Vulnerability detail
Enriched intelligence for a single CVE
High
CVE-2023-0266
PUBLISHEDUse after free in SNDRV_CTL_IOCTL_ELEM in Linux Kernel
- Vendor
- Linux
- Product
- Linux Kernel
- Published
- Jan 30, 2023
- EPSS
- —
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
CVSS scores
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H
Exploitation status
Exploited in the wild
Recorded 2023-03-30 00:00:00 UTC · Source
SSVC decision points
- Exploitation
- active
- Automatable
- No
- Technical impact
- total
References
- https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1
- 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://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
Known exploited vulnerability sources
Catalogues that list this CVE as a known exploited vulnerability.
| Source | Added |
|---|---|
| CISA | Mar 30, 2023 |
Scanner integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nessus | https://www.tenable.com/plugins/nessus/236642 | Jun 02, 2025 |
Timeline
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CVE ID Reserved
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CVE Published to Public
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Added to KEVIntel
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Detected by Nessus