VulnerabilityPublished 6 May 2026Updated 6 Nov 2026

CVE-2026-43262: Linux kernel · gfs2: fiemap page fault fix

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e428670cfb2993d8c224effd076242ca6b0950de : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:49 UTC

Severity

Unrated

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

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in e428670cfb2993d8c224effd076242ca6b0950de, e411d74cc5ba290f85d0dd5e4d1df8f1d6d975d2, cead3bebf3e318578b8a86a5472015d713d2a8a8 +4

Exploitation evidence

Disclosed: evidence found.
CVE published 6 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 6 Nov 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ e9079cce201784632aed4b1a3121ee38c1ced0b6, < e428670cfb2993d8c224effd076242ca6b0950de	Fixed in e428670cfb2993d8c224effd076242ca6b0950de
LinuxLinux	Affected ≥ e9079cce201784632aed4b1a3121ee38c1ced0b6, < e411d74cc5ba290f85d0dd5e4d1df8f1d6d975d2	Fixed in e411d74cc5ba290f85d0dd5e4d1df8f1d6d975d2
LinuxLinux	Affected ≥ e9079cce201784632aed4b1a3121ee38c1ced0b6, < cead3bebf3e318578b8a86a5472015d713d2a8a8	Fixed in cead3bebf3e318578b8a86a5472015d713d2a8a8
LinuxLinux	Affected ≥ e9079cce201784632aed4b1a3121ee38c1ced0b6, < 9d15fee888f0e8938c9aeed71ec9c2cbba0c88ab	Fixed in 9d15fee888f0e8938c9aeed71ec9c2cbba0c88ab
LinuxLinux	Affected ≥ e9079cce201784632aed4b1a3121ee38c1ced0b6, < 5d5d9ec957bfa1eb2b05861c19f5d701dd006db7	Fixed in 5d5d9ec957bfa1eb2b05861c19f5d701dd006db7
LinuxLinux	Affected ≥ e9079cce201784632aed4b1a3121ee38c1ced0b6, < 5d2c4f182ea8516de8682e2b60411c03df00e3ea	Fixed in 5d2c4f182ea8516de8682e2b60411c03df00e3ea

Description

In the Linux kernel, the following vulnerability has been resolved: gfs2: fiemap page fault fix In gfs2_fiemap(), we are calling iomap_fiemap() while holding the inode glock. This can lead to recursive glock taking if the fiemap buffer is memory mapped to the same inode and accessing it triggers a page fault. Fix by disabling page faults for iomap_fiemap() and faulting in the buffer by hand if necessary. Fixes xfstest generic/742.

References

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