CVE-2026-74519: pinctrl: devicetree: don't free uninitialized dev_name on error path
Vulnerability summary
CVE-2026-74519 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.8% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 11Timeline
- 15-08-2026PublishedVulnerability first disclosed.
- 16-10-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.15%
Chance of exploitation in the next 30 days
Percentile
4%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.15% on 06-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu169 products
- linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 7.0.0-42.42
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 7.0.0-1016.17
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.8-1
- linux-6.12< 6.12.107-1~deb12u1
Linux1 product
- linux≥ be4c60b563edee3712d392aaeb0943a768df7023, < e3cfb22bad363bebcfd55d909e12d499cb8c5490 | ≥ be4c60b563edee3712d392aaeb0943a768df7023, < 1586423da2739a80871ef6240016fcb9c7339bfb | ≥ be4c60b563edee3712d392aaeb0943a768df7023, < dec5f0a8080502908dec5e35597c7ae07d533a3b | ≥ be4c60b563edee3712d392aaeb0943a768df7023, < 929f6396baade89999ec8a1281232c101cbc727d | ≥ be4c60b563edee3712d392aaeb0943a768df7023, < 321fe3584a8298386938130d138191aa35040b75 | ≥ be4c60b563edee3712d392aaeb0943a768df7023, < ad0ad3c228b6f76fde10f32047e0ec5fbc109dc8 | ≥ be4c60b563edee3712d392aaeb0943a768df7023, < 9d00a5ac7cd3d32ae61140f4b8a62f136de84e7d | ≥ be4c60b563edee3712d392aaeb0943a768df7023, < 015b5bcbcb622b32317642be91a7f79aa5413649 | 03f69244302d7954f42f528ea2d45903ebbf59f3 | 77440c3a37203e3f4667d06e37f76ef3968d2d8c | 679c4f27b8958b65bb51d1c3dfdbf3befe4a33a3 | f88ac1330779c5bfdd79f7d7f7d4d3343c782f92 | f739a699db7d5a5cf39ca3ce2c84e4fe4a8f4c5d | ≥ 4.4.244, < 4.5 | ≥ 4.9.244, < 4.10 | ≥ 4.14.161, < 4.15 | ≥ 4.19.92, < 4.20 | ≥ 5.4.7, < 5.5 | 5.5
3 vendors · 172 products
