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CVE-2025-22076: exfat: fix missing shutdown check

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-16 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: exfat: fix missing shutdown check xfstests generic/730 test failed because after deleting the device that still had dirty data, the file could still be read without returning an error. The reason is the missing shutdown check in ->read_iter. I also noticed that shutdown checks were missing from ->write_iter, ->splice_read, and ->mmap. This commit adds shutdown checks to all of them.

Affected products

• Linux kernel: from 6.12 before 6.12.23; from 6.13 before 6.13.11; from 6.14 before 6.14.2 — fixed in 6.12.23, 6.13.11, 6.14.2

How to fix

Upgrade to a fixed version: Linux kernel 6.12.23, 6.13.11, 6.14.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/47e35366bc6fa3cf189a8305bce63992495f3efa
• https://git.kernel.org/stable/c/4a9595eb024b8319957c178be3cdeed613ac0795
• https://git.kernel.org/stable/c/539147585ca453db6e3d7a5cf3b9c9690513762d
• https://git.kernel.org/stable/c/e41e33eb795cb9c1ead6ac627d8710546fac6e81

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