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CVE-2023-0266Use 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. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e
7.9 HIGHEPSS 3.70%⚡ Known Exploited (CISA KEV)NVD: Published
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 7.9 | HIGH | 3.1Google (CNA) | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H |
Details
- CVE ID
- CVE-2023-0266
- Status
- Published
- Assigner (CNA)
- Published
- Jan 30, 2023
- Last modified
- 2025-10-21 23:15 UTC
- Weaknesses
- CWE-416 · Use After Free
Affected Products
As published by the CNA in the CVE record.
LinuxLinux Kernel1 version range
- 4.14 before 56b88b50565cd8b946a2d00b0c83927b7ebb055e
References
- github.com https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1
- git.kernel.org 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
- github.com https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e
- lists.debian.org https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
Sources
- NVD (unavailable at last refresh)
- CVE.org
- CISA KEV
- FIRST EPSS