In the Linux kernel, the following vulnerability has been resolved:
NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds
Fix shift out-of-bounds in xprt_calc_majortimeo(). This is caused
by a garbage timeout (retrans) mount option being passed to nfs mount,
in this case from syzkaller.
If the protocol is XPRT_TRANSPORT_UDP, then 'retrans' is a shift
value for a 64-bit long integer, so 'retrans' cannot be >= 64.
If it is >= 64, fail the mount and return an error.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-02-27T18:40:35.343Z
Updated: 2024-08-04T05:17:43.053Z
Reserved: 2024-02-25T13:45:52.722Z
Link: CVE-2021-46952
Vulnrichment
Updated: 2024-08-04T05:17:43.053Z
NVD
Status : Analyzed
Published: 2024-02-27T19:04:06.517
Modified: 2024-04-10T20:15:42.153
Link: CVE-2021-46952
Redhat