pinctrl: devicetree: don't free uninitialized dev_name on error path
In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: don't free uninitialized dev_name on error path dt_remember_or_free_map() duplicates dev_name for each map entry. If kstrdup_const() fails, dt_free_map() frees dev_name in all num_maps entries, including entries that have not been initialized. Some pinctrl drivers, including pinctrl-imx, allocate the map with kmalloc() and leave dev_name for the core to initialize. The untouched entries therefore contain uninitialized data which is passed to kfree_const(). Reproduced on qemu's mcimx6ul-evk (pinctrl-imx) with failslab injection while binding the pinctrl-consuming device, under KASAN: BUG: KASAN: double-free in dt_free_map+0x34/0xa4 Free of addr c425a900 by task init/1 kfree from dt_free_map+0x34/0xa4 dt_free_map from dt_remember_or_free_map+0x184/0x198 dt_remember_or_free_map from pinctrl_dt_to_map+0x33c/0x4c8 pinctrl_dt_to_map from create_pinctrl+0x9c/0x5c0 Initialize all dev_name fields to NULL before duplicating the device name, making the full-map cleanup safe after a partial failure.
CVE-2026-74519
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-2026-74519
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": "be4c60b563edee3712d392aaeb0943a768df7023",
"lessThan": "e3cfb22bad363bebcfd55d909e12d499cb8c5490",
"versionType": "git"
},
{
"status": "affected",
"version": "be4c60b563edee3712d392aaeb0943a768df7023",
"lessThan": "1586423da2739a80871ef6240016fcb9c7339bfb",
"versionType": "git"
},
{
"status": "affected",
"version": "be4c60b563edee3712d392aaeb0943a768df7023",
"lessThan": "dec5f0a8080502908dec5e35597c7ae07d533a3b",
"versionType": "git"
},
{
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"lessThan": "929f6396baade89999ec8a1281232c101cbc727d",
"versionType": "git"
},
{
"status": "affected",
"version": "be4c60b563edee3712d392aaeb0943a768df7023",
"lessThan": "321fe3584a8298386938130d138191aa35040b75",
"versionType": "git"
},
{
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"lessThan": "ad0ad3c228b6f76fde10f32047e0ec5fbc109dc8",
"versionType": "git"
},
{
"status": "affected",
"version": "be4c60b563edee3712d392aaeb0943a768df7023",
"lessThan": "9d00a5ac7cd3d32ae61140f4b8a62f136de84e7d",
"versionType": "git"
},
{
"status": "affected",
"version": "be4c60b563edee3712d392aaeb0943a768df7023",
"lessThan": "015b5bcbcb622b32317642be91a7f79aa5413649",
"versionType": "git"
},
{
"status": "affected",
"version": "03f69244302d7954f42f528ea2d45903ebbf59f3",
"versionType": "git"
},
{
"status": "affected",
"version": "77440c3a37203e3f4667d06e37f76ef3968d2d8c",
"versionType": "git"
},
{
"status": "affected",
"version": "679c4f27b8958b65bb51d1c3dfdbf3befe4a33a3",
"versionType": "git"
},
{
"status": "affected",
"version": "f88ac1330779c5bfdd79f7d7f7d4d3343c782f92",
"versionType": "git"
},
{
"status": "affected",
"version": "f739a699db7d5a5cf39ca3ce2c84e4fe4a8f4c5d",
"versionType": "git"
},
{
"status": "affected",
"version": "4.4.244",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.9.244",
"lessThan": "4.10",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.14.161",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.92",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.7",
"lessThan": "5.5",
"versionType": "semver"
}
],
"programFiles": [
"drivers/pinctrl/devicetree.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.5",
"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": "6.6.151",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.103",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/pinctrl/devicetree.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74519
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33193 · Revision 1
- Added to Heist Feed
- Publisher date