CVE-2026-46070

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.

CVSS 3.1

7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

CWEs

CWE-787, CWE-125

Published

2026-05-27

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620ef
• https://git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98
• https://git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257d
• https://git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3
• https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9

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