CVE-2025-21909None▾ SunlitIn 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 …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a < 5ea856d93794c4afa5542defd8c61f2708dc245aLinux >= 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a < 351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7Linux >= 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a < cd1bdcb77fdc03c253137e55bae10551b3481461Linux >= 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a < 236f41ca728f23210b31ed2d1d8a6df575a4b2d6Linux >= 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a < ebebbb0eded2ed9a1abfa31962f6fb699e6abce7Linux >= 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a < 521e55c2b0d6028861ac0a2d06aa57bb0e3ac486Linux >= 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a < ac4860141300581d3e2f6c6dafa37220f7ea9f65Linux >= 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a < 49f27f29446a5bfe633dd2cc0cfebd48a1a5e77fLinux 2.6.26Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-99284Nonenet: skbuff: propagate shared-frag marker in skb_zerocopy()
CVE-2026-99283Nonenetfilter: conntrack: tcp: use UNACK timeout for non-closing RST packets
CVE-2026-99272Nonesmb: client: validate the data area in SMB2_read()
CVE-2026-99271NoneALSA: line6: Clear prev_fbuf on capture buffer release
CVE-2026-99273Noneksmbd: reserve space for the UTF-16 terminator in stream info
CVE-2026-99275Nonesmb: client: reject short SESSION_SETUP responses