CVE-2026-46070
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.
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Affected products
2Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620efnvd
- git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98nvd
- git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257dnvd
- git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3nvd
- git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9nvd
- git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0envd
- git.kernel.org/stable/c/c96c6f01d84b5c67db1bf1cc8591c0b7146826fcnvd
- git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743nvd
News mentions
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