CVE-2024-45023

md/raid1: Fix data corruption for degraded array with slow disk

HIGH
7.1
CVSS Score
Published: September 11, 2024 at 03:13 PM UTC
Updated: August 5, 2026 at 12:04 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid1: Fix data corruption for degraded array with slow disk read_balance() will avoid reading from slow disks as much as possible, however, if valid data only lands in slow disks, and a new normal disk is still in recovery, unrecovered data can be read: raid1_read_request read_balance raid1_should_read_first -> return false choose_best_rdev -> normal disk is not recovered, return -1 choose_bb_rdev -> missing the checking of recovery, return the normal disk -> read unrecovered data Root cause is that the checking of recovery is missing in choose_bb_rdev(). Hence add such checking to fix the problem. Also fix similar problem in choose_slow_rdev().

Affected

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

6.9 ≤ v < 6.10.76.9 ≤ v < 6.116.11 rc16.11 rc26.11 rc3dfa8ecd167c1753d4fc24a517e1d79c603183c94
Vendor states this is fixed in 2febf5fdbf5d9a52ddc3e986971c8609b1582d67 (fixed)
Vendor states this is fixed in c916ca35308d3187c9928664f9be249b22a3a701 (fixed)
Vendor states this is fixed in 6.10.7 (unaffected)
Vendor states this is fixed in 6.11 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2febf5fdbf5d9a52ddc3e986971c8609b1582d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c916ca35308d3187c9928664f9be249b22a3a701

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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