CVE-2026-23260

regmap: maple: free entry on mas_store_gfp() failure

MEDIUM

5.5

CVSS Score

Published: March 18, 2026 at 05:41 PM UTC

Updated: June 17, 2026 at 10:21 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: regmap: maple: free entry on mas_store_gfp() failure regcache_maple_write() allocates a new block ('entry') to merge adjacent ranges and then stores it with mas_store_gfp(). When mas_store_gfp() fails, the new 'entry' remains allocated and is never freed, leaking memory. Free 'entry' on the failure path; on success continue freeing the replaced neighbor blocks ('lower', 'upper').

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

6.13 ≤ v < 6.18.106.4 ≤ v < 6.12.706.4 ≤ v < 6.18.106.4 ≤ v < 6.196.4 ≤ v < 6.6.1246.7 ≤ v < 6.12.706.19 rc1 6.19 rc2 6.19 rc3 6.19 rc4 6.19 rc5 6.19 rc6 6.4f033c26de5a5734625d2dd1dc196745fae186f1b

Vendor states this is fixed in 811b45e2d795d955bb7fd9c816b40036f4fde350 (fixed)

Vendor states this is fixed in d61171cf097156030142643942c217759a9cc806 (fixed)

Vendor states this is fixed in f08f2d2907675926ac5657b25f86d921f269602a (fixed)

Vendor states this is fixed in f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8 (fixed)

Vendor states this is fixed in 6.12.70 (unaffected)

Vendor states this is fixed in 6.18.10 (unaffected)

Vendor states this is fixed in 6.19 (unaffected)

Vendor states this is fixed in 6.4 (unaffected)

Vendor states this is fixed in 6.6.124 (unaffected)