PoC Index

CVE-2023-0266

KEVHIGH 7.9EPSS 3.7%

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 v3.1
7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
7.9 HIGHCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H
EPSS
3.70% chance of exploitation in the next 30 days, 89th percentile
CISA KEV
added 2023-03-30
Published
2023-01-30
Updated
2025-10-21

Proof-of-concept exploits (1)

References

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