CVE-2023-0266

Linux Kernel Use-After-Free Vulnerability

Debian Linux

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. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e

30. Jan 2023

Ausgewertete Quellen

• Debian
  https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• Hersteller
  https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca8…
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0266
• CISA
  Linux Kernel Use-After-Free Vulnerability
• NVD
  CVE-2023-0266