In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()
There is a use-after-free error in cfg80211_shutdown_all_interfaces found by syzkaller:
BUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x213/0x220 Read of size 8 at addr ffff888112a78d98 by task kworker/0:5/5326 CPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 Not tainted 6.19.0-rc2 #2 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Workqueue: events cfg80211_rfkill_block_work Call Trace: <TASK> dump_stack_lvl+0x116/0x1f0 print_report+0xcd/0x630 kasan_report+0xe0/0x110 cfg80211_shutdown_all_interfaces+0x213/0x220 cfg80211_rfkill_block_work+0x1e/0x30 process_one_work+0x9cf/0x1b70 worker_thread+0x6c8/0xf10 kthread+0x3c5/0x780 ret_from_fork+0x56d/0x700 ret_from_fork_asm+0x1a/0x30 </TASK>
The problem arises due to the rfkill_block work is not cancelled when wiphy is being unregistered. In order to fix the issue cancel the corresponding work in wiphy_unregister().
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | May 3, 2026 | May 3, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Mar 25, 2026 |
| Ubuntu | — | Upgrade linux-image-realtime-6.8.1Upgrade linux-image-azure-cvmUpgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1059-nvidiaUpgrade linux-image-virtual-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-oracle-6.8Upgrade linux-image-realtime-5.15Upgrade linux-image-6.8.0-1058-oracleUpgrade linux-image-realtimeUpgrade linux-image-azure-fdeUpgrade linux-image-nvidia-6.8Upgrade linux-image-kvmUpgrade linux-image-oracle-64kUpgrade linux-image-intelUpgrade linux-image-azure-fde-5.15Upgrade linux-image-generic-64k-5.15Upgrade linux-image-6.8.0-1064-gcpUpgrade linux-image-oracle-5.15Upgrade linux-image-6.8.0-1061-aws-64kUpgrade linux-image-aws-6.8Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-6.8.0-1063-azureUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-136-lowlatency-64kUpgrade linux-image-5.15.0-1064-nvidia-tegra-rtUpgrade linux-image-5.15.0-1075-xilinx-zynqmpUpgrade linux-image-5.15.0-1053-nvidia-tegra-igxUpgrade linux-image-5.15.0-1106-ibmUpgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-raspiUpgrade linux-image-5.15.0-1107-nvidia-lowlatencyUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-5.15.0-1112-aws-64kUpgrade linux-image-aws-5.15Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-1108-gkeUpgrade linux-image-aws-fips-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-fips-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-5.15.0-1095-gkeopUpgrade linux-image-5.15.0-184-lowlatencyUpgrade linux-image-6.8.0-136-genericUpgrade linux-image-generic-64kUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-oem-22.04cUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.15.0-1064-nvidia-tegraUpgrade linux-image-5.15.0-1117-azure-fipsUpgrade linux-image-oem-20.04Upgrade linux-image-gke-6.8Upgrade linux-image-virtual-5.15Upgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-ibm-5.15Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-5.15.0-1109-oracleUpgrade linux-image-azureUpgrade linux-image-6.8.0-1059-gke-64kUpgrade linux-image-azure-fde-6.8Upgrade linux-image-lowlatency-5.15Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-azure-5.15Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-2050-raspi-realtimeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-5.15.0-186-fipsUpgrade linux-image-6.8.0-1063-azure-fipsUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-laptop-23.10Upgrade linux-image-oem-20.04cUpgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-136-fipsUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-5.15.0-1112-gcp-fipsUpgrade linux-image-raspi-5.15Upgrade linux-image-nvidia-5.15Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-6.8.0-1061-aws-fipsUpgrade linux-image-gkeop-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-6.8.0-1061-ibmUpgrade linux-image-6.8.0-1030-nvidia-tegra-rtUpgrade linux-image-azure-fips-5.15Upgrade linux-image-5.15.0-186-genericUpgrade linux-image-awsUpgrade linux-image-5.15.0-1053-nvidia-tegra-igx-rtUpgrade linux-image-5.15.0-1107-intel-iotgUpgrade linux-image-lowlatency-6.8Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-gcp-fipsUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-gkeUpgrade linux-image-gke-64kUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-5.15.0-1107-nvidiaUpgrade linux-image-raspi-6.8Upgrade linux-image-fips-5.15Upgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1104-intel-iot-realtimeUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-gcp-5.15Upgrade linux-image-aws-64k-5.15Upgrade linux-image-6.8.0-1033-xilinxUpgrade linux-image-5.15.0-1112-aws-fipsUpgrade linux-image-5.15.0-1112-awsUpgrade linux-image-gkeopUpgrade linux-image-oem-22.04bUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1059-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-186-generic-64kUpgrade linux-image-5.15.0-184-lowlatency-64kUpgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-136-lowlatencyUpgrade linux-image-6.8.0-1064-gcp-fipsUpgrade linux-image-5.15.0-186-generic-lpaeUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-fips-6.8Upgrade linux-image-fipsUpgrade linux-image-azure-fipsUpgrade linux-image-5.15.0-1112-gcpUpgrade linux-image-5.15.0-1106-raspiUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-xilinxUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-oracleUpgrade linux-image-oem-22.04Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-lowlatencyUpgrade linux-image-gke-5.15Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-6.8.0-1059-gkeUpgrade linux-image-6.8.0-1030-nvidia-tegraUpgrade linux-image-5.15.0-1104-kvmUpgrade linux-image-ibm-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-lowlatency-64kUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-aws-lts-22.04Upgrade linux-image-6.8.1-1056-realtimeUpgrade linux-image-6.8.0-1058-oracle-64kUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-azure-fips-6.8Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-ibmUpgrade linux-image-6.8.0-1064-gcp-64kUpgrade linux-image-6.8.0-1061-raspiUpgrade linux-image-6.8.0-1046-gkeopUpgrade linux-image-5.15.0-1117-azure-fdeUpgrade linux-image-5.15.0-1111-realtimeUpgrade linux-image-virtualUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-gcp-6.8Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-22.04aUpgrade linux-image-oem-20.04dUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-nvidiaUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-generic-lpaeUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-gcpUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-1061-awsUpgrade linux-image-5.15.0-1117-azureUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-kvm-5.15Upgrade linux-image-gkeop-6.8Upgrade linux-image-generic-6.8Upgrade linux-image-genericUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-oem-20.04bUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-raspi-realtimeUpgrade linux-image-raspi-nolpaeUpgrade linux-image-generic-5.15Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-azure-lts-22.04Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-1059-nvidia-lowlatencyUpgrade linux-image-6.8.0-1059-nvidia-64k | Jul 20, 2026 | Mar 25, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Mar 25, 2026 |
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