CVE-2026-74358

ext4: fix fast commit wait/wake bit mapping on 64-bit

N/A
Published: August 15, 2026 at 05:58 AM UTC
Updated: August 17, 2026 at 06:19 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of i_flags, and ext4_test_inode_state() applies the corresponding +32 offset. The fast-commit wait and wake paths open-coded the wait key with the raw EXT4_STATE_* value. Add small helpers for the state wait word and bit, and use them for the FC_COMMITTING and FC_FLUSHING_DATA waits so the wait key follows the same mapping as the state helpers.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.16 ≤ v < 6.18.406.16 ≤ v < 7.1.56.16 ≤ v < 7.26.16857d32f2618166765ce9306a246d0745afc76859
Vendor states this is fixed in 8b3bc93fee6771775243665a0cf31857d6659775 (fixed)
Vendor states this is fixed in d06df6e447a8510f86db44b2522d5375362a9499 (fixed)
Vendor states this is fixed in e82d515092a0cf2bca92f399d5c330c324879cea (fixed)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.40 (unaffected)
Vendor states this is fixed in 7.1.5 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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