net/mlx5: fw_tracer, return NULL on create error
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 : 000000
CVE-2026-74717
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-74717
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "fd1483fe1f9fd45fe312adffb0faffa57446690d",
"lessThan": "47fe0d2571e5b446a0f0b0c1d6b99f55e51f5cc0",
"versionType": "git"
},
{
"status": "affected",
"version": "fd1483fe1f9fd45fe312adffb0faffa57446690d",
"lessThan": "ee41ea49c4ab0e4015919f52ad23ec251d3b39d3",
"versionType": "git"
},
{
"status": "affected",
"version": "fd1483fe1f9fd45fe312adffb0faffa57446690d",
"lessThan": "04599570c3a18f9ae7aad36825eb46f3dcd2c4e3",
"versionType": "git"
},
{
"status": "affected",
"version": "fd1483fe1f9fd45fe312adffb0faffa57446690d",
"lessThan": "9a416f000285a94c1b723877547981dec8132434",
"versionType": "git"
},
{
"status": "affected",
"version": "fd1483fe1f9fd45fe312adffb0faffa57446690d",
"lessThan": "b1d6375b9a63c9dc7e5e780d3ea9b126fe30d6cb",
"versionType": "git"
},
{
"status": "affected",
"version": "fd1483fe1f9fd45fe312adffb0faffa57446690d",
"lessThan": "80094352bd40ba54a33731f9c22872493983ed6d",
"versionType": "git"
},
{
"status": "affected",
"version": "fd1483fe1f9fd45fe312adffb0faffa57446690d",
"lessThan": "4aafa600d93e9551c1f24e785d57cbd4adf021d5",
"versionType": "git"
},
{
"status": "affected",
"version": "fd1483fe1f9fd45fe312adffb0faffa57446690d",
"lessThan": "af39eb111ce6b5eba9c08513b62c4868eb7e7fd5",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.152",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.104",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.45",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.9",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74717
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34282 · Revision 1
- Added to Heist Feed
- Publisher date