Critical severity · published Aug 22, 2026
CVE-2026-74730
NFS: Pin the 'struct nfs_server' during a FREE_STATEID call
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 before ed2f92ce2fc48463c41e0e540b9a3454889e8af8; 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 before d858ab09e787106432d4d9830bad9dfedf02f890; 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 before af62f1af182d33a0de38308c012841885d8ab92e; 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 before caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd; 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 before ed1161ab6239761958b38d5667225634fc2be894; 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 before d71dfffa512e71b166a889484e4c3b148a9a3af2; +3 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74730
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74730
git.kernel.org
https://git.kernel.org/stable/c/80ed3d762628b36c9e4b22fac7c65b72ef3b13dd
git.kernel.org
https://git.kernel.org/stable/c/af62f1af182d33a0de38308c012841885d8ab92e
git.kernel.org
https://git.kernel.org/stable/c/caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd
git.kernel.org
https://git.kernel.org/stable/c/cf616096a0f3a2b60f7d68b6b39674a6867ded9c
git.kernel.org
https://git.kernel.org/stable/c/d71dfffa512e71b166a889484e4c3b148a9a3af2
git.kernel.org
https://git.kernel.org/stable/c/d858ab09e787106432d4d9830bad9dfedf02f890
More from Linux
9.8
CVE-2025-39682
tls: fix handling of zero-length records on the rx_list
8.8
CVE-2026-53266
netfilter: bridge: make ebt_snat ARP rewrite writable
7.8
CVE-2026-53362
ipv6: account for fraggap on the paged allocation path
7.8
CVE-2026-31431
crypto: algif_aead - Revert to operating out-of-place
7.8
CVE-2025-38352
posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()