd or binder fd is polled with the io_uring poll due to a lack of io_uring POLLFREE     handling. (CVE-2022-3176)

    A vulnerability was found in Linux Kernel. It has been classified as critical. This affects the function     devlink_param_set/devlink_param_get of the file net/core/devlink.c of the component IPsec. The     manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier     VDB-211929 was assigned to this vulnerability. (CVE-2022-3625)

    An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race     condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale     TLB entries. This only occurs in situations with VM_PFNMAP VMAs. (CVE-2022-39188)

    An issue was discovered in net/netfilter/nf_tables_api.c in the Linux kernel before 5.19.6. A denial of     service can occur upon binding to an already bound chain. (CVE-2022-39190)

    A race condition in the Linux kernel's EFI capsule loader driver was found in the way it handled write and     flush operations on the device node of the EFI capsule. A local user could potentially use this flaw to     crash the system. (CVE-2022-40307)

    mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is     not held during a PUD move. (CVE-2022-41222)

    A double-free flaw was found in the Linux kernel's TUN/TAP device driver functionality in how a user     registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw     allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-4744)

    In the Linux kernel, the following vulnerability has been resolved:

    IB/core: Fix a nested dead lock as part of ODP flow (CVE-2022-48675)

    In the Linux kernel, the following vulnerability has been resolved:

    nvme-tcp: fix UAF when detecting digest errors (CVE-2022-48686)

    In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix out-of-bounds read when     setting HMAC data. The SRv6 layer allows defining HMAC data that can later be used to sign IPv6 Segment     Routing Headers. This configuration is realised via netlink through four attributes: SEG6_ATTR_HMACKEYID,     SEG6_ATTR_SECRET, SEG6_ATTR_SECRETLEN and SEG6_ATTR_ALGID. (CVE-2022-48687)

    In the Linux kernel, the following vulnerability has been resolved:

    i40e: Fix kernel crash during module removal (CVE-2022-48688)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nf_tables: clean up hook list when offload flags check fails (CVE-2022-48691)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: mpt3sas: Fix use-after-free warning (CVE-2022-48695)

    In the Linux kernel, the following vulnerability has been resolved:

    nvmet: fix a use-after-free (CVE-2022-48697)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/radeon: add a force flush to delay work when radeon (CVE-2022-48704)

    In the Linux kernel, the following vulnerability has been resolved:

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

    In the Linux kernel, the following vulnerability has been resolved:

    USB: core: Prevent nested device-reset calls (CVE-2022-49936)

    In the Linux kernel, the following vulnerability has been resolved:

    vt: Clear selection before changing the font (CVE-2022-49948)

    In the Linux kernel, the following vulnerability has been resolved:

    net/sched: fix netdevice reference leaks in attach_default_qdiscs() (CVE-2022-49958)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level (CVE-2022-49964)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Don't redirect packets with invalid pkt_len (CVE-2022-49975)

    In the Linux kernel, the following vulnerability has been resolved:

    ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead (CVE-2022-49977)

    In the Linux kernel, the following vulnerability has been resolved:

    net: fix refcount bug in sk_psock_get (2) (CVE-2022-49979)

    In the Linux kernel, the following vulnerability has been resolved:

    HID: hidraw: fix memory leak in hidraw_release() (CVE-2022-49981)

    In the Linux kernel, the following vulnerability has been resolved:

    HID: steam: Prevent NULL pointer dereference in steam_{recv,send}_report (CVE-2022-49984)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Don't use tnum_range on array range checking for poke descriptors (CVE-2022-49985)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq (CVE-2022-49986)

    In the Linux kernel, the following vulnerability has been resolved:

    md: call __md_stop_writes in md_stop (CVE-2022-49987)

    In the Linux kernel, the following vulnerability has been resolved:

    xen/privcmd: fix error exit of privcmd_ioctl_dm_op() (CVE-2022-49989)

    In the Linux kernel, the following vulnerability has been resolved:

    loop: Check for overflow while configuring loop (CVE-2022-49993)

    In the Linux kernel, the following vulnerability has been resolved:

    rxrpc: Fix locking in rxrpc's sendmsg (CVE-2022-49998)

    In the Linux kernel, the following vulnerability has been resolved:

    xfrm: policy: fix metadata dst->dev xmit null pointer dereference (CVE-2022-50004)

    In the Linux kernel, the following vulnerability has been resolved:

    NFSv4.2 fix problems with __nfs42_ssc_open (CVE-2022-50006)

    In the Linux kernel, the following vulnerability has been resolved:

    xfrm: fix refcount leak in __xfrm_policy_check() (CVE-2022-50007)

    In the Linux kernel, the following vulnerability has been resolved:

    kprobes: don't call disarm_kprobe() for disabled kprobes (CVE-2022-50008)

    In the Linux kernel, the following vulnerability has been resolved:

    drivers:md:fix a potential use-after-free bug (CVE-2022-50022)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: lpfc: Prevent buffer overflow crashes in debugfs with malformed user input (CVE-2022-50030)

