CVE-2026-43262

critical

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

https://git.kernel.org/stable/c/e428670cfb2993d8c224effd076242ca6b0950de

https://git.kernel.org/stable/c/e411d74cc5ba290f85d0dd5e4d1df8f1d6d975d2

https://git.kernel.org/stable/c/cead3bebf3e318578b8a86a5472015d713d2a8a8

https://git.kernel.org/stable/c/9d15fee888f0e8938c9aeed71ec9c2cbba0c88ab

https://git.kernel.org/stable/c/5d5d9ec957bfa1eb2b05861c19f5d701dd006db7

https://git.kernel.org/stable/c/5d2c4f182ea8516de8682e2b60411c03df00e3ea

https://git.kernel.org/stable/c/2e121c53b581e40397ae08090a7af4ed10781fbc

Details

Source: Mitre, NVD

Published: 2026-05-06

Updated: 2026-05-06

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical