Live › vulnerability › CVE-2023-0266
Go to dashboardThe Linux kernel has a use-after-free bug in its sound subsystem (ALSA compress/PCM ioctl path) that a local user can trigger. An attacker who already has a low-privilege account on the machine can escalate to full kernel (ring 0) control.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| debian linux | vendor | = 10.0 | – |
| linux kernel | vendor | >= 4.14, < 4.14.303 | 4.14.303 |
| linux kernel | vendor | >= 4.15, < 4.19.270 | 4.19.270 |
| linux kernel | vendor | >= 4.20, < 5.4.229 | 5.4.229 |
| linux kernel | vendor | >= 5.5, < 5.10.163 | 5.10.163 |
| linux kernel | vendor | >= 5.11, < 5.15.88 | 5.15.88 |
| linux kernel | vendor | >= 5.16, < 6.1.6 | 6.1.6 |
| Linux Kernel | vendor | – | – |
Unknown from the sources.
s vendor; CISAs KEV entry says Apply updates per vendor instructionsEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
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
This page as .md · .json · in your agent: get_signal("CVE-2023-0266")
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