{"id":"CVE-2026-74717","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: fw_tracer, return NULL on create error\n\nTracer creation can fail by returning either NULL or ERR_PTR.\nThe return value is stored without a check on the device…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: fw_tracer, return NULL on create error\n\nTracer creation can fail by returning either NULL or ERR_PTR.\nThe return value is stored without a check on the device…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","published":"2026-08-22","updated":"2026-10-14","sourceUpdated":"2026-10-14T13:10:00.187","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74717","references":[{"url":"https://git.kernel.org/stable/c/04599570c3a18f9ae7aad36825eb46f3dcd2c4e3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/47fe0d2571e5b446a0f0b0c1d6b99f55e51f5cc0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4aafa600d93e9551c1f24e785d57cbd4adf021d5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/80094352bd40ba54a33731f9c22872493983ed6d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9a416f000285a94c1b723877547981dec8132434","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/af39eb111ce6b5eba9c08513b62c4868eb7e7fd5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b1d6375b9a63c9dc7e5e780d3ea9b126fe30d6cb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ee41ea49c4ab0e4015919f52ad23ec251d3b39d3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00501,"epssPercentile":0.41238,"ingestedAt":"2026-10-14T13:30:58.546Z","slug":"CVE-2026-74717","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: fw_tracer, return NULL on create error\n\nTracer creation can fail by returning either NULL or ERR_PTR.\nThe return value is stored without a check on the device, and users\ntreat ERR_PTR and NULL the same way.\nThis also causes a crash in the core dump logic, which is missing the\nERR_PTR check and ends up dereferencing it, as shown in the trace below.\n\nSwitch tracer creation to return NULL on failure only, so callers only\nneed a single NULL check.\n\n  Internal error: Oops: 0000000096000006 [#1]  SMP\n  Modules linked in: mlx5_ib ib_uverbs ib_core ipv6 mlx5_core\n  CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.19.7 #1 PREEMPT(none)\n  Workqueue: mlx5_health0001:01:00.0 mlx5_fw_reporter_err_work [mlx5_core]\n  pstate: a3400009 (NzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)\n  pc : mlx5_fw_tracer_trigger_core_dump_general+0x58/0xe0 [mlx5_core]\n  lr : mlx5_fw_tracer_trigger_core_dump_general+0x40/0xe0 [mlx5_core]\n  sp : ffff800081cf3c40\n  x29: ffff800081cf3c90 x28: 0000000000000000 x27: 0000000000000000\n  x26: ffff000080018828 x25: 0000000000000000 x24: ffff000080304a05\n  x23: ffff800081cf3d80 x22: ffff0000847e01a0 x21: 0000000000000000\n  x20: ffff0000847e01a0 x19: ffffffffffffffa1 x18: ffff80008310bbf0\n  x17: ffff800080119650 x16: ffff80008010df54 x15: ffff80008010d4ac\n  x14: ffff800079c202e4 x13: ffff80008002fe60 x12: ffff800080119650\n  x11: ffff80008010df54 x10: ffff80008010d4ac x9 : ffff800079c203d8\n  x8 : ffff800081cf3c88 x7 : 0000000000000000 x6 : 0000000000000000\n  x5 : 0000000000000000 x4 : 0000000000000008 x3 : 0000000000000030\n  x2 : 0000000000000008 x1 : 0000000000000000 x0 : 00000000c5c4000e\n  Call trace:\n   mlx5_fw_tracer_trigger_core_dump_general+0x58/0xe0 [mlx5_core] (P)\n   mlx5_fw_reporter_dump+0x30/0x2e0 [mlx5_core]\n   devlink_health_do_dump+0x9c/0x160\n   devlink_health_report+0x1c0/0x288\n   mlx5_fw_reporter_err_work+0xac/0xc0 [mlx5_core]\n   process_one_work+0x15c/0x3d8\n   worker_thread+0x18c/0x320\n   kthread+0x148/0x228\n   ret_from_fork+0x10/0x20\n  Code: b9400000 5ac00800 7a401800 540003ca (3940a260)\n  ---[ end trace 0000000000000000 ]---\n  Kernel panic - not syncing: Oops: Fatal exception\n  SMP: stopping secondary CPUs\n  Kernel Offset: disabled\n  CPU features: 0x000000,00078031,75fce5a1,35fffe67\n  Memory Limit: none\n  ---[ end Kernel panic - not syncing: Oops: Fatal exception ]---\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}