Vulnerability Details : CVE-2021-47602
In the Linux kernel, the following vulnerability has been resolved:
mac80211: track only QoS data frames for admission control
For admission control, obviously all of that only works for
QoS data frames, otherwise we cannot even access the QoS
field in the header.
Syzbot reported (see below) an uninitialized value here due
to a status of a non-QoS nullfunc packet, which isn't even
long enough to contain the QoS header.
Fix this to only do anything for QoS data packets.
Products affected by CVE-2021-47602
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47602
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 15 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47602
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2024-10-31 |
CWE ids for CVE-2021-47602
-
The product accesses or uses a pointer that has not been initialized.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-47602
-
https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b
mac80211: track only QoS data frames for admission control - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9
mac80211: track only QoS data frames for admission control - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f
mac80211: track only QoS data frames for admission control - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a
mac80211: track only QoS data frames for admission control - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682
mac80211: track only QoS data frames for admission control - kernel/git/stable/linux.git - Linux kernel stable treePatch
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