VulnerabilityPublished 25 Sep 2026Updated 19 Oct 2026

CVE-2026-97550: Linux kernel · xfs: fix unit conversions in per_binval computation

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in cfeba3bdf4dfa405e29f4ee13a20e9063fd0b7ef : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% 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 cfeba3bdf4dfa405e29f4ee13a20e9063fd0b7ef, b5089a328acc83fe2f23127a79397a0bfd9ebc33, 05cff7c2b79f76c7cfe90613a60e16aaaa051ef7

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 cfeba3bdf4dfa405e29f4ee13a20e9063fd0b7ef, b5089a328acc83fe2f23127a79397a0bfd9ebc33 or 05cff7c2b79f76c7cfe90613a60e16aaaa051ef7.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ b2311ec6778fcde9d40cd9e22899f8bd594d8465, < cfeba3bdf4dfa405e29f4ee13a20e9063fd0b7ef	Fixed in cfeba3bdf4dfa405e29f4ee13a20e9063fd0b7ef
LinuxLinux	Affected ≥ b2311ec6778fcde9d40cd9e22899f8bd594d8465, < b5089a328acc83fe2f23127a79397a0bfd9ebc33	Fixed in b5089a328acc83fe2f23127a79397a0bfd9ebc33
LinuxLinux	Affected ≥ b2311ec6778fcde9d40cd9e22899f8bd594d8465, < 05cff7c2b79f76c7cfe90613a60e16aaaa051ef7	Fixed in 05cff7c2b79f76c7cfe90613a60e16aaaa051ef7
LinuxLinux	Affected =6.18	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: xfs: fix unit conversions in per_binval computation LOLLM noticed that we're doing the unit conversion in the per_binval computation backwards -- xfs_buf_inval_log_space's second parameter is supposed to be in bytes, but max_binval is in units of fsblocks. Hence the conversion should be FSB -> B, not the other way around.

References

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