Red Hat Security Advisory: kernel-rt security and bug fix update

Fixed packages 28

Vulnerabilities 3

• High 7.9
  CVE-2023-0266 Exploited Public exploit

  Use after free in SNDRV_CTL_IOCTL_ELEM in Linux Kernel

  A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. …

  Linux linux_kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jan 30, 2023

  KEV Mar 30, 2023
• High 7.8
  CVE-2022-4744

  A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the devi…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu
  Mar 30, 2023
• Medium 5.5
  CVE-2022-4269

  A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirec…

  linux-raspi2 linux-hwe linux-azure linux-riscv Linux Debian Ubuntu
  Dec 5, 2022

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2150272
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2156322
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2163379
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_1469.json
• report
  https://access.redhat.com/security/cve/CVE-2022-4269
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-4269
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-4269
• report
  https://access.redhat.com/security/cve/CVE-2022-4744
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-4744
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-4744
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e
• report
  https://access.redhat.com/security/cve/CVE-2023-0266
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-0266
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-0266
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=56b88b50565cd8b946a2d00b0c83927b7ebb055e
• article
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog