Red Hat Security Advisory: kernel-rt security update

Fixed packages 28

Vulnerabilities 4

• High 7.8
  CVE-2023-3609 Public exploit

  Use-after-free in Linux kernel's net/sched: cls_u32 component

  A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the refe…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 21, 2023
• High 7.8
  CVE-2023-3776 Public exploit

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

  A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the refere…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 21, 2023
• Medium 5.5
  CVE-2023-1637

  A flaw that boot CPU could be vulnerable for the speculative execution behavior kind of attacks in the Linux kernel X86…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu
  Mar 27, 2023
• Unscored —
  CVE-2023-4128 Public exploit Rejected

  ** REJECT ** DO NOT USE THIS CVE RECORD. ConsultIDs: CVE-2023-4206, CVE-2023-4207, CVE-2023-4208. Reason: This record i…

  linux-raspi2 linux-hwe linux-azure linux-riscv Ubuntu
  Aug 10, 2023

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2181891
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2225097
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2225201
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2225511
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_5794.json
• report
  https://access.redhat.com/security/cve/CVE-2023-1637
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-1637
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-1637
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e2a1256b17b16f9b9adf1b6fea56819e7b68e463
• article
  https://sourceware.org/bugzilla/show_bug.cgi?id=27398
• report
  https://access.redhat.com/security/cve/CVE-2023-3609
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-3609
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-3609
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc
• report
  https://access.redhat.com/security/cve/CVE-2023-3776
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-3776
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-3776
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f
• report
  https://access.redhat.com/security/cve/CVE-2023-4128
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2261965
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4128
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4128
• article
  https://access.redhat.com/security/cve/CVE-2023-4206
• article
  https://access.redhat.com/security/cve/CVE-2023-4207
• article
  https://access.redhat.com/security/cve/CVE-2023-4208