CVE-2025-71084None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: RDMA/cm: Fix leaking the multicast GID table reference If the CM ID is destroyed while the CM event for multicast creating is still queued the cancel_work_sync() will …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
RDMA/cm: Fix leaking the multicast GID table reference
If the CM ID is destroyed while the CM event for multicast creating is still queued the cancel_work_sync() will prevent the work from running which also prevents destroying the ah_attr. This leaks a refcount and triggers a WARN:
GID entry ref leak for dev syz1 index 2 ref=573 WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline] WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886
Destroy the ah_attr after canceling the work, it is safe to call this twice.
Linux >= 60d613b39e8d0c9f3b526e9c96445422b4562d76 < d5ce588a9552878859a4d44b70b724216c188a5fLinux >= fe454dc31e84f8c14cb8942fcb61666c9f40745b < abf38398724ecc888f62c678d288da40d11878afLinux >= fe454dc31e84f8c14cb8942fcb61666c9f40745b < ab668a58c4a2ccb6d54add7a76f2f955d15d0196Linux >= fe454dc31e84f8c14cb8942fcb61666c9f40745b < c0acdee513239e1d6e1b490f56be0e6837dfd162Linux >= fe454dc31e84f8c14cb8942fcb61666c9f40745b < 5cb34bb5fd726491b809efbeb5cfd63ae5bf9cf3Linux >= fe454dc31e84f8c14cb8942fcb61666c9f40745b < 3ba6d01c4b3c584264dc733c6a2ecc5bbc8e0bb5Linux >= fe454dc31e84f8c14cb8942fcb61666c9f40745b < 57f3cb6c84159d12ba343574df2115fb18dd83caLinux a3262b3884dd67b4c5632ce7cdf9cff9d1a575d4Linux >= 5.10.20 < 5.10.248Linux >= 5.11.3 < 5.12Linux 5.12Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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