UBUNTU-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.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
6 explicit affected versions
15 explicit affected versions
7 explicit affected versions
76 explicit affected versions
41 explicit affected versions
56 explicit affected versions
29 explicit affected versions
35 explicit affected versions
18 explicit affected versions
88 explicit affected versions
13 explicit affected versions
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23 explicit affected versions
106 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
12 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
45 explicit affected versions
5 explicit affected versions
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12 explicit affected versions
44 explicit affected versions
105 explicit affected versions
31 explicit affected versions
10 explicit affected versions
173 explicit affected versions
37 explicit affected versions
10 explicit affected versions
1 explicit affected versions
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13 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
70 explicit affected versions
1 explicit affected versions
46 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
55 explicit affected versions
11 explicit affected versions
12 explicit affected versions
78 explicit affected versions
7 explicit affected versions
12 explicit affected versions
44 explicit affected versions
2 explicit affected versions
150 explicit affected versions
41 explicit affected versions
10 explicit affected versions
26 explicit affected versions
13 explicit affected versions
16 explicit affected versions
3 explicit affected versions
1 explicit affected versions
12 explicit affected versions
51 explicit affected versions
32 explicit affected versions
12 explicit affected versions
27 explicit affected versions
1 explicit affected versions
1 explicit affected versions
36 explicit affected versions
8 explicit affected versions
5 explicit affected versions
35 explicit affected versions
8 explicit affected versions
1 explicit affected versions
34 explicit affected versions
10 explicit affected versions
13 explicit affected versions
1 explicit affected versions
7 explicit affected versions
32 explicit affected versions
10 explicit affected versions
12 explicit affected versions
31 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
37 explicit affected versions
38 explicit affected versions
9 explicit affected versions
11 explicit affected versions
34 explicit affected versions
7 explicit affected versions
83 explicit affected versions
14 explicit affected versions
86 explicit affected versions
63 explicit affected versions
4 explicit affected versions
54 explicit affected versions
34 explicit affected versions
43 explicit affected versions
1 explicit affected versions
129 explicit affected versions
103 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
35 explicit affected versions
4 explicit affected versions
23 explicit affected versions
1 explicit affected versions
10 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a
- https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9
- https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b
- https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682
- https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a
- https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f
- https://ubuntu.com/security/CVE-2021-47602
- https://ubuntu.com/security/notices/USN-7429-1
- https://ubuntu.com/security/notices/USN-7429-2
- https://www.cve.org/CVERecord?id=CVE-2021-47602