PT-2025-40087 · Linux+3 · Linux Kernel+3
Syzbot
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Published
2025-01-01
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Updated
2026-05-07
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CVE-2025-39913
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contained a flaw in the tcp bpf subsystem where
sk msg free() was not called when tcp bpf send verdict() failed to allocate memory for psock->cork. This could lead to memory allocation issues and potential system instability. The issue was identified through automated testing using syzbot, which reported a warning during a test execution involving a socket message program and fault injection. The root cause was a failure to revert a socket allocation change when the allocation of psock->cork failed, resulting in a potential memory leak and incorrect data handling during subsequent send operations.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Allocation of Resources Without Limits
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu