Unrated severityNVD Advisory· Published Oct 21, 2024· Updated Jan 5, 2026

wifi: cfg80211: Set correct chandef when starting CAC

CVE-2024-49937

Description

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

When starting CAC in a mode other than AP mode, it return a "WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]" caused by the chandef.chan being null at the end of CAC.

Solution: Ensure the channel definition is set for the different modes when starting CAC to avoid getting a NULL 'chan' at the end of CAC.

Call Trace: ? show_regs.part.0+0x14/0x16 ? __warn+0x67/0xc0 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? report_bug+0xa7/0x130 ? exc_overflow+0x30/0x30 ? handle_bug+0x27/0x50 ? exc_invalid_op+0x18/0x60 ? handle_exception+0xf6/0xf6 ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211] ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211] ? process_one_work+0x165/0x280 ? worker_thread+0x120/0x3f0 ? kthread+0xc2/0xf0 ? process_one_work+0x280/0x280 ? kthread_complete_and_exit+0x20/0x20 ? ret_from_fork+0x19/0x24

[shorten subject, remove OCB, reorder cases to match previous list]

Affected products

Linux/Linux Kernel Rtllm-fuzzy
osv-coords71 versions
pkg:deb/ubuntu/linux@6.11.0-18.18?arch=source&distro=oracular pkg:deb/ubuntu/linux-aws@6.11.0-1009.10?arch=source&distro=oracular pkg:deb/ubuntu/linux-azure@6.11.0-1009.9?arch=source&distro=oracular pkg:deb/ubuntu/linux-gcp@6.11.0-1009.9?arch=source&distro=oracular pkg:deb/ubuntu/linux-lowlatency@6.11.0-1010.11?arch=source&distro=oracular pkg:deb/ubuntu/linux-oracle@6.11.0-1011.12?arch=source&distro=oracular pkg:deb/ubuntu/linux-raspi@6.11.0-1008.8?arch=source&distro=oracular pkg:deb/ubuntu/linux-realtime@6.11.0-1005.5?arch=source&distro=oracular pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/kernel-source-longterm&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.6 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6 pkg:rpm/suse/kernel-coco_debug&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6 pkg:rpm/suse/kernel-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6 pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-livepatch-MICRO-6-0-RT_Update_4&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-livepatch-MICRO-6-0-RT_Update_4&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-livepatch-MICRO-6-0_Update_4&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-livepatch-MICRO-6-0_Update_4&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-livepatch-SLE15-SP6-RT_Update_5&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6 pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_6&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP6 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6 pkg:rpm/suse/kernel-source-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6 pkg:rpm/suse/kernel-syms-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6
< 6.11.0-18.18+ 70 more
- (no CPE)range: < 6.11.0-18.18
- (no CPE)range: < 6.11.0-1009.10
- (no CPE)range: < 6.11.0-1009.9
- (no CPE)range: < 6.11.0-1009.9
- (no CPE)range: < 6.11.0-1010.11
- (no CPE)range: < 6.11.0-1011.12
- (no CPE)range: < 6.11.0-1008.8
- (no CPE)range: < 6.11.0-1005.5
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.8.17.2
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1.150600.12.12.6
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.10.17.1
- (no CPE)range: < 6.4.0-150600.10.17.1
- (no CPE)range: < 6.4.0-150600.8.17.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.11.8-1.1
- (no CPE)range: < 6.12.11-1.1
- (no CPE)range: < 6.4.0-150600.10.17.1
- (no CPE)range: < 6.4.0-150600.8.17.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.10.17.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.8.17.2
- (no CPE)range: < 6.4.0-15061.9.coco15sp6.1
- (no CPE)range: < 6.4.0-15061.9.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.30.1.150600.12.12.6
- (no CPE)range: < 6.4.0-24.1.21.4
- (no CPE)range: < 6.4.0-24.1.21.4
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-24.1
- (no CPE)range: < 6.4.0-24.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-24.1
- (no CPE)range: < 6.4.0-24.1
- (no CPE)range: < 1-1.1
- (no CPE)range: < 1-1.1
- (no CPE)range: < 1-1.2
- (no CPE)range: < 1-1.2
- (no CPE)range: < 1-150600.1.3.1
- (no CPE)range: < 1-150600.13.3.5
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.10.17.1
- (no CPE)range: < 6.4.0-22.1
- (no CPE)range: < 6.4.0-22.1
- (no CPE)range: < 6.4.0-150600.10.17.1
- (no CPE)range: < 6.4.0-150600.8.17.1
- (no CPE)range: < 6.4.0-15061.9.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-24.1
- (no CPE)range: < 6.4.0-24.1
- (no CPE)range: < 6.4.0-22.1
- (no CPE)range: < 6.4.0-22.1
- (no CPE)range: < 6.4.0-150600.10.17.1
- (no CPE)range: < 6.4.0-150600.8.17.1
- (no CPE)range: < 6.4.0-15061.9.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.30.1
- (no CPE)range: < 6.4.0-150600.10.17.1
- (no CPE)range: < 6.4.0-150600.23.30.1
Linux/Linuxcpe-rescue
Range: 6.0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

News mentions

No linked articles in our index yet.

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