Vulnerability DatabaseCVE-2023-0266
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CVE-2023-0266
January 30, 2023
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
Related Resources (8)
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://security-tracker.debian.org/tracker/CVE-2023-0266
https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1
https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
https://access.redhat.com/security/cve/CVE-2023-0266
https://people.canonical.com/~ubuntu-security/cve/CVE-2023-0266
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0266
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CVSS v4
Base Score:
7.3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
LOW
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
Exploit Maturity
ATTACKED
CVSS v3
Base Score:
7.9
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
HIGH
Exploit Maturity
HIGH
Weakness Type (CWE)
Use After Free
CWE-416
EPSS
Base Score:
0.08