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 ]---

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
fd1483fe1f9fd45fe312adffb0faffa57446690d affected < 47fe0d2571e5b446a0f0b0c1d6b99f55e51f5cc0
fd1483fe1f9fd45fe312adffb0faffa57446690d affected < ee41ea49c4ab0e4015919f52ad23ec251d3b39d3
fd1483fe1f9fd45fe312adffb0faffa57446690d affected < 04599570c3a18f9ae7aad36825eb46f3dcd2c4e3
fd1483fe1f9fd45fe312adffb0faffa57446690d affected < 9a416f000285a94c1b723877547981dec8132434
fd1483fe1f9fd45fe312adffb0faffa57446690d affected < b1d6375b9a63c9dc7e5e780d3ea9b126fe30d6cb
fd1483fe1f9fd45fe312adffb0faffa57446690d affected < 80094352bd40ba54a33731f9c22872493983ed6d
fd1483fe1f9fd45fe312adffb0faffa57446690d affected < 4aafa600d93e9551c1f24e785d57cbd4adf021d5
fd1483fe1f9fd45fe312adffb0faffa57446690d affected < af39eb111ce6b5eba9c08513b62c4868eb7e7fd5
Linux Linux affected
Version Status Constraints
5.3 affected —
0 unaffected < 5.3
5.10.265 unaffected ≤ 5.10.*
5.15.216 unaffected ≤ 5.15.*
6.1.183 unaffected ≤ 6.1.*
6.6.152 unaffected ≤ 6.6.*
6.12.104 unaffected ≤ 6.12.*
6.18.45 unaffected ≤ 6.18.*
7.1.9 unaffected ≤ 7.1.*
7.2 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/04599570c3a18f9ae7aad36825eb46f3dcd2c4e3 cve-icon cve-icon
https://git.kernel.org/stable/c/47fe0d2571e5b446a0f0b0c1d6b99f55e51f5cc0 cve-icon cve-icon
https://git.kernel.org/stable/c/4aafa600d93e9551c1f24e785d57cbd4adf021d5 cve-icon cve-icon
https://git.kernel.org/stable/c/80094352bd40ba54a33731f9c22872493983ed6d cve-icon cve-icon
https://git.kernel.org/stable/c/9a416f000285a94c1b723877547981dec8132434 cve-icon cve-icon
https://git.kernel.org/stable/c/af39eb111ce6b5eba9c08513b62c4868eb7e7fd5 cve-icon cve-icon
https://git.kernel.org/stable/c/b1d6375b9a63c9dc7e5e780d3ea9b126fe30d6cb cve-icon cve-icon
https://git.kernel.org/stable/c/ee41ea49c4ab0e4015919f52ad23ec251d3b39d3 cve-icon cve-icon
History

Sat, 22 Aug 2026 18:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476

Sat, 22 Aug 2026 15:45:00 +0000

Type Values Removed Values Added
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 ]---
Title net/mlx5: fw_tracer, return NULL on create error
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-22T15:33:11.488Z

Reserved: 2026-08-15T05:44:03.928Z

Link: CVE-2026-74717

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-22T16:16:46.570

Modified: 2026-08-22T16:16:46.570

Link: CVE-2026-74717

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-22T18:30:16Z

Weaknesses