The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them. Some error paths would free those messages, leaving freed data mbufs in the receive socket buffer.
An unprivileged local user can exploit this use-after-free to escalate privileges.
An unprivileged local user can exploit this use-after-free to escalate privileges.
Metrics
Affected Vendors & Products
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Fixes
Solution
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Workaround
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References
History
Wed, 26 Aug 2026 04:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them. Some error paths would free those messages, leaving freed data mbufs in the receive socket buffer. An unprivileged local user can exploit this use-after-free to escalate privileges. | |
| Title | Use-after-free in unix SOCK_STREAM message handling | |
| Weaknesses | CWE-416 | |
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: freebsd
Published:
Updated: 2026-08-26T04:35:10.739Z
Reserved: 2026-06-29T01:40:17.498Z
Link: CVE-2026-58090
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses