CVE-2026-89540Medium· 4.7▾ SunlitA flaw was found in the Linux kernel's sunrpc component. A race condition exists where the `gssp_lock` mutex is not initialized before its associated `/proc/net/rpc/use-gss-proxy` entry is published. This allows a local attacker to trigger…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 25.9 · 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. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 4.1
none → medium
— → 7.8
none → high
7.8 → 4.1
high → medium
4.1 → 7.8
medium → high
7.8 → 7
0.2% → 0.2%
7 → 7.8
Last analysed / modified upstream
7.8 → 4.7
high → medium
A flaw was found in the Linux kernel's sunrpc component. A race condition exists where the gssp_lock mutex is not initialized before its associated /proc/net/rpc/use-gss-proxy entry is published. This allows a local attacker to trigger a scenario where multiple writers can concurrently access the set_gssp_clnt() function, leading to a denial of service for the first writer's client and a resource leak.
kernel: sunrpc: init gssp_lock before publishing proc entry — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-10-23.
Affected:
No fix planned:
Out of support scope
Workarounds / mitigations:
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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