CVE-2021-46952
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-46952
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46952.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-46952
- Related
- Published
- 2024-02-27T19:04:06Z
- Modified
- 2024-11-21T06:35:00Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 xprtcalcmajortimeo(). This is caused by a garbage timeout (retrans) mount option being passed to nfs mount, in this case from syzkaller.
If the protocol is XPRTTRANSPORTUDP, 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.
- References
-
- https://git.kernel.org/stable/c/2f3380121d49e829fb73ba86240c181bc32ad897
- https://git.kernel.org/stable/c/3d0163821c035040a46d816a42c0780f0f0a30a8
- https://git.kernel.org/stable/c/96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2
- https://git.kernel.org/stable/c/c09f11ef35955785f92369e25819bf0629df2e59
- https://security-tracker.debian.org/tracker/CVE-2021-46952
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source