Red Hat Security Advisory: kernel security and bug fix update

Fixed packages 72

Vulnerabilities 6

• High 7.8
  CVE-2024-1086 Exploited · Ransomware Public exploit EPSS 28%

  Use-after-free in Linux kernel's netfilter: nf_tables component

  A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slo…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jan 31, 2024

  KEV May 30, 2024
• High 8.0
  CVE-2022-42896 Public exploit

  Info Leak in l2cap_core in the Linux Kernel

  There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker coul…

  Linux linux_kernel linux-raspi2 linux-hwe Linux Debian Ubuntu
  Nov 23, 2022
• High 7.8
  CVE-2023-4921

  Use-after-free in Linux kernel's net/sched: sch_qfq component

  A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfq_dequeue()…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 12, 2023
• Unscored —
  CVE-2023-38409

  An issue was discovered in set_con2fb_map in drivers/video/fbdev/core/fbcon.c in the Linux kernel before 6.2.12. Becaus…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Jul 17, 2023
• Unscored —
  CVE-2023-45871

  An issue was discovered in drivers/net/ethernet/intel/igb/igb_main.c in the IGB driver in the Linux kernel before 6.5.3…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Oct 15, 2023
• Unscored —
  CVE-2024-26602

  sched/membarrier: reduce the ability to hammer on sys_membarrier

  In the Linux kernel, the following vulnerability has been resolved: sched/membarrier: reduce the ability to hammer on sys_membarrier On some systems, sys_membarrier can be very expensive, causing overall slowdowns for everything. So put a lock on the path in …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Feb 24, 2024

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2147364
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2230042
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2244723
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2245514
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2262126
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2267695
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_1249.json
• report
  https://access.redhat.com/security/cve/CVE-2022-42896
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-42896
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-42896
• article
  https://github.com/google/security-research/security/advisories/GHSA-pf87-6c9q-jvm4
• report
  https://access.redhat.com/security/cve/CVE-2023-4921
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4921
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4921
• article
  https://github.com/torvalds/linux/commit/8fc134fee27f2263988ae38920bc03da416b03d8
• report
  https://access.redhat.com/security/cve/CVE-2023-38409
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-38409
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-38409
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=fffb0b52d5258554c645c966c6cbef7de50b851d
• report
  https://access.redhat.com/security/cve/CVE-2023-45871
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-45871
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-45871
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bb5ed01cd2428cd25b1c88a3a9cba87055eb289f
• report
  https://access.redhat.com/security/cve/CVE-2024-1086
• advisory
  https://www.cve.org/CVERecord?id=CVE-2024-1086
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2024-1086
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660
• article
  https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660
• article
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• report
  https://access.redhat.com/security/cve/CVE-2024-26602
• advisory
  https://www.cve.org/CVERecord?id=CVE-2024-26602
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2024-26602
• article
  https://github.com/torvalds/linux/commit/944d5fe50f3f03daacfea16300e656a1691c4a23
• article
  https://lore.kernel.org/linux-cve-announce/2024022414-CVE-2024-26602-5e76@gregkh/