CVE-2026-89546Medium· 5.3▾ SunlitA flaw was found in the Linux kernel's SUNRPC (Sun Remote Procedure Call) Network File System (NFS) callback service. A race condition during the service teardown can lead to system resources not being properly released, causing a resource…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.1 · exploitation 0
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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%
— → 5.3
none → medium
Last analysed / modified upstream
0.2% → 0.5%
— → 5.3
none → medium
— → 9.8
none → critical
9.8 → 5.3
critical → medium
5.3 → 9.8
medium → critical
9.8 → 5.3
critical → medium
A flaw was found in the Linux kernel's SUNRPC (Sun Remote Procedure Call) Network File System (NFS) callback service. A race condition during the service teardown can lead to system resources not being properly released, causing a resource leak. This issue could also result in a use-after-free vulnerability, where the system attempts to access memory that has already been deallocated. An attacker could potentially exploit this vulnerability to cause a denial of service, making the affected system unstable or unresponsive.
kernel: Linux Kernel: Resource management flaw in SUNRPC NFS callback service — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-13.
Affected:
No fix planned:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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