VulnerabilityPublished 14 Feb 2026Updated 21 Oct 2026

CVE-2026-23137: Linux kernel · of: unittest: Fix memory leak in unittest_data_add()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f09b0f705bd7197863b90256ef533a6414d1db2c : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Unrated

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f09b0f705bd7197863b90256ef533a6414d1db2c, 235a1eb8d2dcc49a6cf0a5ee1aa85544a5d0054b, 58baf98d1bdab897fd796f39a16061bade229d71 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 14 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 f09b0f705bd7197863b90256ef533a6414d1db2c, 235a1eb8d2dcc49a6cf0a5ee1aa85544a5d0054b, 58baf98d1bdab897fd796f39a16061bade229d71 or 4c7ad40c285ab85e3614433e063f14aac2e2fe17.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 2eb46da2a760e5764c48b752a5ef320e02b96b21, < f09b0f705bd7197863b90256ef533a6414d1db2c	Fixed in f09b0f705bd7197863b90256ef533a6414d1db2c
LinuxLinux	Affected ≥ 2eb46da2a760e5764c48b752a5ef320e02b96b21, < 235a1eb8d2dcc49a6cf0a5ee1aa85544a5d0054b	Fixed in 235a1eb8d2dcc49a6cf0a5ee1aa85544a5d0054b
LinuxLinux	Affected ≥ 2eb46da2a760e5764c48b752a5ef320e02b96b21, < 58baf98d1bdab897fd796f39a16061bade229d71	Fixed in 58baf98d1bdab897fd796f39a16061bade229d71
LinuxLinux	Affected ≥ 2eb46da2a760e5764c48b752a5ef320e02b96b21, < 4c7ad40c285ab85e3614433e063f14aac2e2fe17	Fixed in 4c7ad40c285ab85e3614433e063f14aac2e2fe17
LinuxLinux	Affected =3.18	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: of: unittest: Fix memory leak in unittest_data_add() In unittest_data_add(), if of_resolve_phandles() fails, the allocated unittest_data is not freed, leading to a memory leak. Fix this by using scope-based cleanup helper __free(kfree) for automatic resource cleanup. This ensures unittest_data is automatically freed when it goes out of scope in error paths. For the success path, use retain_and_null_ptr() to transfer ownership of the memory to the device tree and prevent double freeing.

References

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