Debian Security Bug TrackerDEBIANCVE:CVE-2021-4090CVE-2021-4090
6.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:C/I:C/A:N
7.1 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
0.0004 Low
EPSS
Percentile
5.1%
An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | linux | < 5.15.5-1 | linux_5.15.5-1_all.deb |
| Debian | 11 | all | linux | < 5.10.218-1 | linux_5.10.218-1_all.deb |
| Debian | 999 | all | linux | < 5.15.5-1 | linux_5.15.5-1_all.deb |
| Debian | 13 | all | linux | < 5.15.5-1 | linux_5.15.5-1_all.deb |
Related
6.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:C/I:C/A:N
7.1 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
0.0004 Low
EPSS
Percentile
5.1%