CVE-2026-23434

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Source
https://cve.org/CVERecord?id=CVE-2026-23434
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23434.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23434
Downstream
Related
Published
2026-04-03T15:15:19.450Z
Modified
2026-06-04T09:14:15.923769132Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
mtd: rawnand: serialize lock/unlock against other NAND operations
Details

In the Linux kernel, the following vulnerability has been resolved:

mtd: rawnand: serialize lock/unlock against other NAND operations

nandlock() and nandunlock() call into chip->ops.lockarea/unlockarea without holding the NAND device lock. On controllers that implement SETFEATURES via multiple low-level PIO commands, these can race with concurrent UBI/UBIFS background erase/write operations that hold the device lock, resulting in cmdpending conflicts on the NAND controller.

Add nandgetdevice()/nandreleasedevice() around the lock/unlock operations to serialize them against all other NAND controller access.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23434.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
92270086b7e5ada7ab381c06cc3da2e95ed17088
Fixed
28ea836cc44cb8b89c1c174707ead0c1133c60e9
Fixed
fe4a73c3dd48308149d57a10c2761e1d36ced7ba
Fixed
ce5229e78078e437704157eb542f43a6f83b429b
Fixed
a80291e577b44593a724d6cd64c14337c78f194d
Fixed
f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2
Fixed
5fd5c078af23cb353507aa522e09d557d7eaef04
Fixed
f25446e2c28939753d3b62d34dfda49952b2557d
Fixed
bab2bc6e850a697a23b9e5f0e21bb8c187615e95

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23434.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.7.0
Fixed
5.10.253
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.203
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.167
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.130
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.78
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.20
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.10

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23434.json"