{"timestamp":"2024-05-22T18:38:36.269063Z","id":"CVE-2021-47494","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["include/net/cfg80211.h","net/wireless/core.c","net/wireless/core.h","net/wireless/mlme.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"6cd536fe62ef58d7c4eac2da07ab0ed7fd19010d","lessThan":"4c22227e39c7a0b4dab55617ee8d34d171fab8d4","versionType":"git","status":"affected"},{"version":"6cd536fe62ef58d7c4eac2da07ab0ed7fd19010d","lessThan":"3c897f39b71fe68f90599f6a45b5f7bf5618420e","versionType":"git","status":"affected"},{"version":"6cd536fe62ef58d7c4eac2da07ab0ed7fd19010d","lessThan":"09b1d5dc6ce1c9151777f6c4e128a59457704c97","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["include/net/cfg80211.h","net/wireless/core.c","net/wireless/core.h","net/wireless/mlme.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.8","status":"affected"},{"version":"0","lessThan":"5.8","versionType":"semver","status":"unaffected"},{"version":"5.10.77","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.14.16","lessThanOrEqual":"5.14.*","versionType":"semver","status":"unaffected"},{"version":"5.15","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-667

OR
          *cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.8 up to (excluding) 5.10.77
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.14.16
          *cpe:2.3:o:linux:linux_kernel:5.15:rc7:*:*:*:*:*:*

CVE: https://git.kernel.org/stable/c/09b1d5dc6ce1c9151777f6c4e128a59457704c97 Types: Patch

CVE: https://git.kernel.org/stable/c/3c897f39b71fe68f90599f6a45b5f7bf5618420e Types: Patch

CVE: https://git.kernel.org/stable/c/4c22227e39c7a0b4dab55617ee8d34d171fab8d4 Types: Patch

kernel.org: https://git.kernel.org/stable/c/09b1d5dc6ce1c9151777f6c4e128a59457704c97 Types: Patch

kernel.org: https://git.kernel.org/stable/c/3c897f39b71fe68f90599f6a45b5f7bf5618420e Types: Patch

kernel.org: https://git.kernel.org/stable/c/4c22227e39c7a0b4dab55617ee8d34d171fab8d4 Types: Patch

https://git.kernel.org/stable/c/09b1d5dc6ce1c9151777f6c4e128a59457704c97

https://git.kernel.org/stable/c/3c897f39b71fe68f90599f6a45b5f7bf5618420e

https://git.kernel.org/stable/c/4c22227e39c7a0b4dab55617ee8d34d171fab8d4

In the Linux kernel, the following vulnerability has been resolved:

cfg80211: fix management registrations locking

The management registrations locking was broken, the list was
locked for each wdev, but cfg80211_mgmt_registrations_update()
iterated it without holding all the correct spinlocks, causing
list corruption.

Rather than trying to fix it with fine-grained locking, just
move the lock to the wiphy/rdev (still need the list on each
wdev), we already need to hold the wdev lock to change it, so
there's no contention on the lock in any case. This trivially
fixes the bug since we hold one wdev's lock already, and now
will hold the lock that protects all lists.

kernel.org https://git.kernel.org/stable/c/09b1d5dc6ce1c9151777f6c4e128a59457704c97 [No types assigned]

kernel.org https://git.kernel.org/stable/c/3c897f39b71fe68f90599f6a45b5f7bf5618420e [No types assigned]

kernel.org https://git.kernel.org/stable/c/4c22227e39c7a0b4dab55617ee8d34d171fab8d4 [No types assigned]