CVE-2024-27023

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

md: Fix missing release of 'active_io' for flush

submit_flushes atomic_set(&mddev->flush_pending, 1); rdev_for_each_rcu(rdev, mddev) atomic_inc(&mddev->flush_pending); bi->bi_end_io = md_end_flush submit_bio(bi); /* flush io is done first */ md_end_flush if (atomic_dec_and_test(&mddev->flush_pending)) percpu_ref_put(&mddev->active_io) -> active_io is not released

if (atomic_dec_and_test(&mddev->flush_pending)) -> missing release of active_io

For consequence, mddev_suspend() will wait for 'active_io' to be zero forever.

Fix this problem by releasing 'active_io' in submit_flushes() if 'flush_pending' is decreased to zero.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= f9f2d957a8ea93c73182aebf7de30935a58c027d, < 6b2ff10390b19a2364af622b6666b690443f9f3f; >= 530cec617f5a8ba6f26bcbf0d64d75c951d17730, < 02dad157ba11064d073f5499dc33552b227d5d3a; >= c4c2345214b66e2505a26fd2ea58839dd7a1d48d, < 11f81438927f84edfaaeb5d5f10856c3a1c1fc82; >= fa2bbff7b0b4e211fec5e5686ef96350690597b5, < 855678ed8534518e2b428bcbcec695de9ba248e8
LinuxLinux>= 6.1.75, < 6.1.80; >= 6.6.14, < 6.6.19; >= 6.7.2, < 6.7.7

References

Timeline

Published
May 1, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2024-27023: Medium severity, CVSS 5.5 | Vulnix