net/mlx5: fw_tracer, return NULL on create error
Summary
| CVE | CVE-2026-74717 |
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| State | PUBLISHED |
|---|
| Assigner | Linux |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2026-08-22 16:16:46 UTC |
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| Updated | 2026-08-22 16:16:46 UTC |
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| Description | 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 ]--- |
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Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected fd1483fe1f9fd45fe312adffb0faffa57446690d 47fe0d2571e5b446a0f0b0c1d6b99f55e51f5cc0 git |
Not specified |
| CNA |
Linux |
Linux |
affected fd1483fe1f9fd45fe312adffb0faffa57446690d ee41ea49c4ab0e4015919f52ad23ec251d3b39d3 git |
Not specified |
| CNA |
Linux |
Linux |
affected fd1483fe1f9fd45fe312adffb0faffa57446690d 04599570c3a18f9ae7aad36825eb46f3dcd2c4e3 git |
Not specified |
| CNA |
Linux |
Linux |
affected fd1483fe1f9fd45fe312adffb0faffa57446690d 9a416f000285a94c1b723877547981dec8132434 git |
Not specified |
| CNA |
Linux |
Linux |
affected fd1483fe1f9fd45fe312adffb0faffa57446690d b1d6375b9a63c9dc7e5e780d3ea9b126fe30d6cb git |
Not specified |
| CNA |
Linux |
Linux |
affected fd1483fe1f9fd45fe312adffb0faffa57446690d 80094352bd40ba54a33731f9c22872493983ed6d git |
Not specified |
| CNA |
Linux |
Linux |
affected fd1483fe1f9fd45fe312adffb0faffa57446690d 4aafa600d93e9551c1f24e785d57cbd4adf021d5 git |
Not specified |
| CNA |
Linux |
Linux |
affected fd1483fe1f9fd45fe312adffb0faffa57446690d af39eb111ce6b5eba9c08513b62c4868eb7e7fd5 git |
Not specified |
| CNA |
Linux |
Linux |
affected 5.3 |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.3 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.10.265 5.10.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.15.216 5.15.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.1.183 6.1.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.6.152 6.6.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.12.104 6.12.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18.45 6.18.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.1.9 7.1.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.2 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/ee41ea49c4ab0e4015919f52ad23ec251d3b39d3 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/80094352bd40ba54a33731f9c22872493983ed6d |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/b1d6375b9a63c9dc7e5e780d3ea9b126fe30d6cb |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/af39eb111ce6b5eba9c08513b62c4868eb7e7fd5 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/9a416f000285a94c1b723877547981dec8132434 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/47fe0d2571e5b446a0f0b0c1d6b99f55e51f5cc0 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/04599570c3a18f9ae7aad36825eb46f3dcd2c4e3 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/4aafa600d93e9551c1f24e785d57cbd4adf021d5 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.