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In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: fw_tracer, return NULL on create error
Tracer creation can fail by returning either NULL or ERR_PTR. The return value is stored without a check on the device, and users treat ERR_PTR and NULL the same way. This also causes a crash in the core dump logic, which is missing the ERR_PTR check and ends up dereferencing it, as shown in the trace below.
Switch tracer creation to return NULL on failure only, so callers only need a single NULL check.
Internal error: Oops: 0000000096000006 [#1] SMP Modules linked in: mlx5_ib ib_uverbs ib_core ipv6 mlx5_core CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.19.7 #1 PREEMPT(none) Workqueue: mlx5_health0001:01:00.0 mlx5_fw_reporter_err_work [mlx5_core] pstate: a3400009 (NzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : mlx5_fw_tracer_trigger_core_dump_general+0x58/0xe0 [mlx5_core] lr : mlx5_fw_tracer_trigger_core_dump_general+0x40/0xe0 [mlx5_core] sp : ffff800081cf3c40 x29: ffff800081cf3c90 x28: 0000000000000000 x27: 0000000000000000 x26: ffff000080018828 x25: 0000000000000000 x24: ffff000080304a05 x23: ffff800081cf3d80 x22: ffff0000847e01a0 x21: 0000000000000000 x20: ffff0000847e01a0 x19: ffffffffffffffa1 x18: ffff80008310bbf0 x17: ffff800080119650 x16: ffff80008010df54 x15: ffff80008010d4ac x14: ffff800079c202e4 x13: ffff80008002fe60 x12: ffff800080119650 x11: ffff80008010df54 x10: ffff80008010d4ac x9 : ffff800079c203d8 x8 : ffff800081cf3c88 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000008 x3 : 0000000000000030 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 00000000c5c4000e Call trace: mlx5_fw_tracer_trigger_core_dump_general+0x58/0xe0 [mlx5_core] (P) mlx5_fw_reporter_dump+0x30/0x2e0 [mlx5_core] devlink_health_do_dump+0x9c/0x160 devlink_health_report+0x1c0/0x288 mlx5_fw_reporter_err_work+0xac/0xc0 [mlx5_core] process_one_work+0x15c/0x3d8 worker_thread+0x18c/0x320 kthread+0x148/0x228 ret_from_fork+0x10/0x20 Code: b9400000 5ac00800 7a401800 540003ca (3940a260) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Oops: Fatal exception SMP: stopping secondary CPUs Kernel Offset: disabled CPU features: 0x000000,00078031,75fce5a1,35fffe67 Memory Limit: none ---[ end Kernel panic - not syncing: Oops: Fatal exception ]---
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-toolsUpgrade kernel-tools-develUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade kernel-develUpgrade perfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.10.265-265.1078Upgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-livepatch-5.15.220-153.252Upgrade kernel-tools-debuginfoUpgrade python-perf-debuginfoUpgrade kernelUpgrade perf-debuginfo | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.18-toolsUpgrade python3-perf6.18-debuginfoUpgrade kernel6.18-debuginfoUpgrade bpftool6.18-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18Upgrade kernel6.18-develUpgrade kernel6.18-headersUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.18-modules-extraUpgrade python3-perf6.18Upgrade perf6.18Upgrade microvm-kernel6.18Upgrade kernel6.18-tools-develUpgrade bpftool6.18Upgrade kernel-livepatch-6.18.48-107.148Upgrade kernel6.18-modules-extra-commonUpgrade perf6.18-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64 | Sep 30, 2026 | Aug 22, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Aug 26, 2026 | Aug 26, 2026 |
| Redhat_linux | — | No solution exists | Aug 26, 2026 | Aug 22, 2026 |
| Ubuntu | — | Upgrade linux-image-aws-64k-5.15Upgrade linux-image-6.8.0-1036-nvidia-tegraUpgrade linux-image-azure-cvmUpgrade linux-image-5.15.0-195-lowlatency-64kUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-kvmUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-oracle-5.15Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-5.15.0-1112-nvidiaUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-azure-fdeUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-gke-5.15Upgrade linux-image-azure-5.15Upgrade linux-image-aws-lts-22.04Upgrade linux-image-azure-fipsUpgrade linux-image-5.15.0-198-generic-64kUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gcp-fipsUpgrade linux-image-5.15.0-1118-gcpUpgrade linux-image-awsUpgrade linux-image-5.15.0-1109-intel-iot-realtimeUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-lowlatencyUpgrade linux-image-generic-64k-5.15Upgrade linux-image-azure-fde-5.15Upgrade linux-image-azureUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-gcp-5.15Upgrade linux-image-5.15.0-1117-aws-fipsUpgrade linux-image-virtual-5.15Upgrade linux-image-ibmUpgrade linux-image-5.15.0-1112-intel-iotgUpgrade linux-image-5.15.0-1100-gkeopUpgrade linux-image-aws-fips-5.15Upgrade linux-image-aws-fipsUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-5.15.0-1123-azure-fipsUpgrade linux-image-5.15.0-1117-awsUpgrade linux-image-ibm-5.15Upgrade linux-image-generic-5.15Upgrade linux-image-fipsUpgrade linux-image-intelUpgrade linux-image-nvidia-5.15Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-generic-64kUpgrade linux-image-5.15.0-1117-aws-64kUpgrade linux-image-5.15.0-198-fipsUpgrade linux-image-fips-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-nvidiaUpgrade linux-image-5.15.0-1114-oracleUpgrade linux-image-5.15.0-195-lowlatencyUpgrade linux-image-genericUpgrade linux-image-5.15.0-198-genericUpgrade linux-image-5.15.0-1122-azure-fdeUpgrade linux-image-5.15.0-1113-gkeUpgrade linux-image-5.15.0-1109-kvmUpgrade linux-image-6.8.0-1036-nvidia-tegra-rtUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-5.15.0-1118-gcp-fipsUpgrade linux-image-oem-20.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-realtimeUpgrade linux-image-aws-5.15Upgrade linux-image-oem-20.04dUpgrade linux-image-gkeop-5.15Upgrade linux-image-azure-lts-22.04Upgrade linux-image-azure-fips-5.15Upgrade linux-image-gcpUpgrade linux-image-5.15.0-198-generic-lpaeUpgrade linux-image-generic-lpaeUpgrade linux-image-realtime-5.15Upgrade linux-image-5.15.0-1116-realtimeUpgrade linux-image-5.15.0-1123-azureUpgrade linux-image-5.15.0-1080-xilinx-zynqmpUpgrade linux-image-gkeUpgrade linux-image-gkeopUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-lowlatency-5.15Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-oem-20.04bUpgrade linux-image-virtualUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-kvm-5.15Upgrade linux-image-nvidia-tegraUpgrade linux-image-intel-iotgUpgrade linux-image-oem-20.04cUpgrade linux-image-oracleUpgrade linux-image-5.15.0-1111-ibmUpgrade linux-image-5.15.0-1112-nvidia-lowlatencyUpgrade linux-image-lowlatency-64kUpgrade linux-image-generic-lpae-5.15 | Oct 6, 2026 | Oct 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 15, 2026 | Aug 22, 2026 |
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