VulnerabilityPublished 23 Oct 2026

CVE-2026-98880: Linux kernel · ntfs3: handle set_blocksize failures

Source GCVE Database

Authoritative record:CVE-2026-98880· Medium

Not known to be exploited · fixed in df9dac4dbe557f6455a61e68cc09ef98b22f3686 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in df9dac4dbe557f6455a61e68cc09ef98b22f3686, c5b8a7ec9a0a71518915c82b8552be1ccbb88288, 78e10082f3e919b8863958feac5f269d3ade9469 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Oct 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.

ghsa-h77q-v24c-72pv

What to do

Upgrade Linux kernel to df9dac4dbe557f6455a61e68cc09ef98b22f3686, c5b8a7ec9a0a71518915c82b8552be1ccbb88288, 78e10082f3e919b8863958feac5f269d3ade9469 or 24f7d1824b7581ae3daf9d443c5dfeabd89df6d8.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < df9dac4dbe557f6455a61e68cc09ef98b22f3686	Fixed in df9dac4dbe557f6455a61e68cc09ef98b22f3686
LinuxLinux	Affected ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < c5b8a7ec9a0a71518915c82b8552be1ccbb88288	Fixed in c5b8a7ec9a0a71518915c82b8552be1ccbb88288
LinuxLinux	Affected ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 78e10082f3e919b8863958feac5f269d3ade9469	Fixed in 78e10082f3e919b8863958feac5f269d3ade9469
LinuxLinux	Affected ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 24f7d1824b7581ae3daf9d443c5dfeabd89df6d8	Fixed in 24f7d1824b7581ae3daf9d443c5dfeabd89df6d8
LinuxLinux	Affected =5.15	Fixed in–

AI-suggested

A fix for this vulnerability has been implemented in the Linux kernel. Users should update to a kernel version that includes this fix to prevent the issue. Patch status is not explicitly confirmed in the provided data; therefore, verify the vendor advisory for the exact fixed kernel version and apply the update accordingly.

Description

A vulnerability in the Linux kernel's ntfs3 driver related to improper handling of set_blocksize failures has been resolved. The ntfs3 driver uses buffer_heads, which do not handle block sizes larger than PAGE_SIZE correctly. This can cause a kernel BUG_ON failure during mounting due to an invalid offset check in folio_set_bh on the first __bread_gfp call.

References

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