CVE-2026-23019 (GCVE-0-2026-23019)
Vulnerability from cvelistv5 – Published: 2026-01-31 11:39 – Updated: 2026-01-31 11:39
VLAI?
Title
net: marvell: prestera: fix NULL dereference on devlink_alloc() failure
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: marvell: prestera: fix NULL dereference on devlink_alloc() failure
devlink_alloc() may return NULL on allocation failure, but
prestera_devlink_alloc() unconditionally calls devlink_priv() on
the returned pointer.
This leads to a NULL pointer dereference if devlink allocation fails.
Add a check for a NULL devlink pointer and return NULL early to avoid
the crash.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 8a4333b2818f0d853b43e139936c20659366e4a0
(git)
Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 325aea74be7e192b5c947c782da23b0d19a5fda2 (git) Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 94e070cd50790317fba7787ae6006934b7edcb6f (git) Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 3950054c9512add0cc79ab7e72b6d2f9f675e25b (git) Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 326a4b7e61d01db3507f71c8bb5e85362f607064 (git) Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < a428e0da1248c353557970848994f35fd3f005e2 (git) |
|||||||
|
|||||||||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/marvell/prestera/prestera_devlink.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "8a4333b2818f0d853b43e139936c20659366e4a0",
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"versionType": "git"
},
{
"lessThan": "325aea74be7e192b5c947c782da23b0d19a5fda2",
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"versionType": "git"
},
{
"lessThan": "94e070cd50790317fba7787ae6006934b7edcb6f",
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"versionType": "git"
},
{
"lessThan": "3950054c9512add0cc79ab7e72b6d2f9f675e25b",
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"versionType": "git"
},
{
"lessThan": "326a4b7e61d01db3507f71c8bb5e85362f607064",
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"versionType": "git"
},
{
"lessThan": "a428e0da1248c353557970848994f35fd3f005e2",
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/marvell/prestera/prestera_devlink.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.10"
},
{
"lessThan": "5.10",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.161",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.121",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.66",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19-rc5",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.198",
"versionStartIncluding": "5.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.161",
"versionStartIncluding": "5.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.121",
"versionStartIncluding": "5.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.66",
"versionStartIncluding": "5.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.6",
"versionStartIncluding": "5.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19-rc5",
"versionStartIncluding": "5.10",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: marvell: prestera: fix NULL dereference on devlink_alloc() failure\n\ndevlink_alloc() may return NULL on allocation failure, but\nprestera_devlink_alloc() unconditionally calls devlink_priv() on\nthe returned pointer.\n\nThis leads to a NULL pointer dereference if devlink allocation fails.\nAdd a check for a NULL devlink pointer and return NULL early to avoid\nthe crash."
}
],
"providerMetadata": {
"dateUpdated": "2026-01-31T11:39:03.179Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/8a4333b2818f0d853b43e139936c20659366e4a0"
},
{
"url": "https://git.kernel.org/stable/c/325aea74be7e192b5c947c782da23b0d19a5fda2"
},
{
"url": "https://git.kernel.org/stable/c/94e070cd50790317fba7787ae6006934b7edcb6f"
},
{
"url": "https://git.kernel.org/stable/c/3950054c9512add0cc79ab7e72b6d2f9f675e25b"
},
{
"url": "https://git.kernel.org/stable/c/326a4b7e61d01db3507f71c8bb5e85362f607064"
},
{
"url": "https://git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2"
}
],
"title": "net: marvell: prestera: fix NULL dereference on devlink_alloc() failure",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23019",
"datePublished": "2026-01-31T11:39:03.179Z",
"dateReserved": "2026-01-13T15:37:45.940Z",
"dateUpdated": "2026-01-31T11:39:03.179Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-23019\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-01-31T12:16:05.207\",\"lastModified\":\"2026-01-31T12:16:05.207\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: marvell: prestera: fix NULL dereference on devlink_alloc() failure\\n\\ndevlink_alloc() may return NULL on allocation failure, but\\nprestera_devlink_alloc() unconditionally calls devlink_priv() on\\nthe returned pointer.\\n\\nThis leads to a NULL pointer dereference if devlink allocation fails.\\nAdd a check for a NULL devlink pointer and return NULL early to avoid\\nthe crash.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/325aea74be7e192b5c947c782da23b0d19a5fda2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/326a4b7e61d01db3507f71c8bb5e85362f607064\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3950054c9512add0cc79ab7e72b6d2f9f675e25b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8a4333b2818f0d853b43e139936c20659366e4a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/94e070cd50790317fba7787ae6006934b7edcb6f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…