Kernel regmap maple memory leak on mas_store_gfp() failure
CVE-2026-23260 Published on March 18, 2026
regmap: maple: free entry on mas_store_gfp() failure
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').
Products Associated with CVE-2026-23260
stack.watch emails you whenever new vulnerabilities are published in Linux Kernel or Canonical Ubuntu Linux. Just hit a watch button to start following.
Affected Versions
Linux:- Version f033c26de5a5734625d2dd1dc196745fae186f1b and below d61171cf097156030142643942c217759a9cc806 is affected.
- Version f033c26de5a5734625d2dd1dc196745fae186f1b and below 811b45e2d795d955bb7fd9c816b40036f4fde350 is affected.
- Version f033c26de5a5734625d2dd1dc196745fae186f1b and below f08f2d2907675926ac5657b25f86d921f269602a is affected.
- Version f033c26de5a5734625d2dd1dc196745fae186f1b and below f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8 is affected.
- Version 6.4 is affected.
- Before 6.4 is unaffected.
- Version 6.6.124, <= 6.6.* is unaffected.
- Version 6.12.70, <= 6.12.* is unaffected.
- Version 6.18.10, <= 6.18.* is unaffected.
- Version 6.19, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.