In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix user-after-free
This uses l2cap_chan_hold_unless_zero() after calling __l2cap_get_chan_blah() to prevent the following trace:
Bluetooth: l2cap_core.c:static void l2cap_chan_destroy(struct kref *kref) Bluetooth: chan 0000000023c4974d Bluetooth: parent 00000000ae861c08 ================================================================== BUG: KASAN: use-after-free in __mutex_waiter_is_first kernel/locking/mutex.c:191 [inline] BUG: KASAN: use-after-free in __mutex_lock_common kernel/locking/mutex.c:671 [inline] BUG: KASAN: use-after-free in __mutex_lock+0x278/0x400 kernel/locking/mutex.c:729 Read of size 8 at addr ffff888006a49b08 by task kworker/u3:2/389
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade perfUpgrade kernel-develUpgrade python3-perfUpgrade kernel-modules-extraUpgrade kernel-modulesUpgrade kernel-debugUpgrade kernel-rt-debug-develUpgrade kernel-rt-develUpgrade kernelUpgrade kernel-debug-coreUpgrade kernel-debug-develUpgrade kernel-cross-headersUpgrade kernel-rt-debug-modulesUpgrade kernel-coreUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-debugUpgrade kernel-rt-coreUpgrade kernel-zfcpdump-develUpgrade kernel-rt-modules-extraUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdumpUpgrade kernel-debug-modulesUpgrade kernel-docUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rtUpgrade kernel-zfcpdump-modulesUpgrade kernel-headersUpgrade kernel-rt-modules | Oct 29, 2025 | Oct 27, 2025 |
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade kernel-livepatch-4.14.296-222.539Upgrade kernel-tools-develUpgrade perfUpgrade kernel-develUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade python-perf | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Sep 22, 2025 | Sep 22, 2025 |
| Oracle_linux | — | Upgrade kernel | Oct 29, 2025 | Sep 18, 2025 |
| Redhat_linux | — | No solution existsUpgrade kernel-rtUpgrade kernel | Oct 28, 2025 | Sep 18, 2025 |
| Rocky_linux | — | Upgrade kernel-tools-debuginfoUpgrade kernel-rt-debugUpgrade kernel-debug-develUpgrade kernel-modules-extraUpgrade kernel-tools-libsUpgrade kernel-rt-debug-kvmUpgrade bpftoolUpgrade kernel-rt-debug-develUpgrade kernel-rt-kvmUpgrade kernel-debug-coreUpgrade kernel-rt-debug-coreUpgrade kernel-debuginfoUpgrade kernel-rt-debug-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-coreUpgrade kernel-develUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-modulesUpgrade python3-perfUpgrade kernel-debugUpgrade kernel-coreUpgrade perfUpgrade kernel-rt-develUpgrade kernelUpgrade kernel-toolsUpgrade kernel-rt-modulesUpgrade kernel-rtUpgrade bpftool-debuginfoUpgrade kernel-rt-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-modules-extraUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-debuginfoUpgrade kernel-debug-modulesUpgrade perf-debuginfoUpgrade kernel-tools-libs-devel | Feb 5, 2026 | Nov 2, 2025 |
| Ubuntu | — | Upgrade linux-gcpUpgrade linuxUpgrade linux-bluefieldUpgrade linux-aws-5.15Upgrade linux-oracle-5.4Upgrade linux-ibm-5.4Upgrade linux-raspi-5.4Upgrade linux-raspiUpgrade linux-gkeUpgrade linux-aws-5.4Upgrade linux-awsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-fdeUpgrade linux-gcp-fipsUpgrade linux-riscv-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-intel-iotg-5.15Upgrade linux-gcp-5.15Upgrade linux-gcp-4.15Upgrade linux-oracleUpgrade linux-hwe-5.15Upgrade linux-aws-fipsUpgrade linux-azure-5.4Upgrade linux-ibmUpgrade linux-azure-fipsUpgrade linux-iotUpgrade linux-gcp-5.4Upgrade linux-hweUpgrade linux-gkeopUpgrade linux-nvidiaUpgrade linux-azure-4.15Upgrade linux-hwe-5.4Upgrade linux-lowlatencyUpgrade linux-azure-fde-5.15Upgrade linux-realtimeUpgrade linux-oracle-5.15Upgrade linux-aws-hweUpgrade linux-kvmUpgrade linux-intel-iotgUpgrade linux-fipsUpgrade linux-azureUpgrade linux-azure-5.15 | Sep 26, 2025 | Sep 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Sep 18, 2025 |
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