VulnerabilityPublished 25 Sep 2026Updated 19 Oct 2026

CVE-2026-97545: Linux kernel · xfs: don't leak new_bp if xfs_btree_bload_drop_buf fails

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f1930bc578095409c2dcfca6e4e898b24f0f0de6 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:43 UTC

Severity

Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f1930bc578095409c2dcfca6e4e898b24f0f0de6, b19dfd4546088a0823e0c47f8ceb6b2775bd1ac7, 355b8a5d7e9a38fca8dbf7a4721450252ac7868f +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 f1930bc578095409c2dcfca6e4e898b24f0f0de6, b19dfd4546088a0823e0c47f8ceb6b2775bd1ac7, 355b8a5d7e9a38fca8dbf7a4721450252ac7868f or 176a53af77b430e1c19ee15fc492145ace666de7.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ e069d549705e49841247acf9b3176744e27d5425, < f1930bc578095409c2dcfca6e4e898b24f0f0de6	Fixed in f1930bc578095409c2dcfca6e4e898b24f0f0de6
LinuxLinux	Affected ≥ e069d549705e49841247acf9b3176744e27d5425, < b19dfd4546088a0823e0c47f8ceb6b2775bd1ac7	Fixed in b19dfd4546088a0823e0c47f8ceb6b2775bd1ac7
LinuxLinux	Affected ≥ e069d549705e49841247acf9b3176744e27d5425, < 355b8a5d7e9a38fca8dbf7a4721450252ac7868f	Fixed in 355b8a5d7e9a38fca8dbf7a4721450252ac7868f
LinuxLinux	Affected ≥ e069d549705e49841247acf9b3176744e27d5425, < 176a53af77b430e1c19ee15fc492145ace666de7	Fixed in 176a53af77b430e1c19ee15fc492145ace666de7
LinuxLinux	Affected =6.8	Fixed in–

AI-suggested

The issue has been fixed in the Linux kernel source code as indicated by the provided commit hashes. Users should update to a kernel version that includes these fixes, such as version 6.8 or later containing the referenced commits. No additional mitigation is required beyond applying the official fix.

Description

A vulnerability in the Linux kernel's XFS filesystem code could cause a locked buffer to be leaked if an IO error occurs during buffer list write operations. This issue has been fixed in specific commits.

Impact

If triggered, this vulnerability causes a locked buffer to be leaked in the kernel, which could lead to resource exhaustion or stability issues in the filesystem. There is no indication of remote code execution or privilege escalation. No known exploits in the wild have been reported.

Summary

CVE-2026-97545 addresses a resource leak in the Linux kernel's XFS filesystem. Specifically, in the function xfs_btree_bload_prep_block, if the call to xfs_btree_bload_drop_buf fails due to an IO error when writing the delayed write buffer list to disk, the new_bp buffer is not released, resulting in a locked buffer leak. This flaw has been corrected in several commits identified by their hashes.

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 13:43 UTC

Technical details

References

Community reviews

Related threats