CVE-2023-0266: Use after free in SNDRV_CTL_IOCTL_ELEM in Linux Kernel
High · CVSS 7.9 (CVSS 3.1)KEV known exploitedEPSS 3.7%, 90th percentilePublished Updated Assigner: Google
In CISA’s Known Exploited Vulnerabilities catalog: Linux Kernel Use-After-Free Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply updates per vendor instructions.
Description
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
Vector CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H · CWE-416
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Linux: Linux Kernel
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e (opens in new tab)
- github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1 (opens in new tab)
- git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa… (opens in new tab)
- lists.debian.org/debian-lts-announce/2023/05/msg00006.html (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)