High

CVE-2026-74519 — 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.

Published Aug 15, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

—

No EPSS score.

Affects

Linux

CVSS base

7.8

High · 2 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	version 77440c3a37203e3f4667d06e37f76ef3968d2d8cversion 5.5≥ 5.4.7 and < 5.5≥ 4.19.92 and < 4.20≥ 4.14.161 and < 4.15≥ 4.9.244 and < 4.10≥ 4.4.244 and < 4.5version f739a699db7d5a5cf39ca3ce2c84e4fe4a8f4c5d and 11 more version f88ac1330779c5bfdd79f7d7f7d4d3343c782f92version 679c4f27b8958b65bb51d1c3dfdbf3befe4a33a3≥ be4c60b563edee3712d392aaeb0943a768df7023 and < e3cfb22bad363bebcfd55d909e12d499cb8c5490version 03f69244302d7954f42f528ea2d45903ebbf59f3≥ be4c60b563edee3712d392aaeb0943a768df7023 and < 015b5bcbcb622b32317642be91a7f79aa5413649≥ be4c60b563edee3712d392aaeb0943a768df7023 and < 9d00a5ac7cd3d32ae61140f4b8a62f136de84e7d≥ be4c60b563edee3712d392aaeb0943a768df7023 and < ad0ad3c228b6f76fde10f32047e0ec5fbc109dc8≥ be4c60b563edee3712d392aaeb0943a768df7023 and < 321fe3584a8298386938130d138191aa35040b75≥ be4c60b563edee3712d392aaeb0943a768df7023 and < 929f6396baade89999ec8a1281232c101cbc727d≥ be4c60b563edee3712d392aaeb0943a768df7023 and < dec5f0a8080502908dec5e35597c7ae07d533a3b≥ be4c60b563edee3712d392aaeb0943a768df7023 and < 1586423da2739a80871ef6240016fcb9c7339bfb	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.8	CVSS 3.1	High	1.8	5.9	416baaa9-dc9f-4396-8d5f-8c081fb06d67 via NIST National Vulnerability Database
7.8	CVSS 3.1	High	—	—	Linux via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: 416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 7.8
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 15, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

git.kernel.org/stable/c/1586423da2739a80871ef6240016fcb9c7339bfb
NIST National Vulnerability Database
git.kernel.org/stable/c/dec5f0a8080502908dec5e35597c7ae07d533a3b
NIST National Vulnerability Database
git.kernel.org/stable/c/ad0ad3c228b6f76fde10f32047e0ec5fbc109dc8
NIST National Vulnerability Database
git.kernel.org/stable/c/015b5bcbcb622b32317642be91a7f79aa5413649
NIST National Vulnerability Database
git.kernel.org/stable/c/929f6396baade89999ec8a1281232c101cbc727d
NIST National Vulnerability Database
git.kernel.org/stable/c/e3cfb22bad363bebcfd55d909e12d499cb8c5490
NIST National Vulnerability Database
git.kernel.org/stable/c/321fe3584a8298386938130d138191aa35040b75
NIST National Vulnerability Database
git.kernel.org/stable/c/9d00a5ac7cd3d32ae61140f4b8a62f136de84e7d
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 12h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 12h
Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No FIRST EPSS score.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-74519 is "pinctrl: devicetree: don't free uninitialized dev_name on error path", rated High. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.8 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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