CVE-2026-45964
SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
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Description
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path Commit 5940d1cf9f42 ("SUNRPC: Rebalance a kref in auth_gss.c") added a kref_get(&gss_auth->kref) call to balance the gss_put_auth() done in gss_release_msg(), but forgot to add a corresponding kref_put() on the error path when kstrdup_const() fails. If service_name is non-NULL and kstrdup_const() fails, the function jumps to err_put_pipe_version which calls put_pipe_version() and kfree(gss_msg), but never releases the gss_auth reference. This leads to a kref leak where the gss_auth structure is never freed. Add a forward declaration for gss_free_callback() and call kref_put() in the err_put_pipe_version error path to properly release the reference taken earlier.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/3b2b6c42070ce4204936288253baf101e995c2d3
- https://git.kernel.org/stable/c/b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7
- https://git.kernel.org/stable/c/a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6
- https://git.kernel.org/stable/c/655c9ba9915f05266998dbbf4b76b3c79b8a70aa
- https://git.kernel.org/stable/c/e464e26b2457005c87e158570498274b9f3b90c7
References (8)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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