    In the Linux kernel, the following vulnerability has been resolved:

    net: genl: fix error path memory leak in policy dumping (CVE-2022-50042)

    In the Linux kernel, the following vulnerability has been resolved:

    iavf: Fix adminq error handling (CVE-2022-50055)

    In the Linux kernel, the following vulnerability has been resolved:

    ceph: don't leak snap_rwsem in handle_cap_grant (CVE-2022-50059)

    In the Linux kernel, the following vulnerability has been resolved:

    virtio_net: fix memory leak inside XPD_TX with mergeable (CVE-2022-50065)

    In the Linux kernel, the following vulnerability has been resolved:

    NFSv4/pnfs: Fix a use-after-free bug in open (CVE-2022-50072)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix warning in ext4_iomap_begin as race between bmap and write (CVE-2022-50082)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h (CVE-2022-50083)

    In the Linux kernel, the following vulnerability has been resolved:

    dm raid: fix address sanitizer warning in raid_status (CVE-2022-50084)

    In the Linux kernel, the following vulnerability has been resolved:

    dm raid: fix address sanitizer warning in raid_resume (CVE-2022-50085)

    In the Linux kernel, the following vulnerability has been resolved:

    firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails (CVE-2022-50087)

    In the Linux kernel, the following vulnerability has been resolved:

    dm thin: fix use-after-free crash in dm_sm_register_threshold_callback (CVE-2022-50092)

    In the Linux kernel, the following vulnerability has been resolved:

    iommu/vt-d: avoid invalid memory access via node_online(NUMA_NO_NODE) (CVE-2022-50093)

    In the Linux kernel, the following vulnerability has been resolved:

    posix-cpu-timers: Cleanup CPU timers before freeing them during exec (CVE-2022-50095)

    In the Linux kernel, the following vulnerability has been resolved:

    video: fbdev: s3fb: Check the size of screen before memset_io() (CVE-2022-50097)

    In the Linux kernel, the following vulnerability has been resolved:

    sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed (CVE-2022-50103)

    In the Linux kernel, the following vulnerability has been resolved:

    jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted (CVE-2022-50126)

    In the Linux kernel, the following vulnerability has been resolved:

    RDMA/rxe: Fix error unwind in rxe_create_qp() (CVE-2022-50127)

    In the Linux kernel, the following vulnerability has been resolved:

    RDMA/srpt: Fix a use-after-free (CVE-2022-50129)

    In the Linux kernel, the following vulnerability has been resolved:

    RDMA/qedr: Fix potential memory leak in __qedr_alloc_mr() (CVE-2022-50138)

    In the Linux kernel, the following vulnerability has been resolved:

    driver core: fix potential deadlock in __driver_attach (CVE-2022-50149)

    In the Linux kernel, the following vulnerability has been resolved:

    usb: host: Fix refcount leak in ehci_hcd_ppc_of_probe (CVE-2022-50153)

    In the Linux kernel, the following vulnerability has been resolved:

    virtio-gpu: fix a missing check to avoid NULL dereference (CVE-2022-50181)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() (CVE-2022-50185)

    In the Linux kernel, the following vulnerability has been resolved:

    regulator: of: Fix refcount leak bug in of_get_regulation_constraints() (CVE-2022-50191)

    In the Linux kernel, the following vulnerability has been resolved:

    selinux: Add boundary check in put_entry() (CVE-2022-50200)

    In the Linux kernel, the following vulnerability has been resolved:

    PM: hibernate: defer device probing when resuming from hibernation (CVE-2022-50202)

    In the Linux kernel, the following vulnerability has been resolved:

    ext2: Add more validity checks for inode counts (CVE-2022-50205)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64: fix oops in concurrently setting insn_emulation sysctls (CVE-2022-50206)

    In the Linux kernel, the following vulnerability has been resolved:

    md-raid10: fix KASAN warning (CVE-2022-50211)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nf_tables: do not allow CHAIN_ID to refer to another table (CVE-2022-50212)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nf_tables: do not allow SET_ID to refer to another table (CVE-2022-50213)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: sg: Allow waiting for commands to complete on removed device (CVE-2022-50215)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix KASAN use-after-free Read in compute_effective_progs (CVE-2022-50219)

    In the Linux kernel, the following vulnerability has been resolved:

    usbnet: Fix linkwatch use-after-free on disconnect (CVE-2022-50220)

    In the Linux kernel, the following vulnerability has been resolved:

    tty: vt: initialize unicode screen buffer (CVE-2022-50222)

    In the Linux kernel, the following vulnerability has been resolved:

    KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 (CVE-2022-50228)

    In the Linux kernel, the following vulnerability has been resolved:

    crypto: arm64/poly1305 - fix a read out-of-bound (CVE-2022-50231)

    In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the     transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list
    -- the list head is all zeroes, this results in a NULL pointer dereference. (CVE-2023-1095)

    The upstream advisory describes this issue as follows:

    This vulnerability allows local attackers to disclose sensitive information on affected installations of     the Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target     system in order to exploit this vulnerability.

