Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9954bf92c0cddd50a2a470be302e1c1ffdf21d42 before 96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2; affected 9954bf92c0cddd50a2a470be302e1c1ffdf21d42 before 2f3380121d49e829fb73ba86240c181bc32ad897; affected 9954bf92c0cddd50a2a470be302e1c1ffdf21d42 before 3d0163821c035040a46d816a42c0780f0f0a30a8; affected 9954bf92c0cddd50a2a470be302e1c1ffdf21d42 before c09f11ef35955785f92369e25819bf0629df2e59 |
| Linux / Linux | affected 5.6; unaffected 0 before 5.6; unaffected 5.10.36 through 5.10.*; unaffected 5.11.20 through 5.11.*; unaffected 5.12.3 through 5.12.*; unaffected 5.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2
- https://git.kernel.org/stable/c/2f3380121d49e829fb73ba86240c181bc32ad897
- https://git.kernel.org/stable/c/3d0163821c035040a46d816a42c0780f0f0a30a8
- https://git.kernel.org/stable/c/c09f11ef35955785f92369e25819bf0629df2e59
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.