CVE-2024-27023

CVE Details

Release Date:

2024-05-01

Description

In the Linux kernel, the following vulnerability has been resolved:\nmd: Fix missing release of 'active_io' for flush\nsubmit_flushes\natomic_set(&mddev->flush_pending, 1);\nrdev_for_each_rcu(rdev, mddev)\natomic_inc(&mddev->flush_pending);\nbi->bi_end_io = md_end_flush\nsubmit_bio(bi);\n/* flush io is done first */\nmd_end_flush\nif (atomic_dec_and_test(&mddev->flush_pending))\npercpu_ref_put(&mddev->active_io)\n-> active_io is not released\nif (atomic_dec_and_test(&mddev->flush_pending))\n-> missing release of active_io\nFor consequence, mddev_suspend() will wait for 'active_io' to be zero\nforever.\nFix this problem by releasing 'active_io' in submit_flushes() if\n'flush_pending' is decreased to zero.

See more information about CVE-2024-27023 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	5.5	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14