net: marvell: prestera: fix NULL dereference on devlink_alloc() failure
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.
CVE-2026-23019
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-2026-23019
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": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"lessThan": "8a4333b2818f0d853b43e139936c20659366e4a0",
"versionType": "git"
},
{
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"lessThan": "325aea74be7e192b5c947c782da23b0d19a5fda2",
"versionType": "git"
},
{
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"lessThan": "94e070cd50790317fba7787ae6006934b7edcb6f",
"versionType": "git"
},
{
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"lessThan": "3950054c9512add0cc79ab7e72b6d2f9f675e25b",
"versionType": "git"
},
{
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"lessThan": "326a4b7e61d01db3507f71c8bb5e85362f607064",
"versionType": "git"
},
{
"status": "affected",
"version": "34dd1710f5a3c9a7dc78e1ff6de69a19d407db25",
"lessThan": "a428e0da1248c353557970848994f35fd3f005e2",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/marvell/prestera/prestera_devlink.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.161",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.121",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.66",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.6",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/marvell/prestera/prestera_devlink.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23019
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27195 · Revision 1
- Added to Heist Feed
- Publisher date