VulnerabilityPublished 25 Sep 2026Updated 19 Oct 2026

CVE-2026-97543: Linux kernel · xfs: destroy seen inode bitmap when we fail to add a dirpath

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 582f54dce62043f7a0503ab8c76d718d0293da59 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:44 UTC

Severity

Low

Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 582f54dce62043f7a0503ab8c76d718d0293da59, 3b10ca4302ee2dda4233f70b2033883ee376fa6a, 1a441c6842da75c5b862cc1c9f7969d6a93b54b9 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 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 582f54dce62043f7a0503ab8c76d718d0293da59, 3b10ca4302ee2dda4233f70b2033883ee376fa6a, 1a441c6842da75c5b862cc1c9f7969d6a93b54b9 or 0b756de8167f2f06ffceadc71cb17c1fc7be4be8.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 928b721a11789a9363d6d7c32a1f3166a79f3b5f, < 582f54dce62043f7a0503ab8c76d718d0293da59	Fixed in 582f54dce62043f7a0503ab8c76d718d0293da59
LinuxLinux	Affected ≥ 928b721a11789a9363d6d7c32a1f3166a79f3b5f, < 3b10ca4302ee2dda4233f70b2033883ee376fa6a	Fixed in 3b10ca4302ee2dda4233f70b2033883ee376fa6a
LinuxLinux	Affected ≥ 928b721a11789a9363d6d7c32a1f3166a79f3b5f, < 1a441c6842da75c5b862cc1c9f7969d6a93b54b9	Fixed in 1a441c6842da75c5b862cc1c9f7969d6a93b54b9
LinuxLinux	Affected ≥ 928b721a11789a9363d6d7c32a1f3166a79f3b5f, < 0b756de8167f2f06ffceadc71cb17c1fc7be4be8	Fixed in 0b756de8167f2f06ffceadc71cb17c1fc7be4be8
LinuxLinux	Affected =6.10	Fixed in–

AI-suggested

A fix has been applied in the Linux kernel source as indicated by the fixed commit versions. Users should update to the patched kernel versions to remediate this issue. No additional mitigation steps are required beyond applying the official fix.

Description

A memory leak vulnerability in the Linux kernel's XFS filesystem was fixed. The issue occurs when creating a directory path object fails to append the name, causing the seen inode bitmap not to be destroyed properly. This flaw could lead to resource leakage but does not indicate direct exploitation or system compromise.

Impact

The vulnerability causes a memory leak in the kernel's XFS filesystem code when directory path creation fails. There is no indication of direct exploitation or security compromise, but the leak could degrade system stability or performance over time if triggered repeatedly.

Summary

CVE-2026-97543 addresses a memory leak in the Linux kernel's XFS filesystem code. Specifically, in the function xchk_dirtree_create_path, if the directory path object is created but appending the name to the path fails, the seen inode bitmap is not properly destroyed, resulting in a memory leak. A similar fix was applied to xrep_dirtree_create_adoption_path. The vulnerability is considered a trivial error but was corrected to prevent potential logic bombs in the kernel.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 13:44 UTC

Technical details

References

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