    The specific flaw exists within the processing of seg6 attributes. The issue results from the lack of     proper validation of user-supplied data, which can result in a read past the end of an allocated buffer.
    An attacker can leverage this in conjunction with other vulnerabilties to escalate privileges and execute     arbitrary code in the context of the kernel. (CVE-2023-2860)

Tenable has extracted the preceding description block directly from the tested product 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:4356 advisory.

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

    Security Fix(es):
    * kernel: out-of-bounds reads in pinctrl subsystem (CVE-2020-0427)
    * kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24502)
    * kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24503)
    * kernel: Uncontrolled resource consumption in some Intel(R) Ethernet E810 Adapter drivers     (CVE-2020-24504)
    * kernel: Fragmentation cache not cleared on reconnection (CVE-2020-24586)
    * kernel: Reassembling fragments encrypted under different keys (CVE-2020-24587)
    * kernel: wifi frame payload being parsed incorrectly as an L2 frame (CVE-2020-24588)
    * kernel: Forwarding EAPOL from unauthenticated wifi client (CVE-2020-26139)
    * kernel: accepting plaintext data frames in protected networks (CVE-2020-26140)
    * kernel: not verifying TKIP MIC of fragmented frames (CVE-2020-26141)
    * kernel: accepting fragmented plaintext frames in protected networks (CVE-2020-26143)
    * kernel: accepting unencrypted A-MSDU frames that start with RFC1042 header (CVE-2020-26144)
    * kernel: accepting plaintext broadcast fragments as full frames (CVE-2020-26145)
    * kernel: powerpc: RTAS calls can be used to compromise kernel integrity (CVE-2020-27777)
    * kernel: locking inconsistency in tty_io.c and tty_jobctrl.c can lead to a read-after-free     (CVE-2020-29660)
    * kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function via a long SSID value     (CVE-2020-36158)
    * kernel: slab out-of-bounds read in hci_extended_inquiry_result_evt()  (CVE-2020-36386)
    * kernel: Improper access control in BlueZ may allow information disclosure vulnerability. (CVE-2021-0129)
    * kernel: Use-after-free in ndb_queue_rq() in drivers/block/nbd.c (CVE-2021-3348)
    * kernel: Linux kernel eBPF RINGBUF map oversized allocation (CVE-2021-3489)
    * kernel: double free in bluetooth subsystem when the HCI device initialization fails (CVE-2021-3564)
    * kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573)
    * kernel: eBPF 32-bit source register truncation on div/mod (CVE-2021-3600)
    * kernel: DoS in rb_per_cpu_empty() (CVE-2021-3679)
    * kernel: Mounting overlayfs inside an unprivileged user namespace can reveal files (CVE-2021-3732)
    * kernel: heap overflow in __cgroup_bpf_run_filter_getsockopt() (CVE-2021-20194)
    * kernel: Race condition in sctp_destroy_sock list_del (CVE-2021-23133)
    * kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode     (CVE-2021-28950)
    * kernel: System crash in intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c (CVE-2021-28971)
    * kernel: protection can be bypassed to leak content of kernel memory (CVE-2021-29155)
    * kernel: improper input validation in tipc_nl_retrieve_key function in net/tipc/node.c (CVE-2021-29646)
    * kernel: lack a full memory barrier may lead to DoS (CVE-2021-29650)
    * kernel: local escalation of privileges in handling of eBPF programs (CVE-2021-31440)
    * kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak     content of kernel memory (CVE-2021-31829)
    * kernel: out-of-bounds reads and writes due to enforcing incorrect limits for pointer arithmetic     operations by BPF verifier (CVE-2021-33200)
    * kernel: reassembling encrypted fragments with non-consecutive packet numbers (CVE-2020-26146)
    * kernel: reassembling mixed encrypted/plaintext fragments (CVE-2020-26147)
    * kernel: the copy-on-write implementation can grant unintended write access because of a race condition     in a THP mapcount check (CVE-2020-29368)
    * kernel: flowtable list del corruption with kernel BUG at lib/list_debug.c:50 (CVE-2021-3635)
    * kernel: NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c (CVE-2021-3659)
    * kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure (CVE-2021-20239)
    * kernel: out of bounds array access in drivers/md/dm-ioctl.c (CVE-2021-31916)

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
246687	Linux Distros Unpatched Vulnerability : CVE-2022-50042	Nessus	Misc.	medium
194262	RHEL 9 : kernel (RHSA-2023:6583)	Nessus	Red Hat Local Security Checks	high
186041	RHEL 9 : kernel (RHSA-2023:7370)	Nessus	Red Hat Local Security Checks	high
166124	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-020 (ALASKERNEL-5.10-2022-020)	Nessus	Amazon Linux Local Security Checks	high
166118	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2022-008 (ALASKERNEL-5.15-2022-008)	Nessus	Amazon Linux Local Security Checks	high
155219	RHEL 8 : kernel (RHSA-2021:4356)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2022-50042

medium

Tenable Plugins

medium

high

high

high

high

high