Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Fixed packages 52

Vulnerabilities 5

• High 8.8
  CVE-2022-49910

  Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu

  In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu Fix the race condition between the following two flows that run in parallel: 1. l2cap_reassemble_sdu -> chan->ops->recv (l2…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 1, 2025
• High 7.8
  CVE-2022-4378

  A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters …

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu
  Jan 5, 2023
• Medium 5.5
  CVE-2022-3564 Public exploit

  Linux Kernel Bluetooth l2cap_core.c l2cap_reassemble_sdu use after free

  A vulnerability classified as critical was found in Linux Kernel. Affected by this vulnerability is the function l2cap_reassemble_sdu of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommende…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu
  Oct 17, 2022
• Unscored —
  CVE-2022-39188

  An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unma…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Sep 2, 2022
• Unscored —
  CVE-2022-42703 Public exploit

  mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Oct 9, 2022

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2130141
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2133483
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2150999
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2152548
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_3388.json
• report
  https://access.redhat.com/security/cve/CVE-2022-3564
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-3564
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-3564
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=89f9f3cb86b1c63badaf392a83dd661d56cc50b1
• report
  https://access.redhat.com/security/cve/CVE-2022-4378
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-4378
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-4378
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch
• article
  https://seclists.org/oss-sec/2022/q4/178
• report
  https://access.redhat.com/security/cve/CVE-2022-39188
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-39188
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-39188
• article
  https://bugs.chromium.org/p/project-zero/issues/detail?id=2329
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15
• article
  https://lore.kernel.org/stable/20220831191348.3388208-1-jannh@google.com/T/#u
• report
  https://access.redhat.com/security/cve/CVE-2022-42703
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-42703
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-42703
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542b
• report
  https://access.redhat.com/security/cve/CVE-2022-49910
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2363393
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-49910
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-49910
• article
  https://lore.kernel.org/linux-cve-announce/2025050104-CVE-2022-49910-96ae@gregkh/T