high7.9Known exploited
CVE-2023-0266
Linux Kernel Use-After-Free Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2023-03-30. Federal due date: 2023-04-20.
Apply updates per vendor instructions.
Impact
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
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Debian | Debian Linux | Version 10.0 |
| Linux | Linux Kernel | from 4.14 before 4.14.303 from 4.15 before 4.19.270 from 4.20 before 5.4.229 from 5.5 before 5.10.163 from 5.11 before 5.15.88 from 5.16 before 6.1.6 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- 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=72783cf35e6c55bca84c4bb7b776c58152856fd4
- https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e
- https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- 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=72783cf35e6c55bca84c4bb7b776c58152856fd4
- https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e
- https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0266