CVE-2026-43394
MEDIUM severity · CVSS 5.5 · CWE-401
5.5CVSS MEDIUM
Summary
In the Linux kernel, the following vulnerability has been resolved: nfsd: Fix cred ref leak in nfsd_nl_listener_set_doit(). nfsd_nl_listener_set_doit() uses get_current_cred() without put_cred(). As we can see from other callers, svc_xprt_create_from_sa() does not require the extra refcount. nfsd_nl_listener_set_doit() is always in the process context, sendmsg(), and current->cred does not go away. Let's use current_cred() in nfsd_nl_listener_set_doit().
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/019debe5851d7355bea9ff0248cc317878924d8f ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/019debe5851d7355bea9ff0248cc317878924d8fPatch
- https://git.kernel.org/stable/c/02e87ec0bc706cb93fa47b43d18c4d10102c7d54Patch
- https://git.kernel.org/stable/c/92978c83bb4eef55d02a6c990c01c423131eefa7Patch
- https://git.kernel.org/stable/c/cba413765376bb466035c9160fa3130402971e2cPatch