Issued:
2022-11-08
Updated:
2022-11-08

RHSA-2022:7444 - Moderate: kernel-rt security and bug fix update

Synopsis

Moderate: kernel-rt security and bug fix update

Type/Severity

Security Advisory Moderate

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)

  • Race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference (CVE-2020-36558)

  • use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)

  • Memory leak for large arguments in video_usercopy function in drivers/media/v4l2-core/v4l2-ioctl.c (CVE-2021-30002)

  • smb2_ioctl_query_info NULL Pointer Dereference (CVE-2022-0168)

  • NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)

  • swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)

  • Uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)

  • Race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)

  • use-after-free in tc_new_tfilter() in net/sched/cls_api.c (CVE-2022-1055)

  • use-after-free and memory errors in ext4 when mounting and operating on a corrupted image (CVE-2022-1184)

  • NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)

  • buffer overflow in nft_set_desc_concat_parse() (CVE-2022-2078)

  • nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)

  • openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)

  • use-after-free when psi trigger is destroyed while being polled (CVE-2022-2938)

  • net/packet: slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)

  • possible to use the debugger to write zero into a location of choice (CVE-2022-21499)

  • Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)

  • Memory leak in drivers/hid/hid-elo.c (CVE-2022-27950)

  • Double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)

  • Use after free in SUNRPC subsystem (CVE-2022-28893)

  • use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)

  • DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)

  • nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

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 8.7 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle8.10x86_64
Red Hat Enterprise Linux for Real Time8x86_64
Red Hat Enterprise Linux for Real Time for NFV8x86_64
Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service8.8x86_64
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service8.8x86_64

Updated Packages

  • kernel-rt-debug-debuginfo-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-debug-kvm-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-core-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-4.18.0-425.3.1.rt7.213.el8.src.rpm
  • kernel-rt-devel-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-debug-modules-extra-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-debug-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-modules-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-modules-extra-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-debug-core-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-debug-modules-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-debug-devel-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-kvm-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
  • kernel-rt-debuginfo-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm

Fixes

CVEs

References

Additional information