Strix
57.7K

CVE-2026-74519

HIGHCVSS 7.8/10EPSS 0.14%

Last modified

CVE-2026-74519 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.14%

4.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 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
LinuxLinux5.5

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74519?
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.
How severe is CVE-2026-74519?
CVE-2026-74519 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74519?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-74519?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST