CVE-2026-46070

md/raid5: validate payload size before accessing journal metadata

State: Published
Severity: 7.1 High
Published: May 27, 2026
Updated: Oct 19, 2026
Reserved: May 13, 2026

Description

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

md/raid5: validate payload size before accessing journal metadata

r5c_recovery_analyze_meta_block() and r5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a journal metadata block using on-disk payload size fields without validating them against the remaining space in the metadata block.

A corrupted journal contains payload sizes extending beyond the PAGE_SIZE boundary can cause out-of-bounds reads when accessing payload fields or computing offsets.

Add bounds validation for each payload type to ensure the full payload fits within meta_size before processing.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H	Linux

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
LinuxLinux	b4c625c67362b3940f619c1a836b4e8329106658 to before c96c6f01d84b5c67db1bf1cc8591c0b7146826fcAffected b4c625c67362b3940f619c1a836b4e8329106658 to before ef4851d8324fd978ca1ff9ec76a275438f887743Affected b4c625c67362b3940f619c1a836b4e8329106658 to before 28d3ff7109c66e99dc1b7cddacb5c760849620efAffected b4c625c67362b3940f619c1a836b4e8329106658 to before 33698bd1b2db9764a29df7751533d33967ff5c98Affected b4c625c67362b3940f619c1a836b4e8329106658 to before c3a1cf78bd1bbb51b2cc5189b4743056553c1e0eAffected b4c625c67362b3940f619c1a836b4e8329106658 to before 73ce72edd113374801045924d4417199963f73a3Affected b4c625c67362b3940f619c1a836b4e8329106658 to before 406aa86394ead347c47428fb51b6359bdaa2257dAffected b4c625c67362b3940f619c1a836b4e8329106658 to before b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9Affected
LinuxLinux	4.10Affected before 4.10Not affected 5.10.258 through 5.10.Not affected 5.15.209 through 5.15.Not affected 6.1.175 through 6.1.Not affected 6.6.140 through 6.6.Not affected 6.12.86 through 6.12.Not affected 6.18.27 through 6.18.Not affected 7.0.4 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

b4c625c67362b3940f619c1a836b4e8329106658 to before c96c6f01d84b5c67db1bf1cc8591c0b7146826fcAffected
b4c625c67362b3940f619c1a836b4e8329106658 to before ef4851d8324fd978ca1ff9ec76a275438f887743Affected
b4c625c67362b3940f619c1a836b4e8329106658 to before 28d3ff7109c66e99dc1b7cddacb5c760849620efAffected
b4c625c67362b3940f619c1a836b4e8329106658 to before 33698bd1b2db9764a29df7751533d33967ff5c98Affected
b4c625c67362b3940f619c1a836b4e8329106658 to before c3a1cf78bd1bbb51b2cc5189b4743056553c1e0eAffected
b4c625c67362b3940f619c1a836b4e8329106658 to before 73ce72edd113374801045924d4417199963f73a3Affected
b4c625c67362b3940f619c1a836b4e8329106658 to before 406aa86394ead347c47428fb51b6359bdaa2257dAffected
b4c625c67362b3940f619c1a836b4e8329106658 to before b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9Affected

LinuxLinux

4.10Affected
before 4.10Not affected
5.10.258 through 5.10.*Not affected
5.15.209 through 5.15.*Not affected
6.1.175 through 6.1.*Not affected
6.6.140 through 6.6.*Not affected
6.12.86 through 6.12.*Not affected
6.18.27 through 6.18.*Not affected
7.0.4 through 7.0.*Not affected
7.1 and laterNot affected

References

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