CVE-2025-21909

wifi: nl80211: reject cooked mode if it is set along with other flags

State: Published
Severity: Not scored
Published: Apr 1, 2025
Updated: May 11, 2026
Reserved: Dec 29, 2024

Description

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

wifi: nl80211: reject cooked mode if it is set along with other flags

It is possible to set both MONITOR_FLAG_COOK_FRAMES and MONITOR_FLAG_ACTIVE flags simultaneously on the same monitor interface from the userspace. This causes a sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit set because the monitor interface is in the cooked state and it takes precedence over all other states. When the interface is then being deleted the kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing that bit.

Fix this by rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with other flags.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 5ea856d93794c4afa5542defd8c61f2708dc245aAffected 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7Affected 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before cd1bdcb77fdc03c253137e55bae10551b3481461Affected 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 236f41ca728f23210b31ed2d1d8a6df575a4b2d6Affected 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before ebebbb0eded2ed9a1abfa31962f6fb699e6abce7Affected 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 521e55c2b0d6028861ac0a2d06aa57bb0e3ac486Affected 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before ac4860141300581d3e2f6c6dafa37220f7ea9f65Affected 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 49f27f29446a5bfe633dd2cc0cfebd48a1a5e77fAffected
LinuxLinux	2.6.26Affected before 2.6.26Not affected 5.4.291 through 5.4.Not affected 5.10.235 through 5.10.Not affected 5.15.179 through 5.15.Not affected 6.1.131 through 6.1.Not affected 6.6.83 through 6.6.Not affected 6.12.19 through 6.12.Not affected 6.13.7 through 6.13.*Not affected 6.14 and laterNot affected

Product

Versions

LinuxLinux

66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 5ea856d93794c4afa5542defd8c61f2708dc245aAffected
66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7Affected
66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before cd1bdcb77fdc03c253137e55bae10551b3481461Affected
66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 236f41ca728f23210b31ed2d1d8a6df575a4b2d6Affected
66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before ebebbb0eded2ed9a1abfa31962f6fb699e6abce7Affected
66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 521e55c2b0d6028861ac0a2d06aa57bb0e3ac486Affected
66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before ac4860141300581d3e2f6c6dafa37220f7ea9f65Affected
66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a to before 49f27f29446a5bfe633dd2cc0cfebd48a1a5e77fAffected

LinuxLinux

2.6.26Affected
before 2.6.26Not affected
5.4.291 through 5.4.*Not affected
5.10.235 through 5.10.*Not affected
5.15.179 through 5.15.*Not affected
6.1.131 through 6.1.*Not affected
6.6.83 through 6.6.*Not affected
6.12.19 through 6.12.*Not affected
6.13.7 through 6.13.*Not affected
6.14 and laterNot affected

References

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