In the Linux kernel, the following vulnerability has been resolved:
scsi: libsas: Fix use-after-free bug in smp_execute_task_sg()
When executing SMP task failed, the smp_execute_task_sg() calls del_timer() to delete "slow_task->timer". However, if the timer handler sas_task_internal_timedout() is running, the del_timer() in smp_execute_task_sg() will not stop it and a UAF will happen. The process is shown below:
(thread 1) | (thread 2) smp_execute_task_sg() | sas_task_internal_timedout() ... | del_timer() | ... | ... sas_free_task(task) | kfree(task->slow_task) //FREE| | task->slow_task->... //USE
Fix by calling del_timer_sync() in smp_execute_task_sg(), which makes sure the timer handler have finished before the "task->slow_task" is deallocated.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.15.75-48.135Upgrade kernel-tools-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade bpftoolUpgrade kernel-livepatch-5.10.155-138.670Upgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade perfUpgrade kernel-toolsUpgrade python-perfUpgrade kernel-livepatch-4.14.355-280.706Upgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfo | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Oct 3, 2025 | Oct 3, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade python3-perfUpgrade bpftool | Feb 3, 2026 | Feb 2, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Oct 1, 2025 |
| Ubuntu | — | Upgrade linux-aws-5.4Upgrade linux-awsUpgrade linux-lowlatencyUpgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-realtimeUpgrade linux-fipsUpgrade linux-oracle-5.15Upgrade linux-raspi-5.4Upgrade linux-ibm-5.4Upgrade linux-gkeUpgrade linux-raspiUpgrade linux-oracle-5.4Upgrade linux-intel-iotgUpgrade linux-riscv-5.15Upgrade linux-aws-5.15Upgrade linuxUpgrade linux-ibmUpgrade linux-azure-5.15Upgrade linux-azureUpgrade linux-oracleUpgrade linux-gcp-5.4Upgrade linux-azure-fipsUpgrade linux-hwe-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-hwe-5.4Upgrade linux-iotUpgrade linux-gkeopUpgrade linux-gcp-fipsUpgrade linux-azure-5.4Upgrade linux-kvmUpgrade linux-aws-fipsUpgrade linux-gcpUpgrade linux-intel-iotg-5.15Upgrade linux-gcp-5.15Upgrade linux-nvidia | Oct 10, 2025 | Oct 1, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Oct 1, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub