VulnerabilityPublished 18 Mar 2026Updated 5 Nov 2026

CVE-2026-23260: Linux kernel · regmap: maple: free entry on mas_store_gfp() failure

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in f08f2d2907675926ac5657b25f86d921f269602a : update Linux kernel when convenient.

Data as of 5 Nov 2026, 22:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in f08f2d2907675926ac5657b25f86d921f269602a, f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8, d61171cf097156030142643942c217759a9cc806 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to f08f2d2907675926ac5657b25f86d921f269602a, f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8, d61171cf097156030142643942c217759a9cc806 or 811b45e2d795d955bb7fd9c816b40036f4fde350.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ f033c26de5a5734625d2dd1dc196745fae186f1b, < f08f2d2907675926ac5657b25f86d921f269602a	Fixed in f08f2d2907675926ac5657b25f86d921f269602a
LinuxLinux	Affected ≥ f033c26de5a5734625d2dd1dc196745fae186f1b, < f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8	Fixed in f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8
LinuxLinux	Affected ≥ f033c26de5a5734625d2dd1dc196745fae186f1b, < d61171cf097156030142643942c217759a9cc806	Fixed in d61171cf097156030142643942c217759a9cc806
LinuxLinux	Affected ≥ f033c26de5a5734625d2dd1dc196745fae186f1b, < 811b45e2d795d955bb7fd9c816b40036f4fde350	Fixed in 811b45e2d795d955bb7fd9c816b40036f4fde350
LinuxLinux	Affected =6.4	Fixed in–

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').

References

Community reviews

Loading reviews…