Debian Security Bug TrackerDEBIANCVE:CVE-2021-46952CVE-2021-46952
7.1 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
5.1%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | linux | < 5.10.38-1 | linux_5.10.38-1_all.deb |
| Debian | 11 | all | linux | < 5.10.38-1 | linux_5.10.38-1_all.deb |
| Debian | 10 | all | linux | < 4.19.249-2 | linux_4.19.249-2_all.deb |
| Debian | 999 | all | linux | < 5.10.38-1 | linux_5.10.38-1_all.deb |
| Debian | 13 | all | linux | < 5.10.38-1 | linux_5.10.38-1_all.deb |
Related
7.1 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
5.1%