nfsd: Fix cred ref leak in nfsd_nl_listener_set_doit().

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Summary

CVECVE-2026-43394
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:50 UTC
Updated2026-05-12 14:10:27 UTC
DescriptionIn 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().

Risk And Classification

EPSS: 0.000180000 probability, percentile 0.047270000 (date 2026-05-12)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 16a471177496c8e04a9793812c187a2c1a2192fa 02e87ec0bc706cb93fa47b43d18c4d10102c7d54 git Not specified
CNA Linux Linux affected 16a471177496c8e04a9793812c187a2c1a2192fa 019debe5851d7355bea9ff0248cc317878924d8f git Not specified
CNA Linux Linux affected 16a471177496c8e04a9793812c187a2c1a2192fa cba413765376bb466035c9160fa3130402971e2c git Not specified
CNA Linux Linux affected 16a471177496c8e04a9793812c187a2c1a2192fa 92978c83bb4eef55d02a6c990c01c423131eefa7 git Not specified
CNA Linux Linux affected 6.10 Not specified
CNA Linux Linux unaffected 6.10 semver Not specified
CNA Linux Linux unaffected 6.12.78 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.19 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.9 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/019debe5851d7355bea9ff0248cc317878924d8f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cba413765376bb466035c9160fa3130402971e2c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/92978c83bb4eef55d02a6c990c01c423131eefa7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/02e87ec0bc706cb93fa47b43d18c4d10102c7d54 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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