CVE-2026-74730

Summary

In the Linux kernel, the following vulnerability has been resolved:

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call

Dan Aloni reports that he was able to hit a use-after-free bug if a FREE_STATEID operation gets delayed for whatever reason. Fix this by bumping the refcount of the 'struct nfs_server' object for the duration of the FREE_STATEID so it doesn't get cleaned up from underneath us while operations are still in flight.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 < ed2f92ce2fc48463c41e0e540b9a3454889e8af8affected
LinuxLinux7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 < d858ab09e787106432d4d9830bad9dfedf02f890affected
LinuxLinux7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 < af62f1af182d33a0de38308c012841885d8ab92eaffected
LinuxLinux7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 < caee6a68ffaa5016dfc01cd0b3dc1896a32e3abdaffected
LinuxLinux7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 < ed1161ab6239761958b38d5667225634fc2be894affected
LinuxLinux7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 < d71dfffa512e71b166a889484e4c3b148a9a3af2affected
LinuxLinux7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 < 80ed3d762628b36c9e4b22fac7c65b72ef3b13ddaffected
LinuxLinux7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 < cf616096a0f3a2b60f7d68b6b39674a6867ded9caffected
LinuxLinux3.10affected
LinuxLinux0 < 3.10unaffected
LinuxLinux5.10.265 <= 5.10.*unaffected
LinuxLinux5.15.216 <= 5.15.*unaffected
LinuxLinux6.1.183 <= 6.1.*unaffected
LinuxLinux6.6.152 <= 6.6.*unaffected
LinuxLinux6.12.104 <= 6.12.*unaffected
LinuxLinux6.18.45 <= 6.18.*unaffected
LinuxLinux7.1.9 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References