vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-47602): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Jun 19, 2024 | Nov 19, 2024 | Apr 14, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Jun 19, 2024
Added
Nov 19, 2024
Modified
Apr 14, 2025
Description
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.
Solution(s)
ubuntu-upgrade-linux-image-4-4-0-1112-fipsubuntu-upgrade-linux-image-4-4-0-1142-awsubuntu-upgrade-linux-image-4-4-0-1143-kvmubuntu-upgrade-linux-image-4-4-0-1180-awsubuntu-upgrade-linux-image-4-4-0-267-genericubuntu-upgrade-linux-image-4-4-0-267-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-fipsubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-lts-xenial
References
- CVE-2021-47602
- https://attackerkb.com/topics/CVE-2021-47602
- UBUNTU-USN-7429-1
- UBUNTU-USN-7429-2
- URL-https://git.kernel.org/linus/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a
- URL-https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9
- URL-https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b
- URL-https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682
- URL-https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a
- URL-https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f
- URL-https://ubuntu.com/security/notices/USN-7429-1
- URL-https://ubuntu.com/security/notices/USN-7429-2
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47602
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