CVE-2026-23260: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

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 products

• Linux Linux Kernel: from 6.4, before 6.6.124 (fixed in 6.6.124); from 6.7, before 6.12.70 (fixed in 6.12.70); from 6.13, before 6.18.10 (fixed in 6.18.10); version 6.19 only

Published 2026-03-18. Last modified 2026-06-17.