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CVE-2026-46070

md/raid5: validate payload size before accessing journal metadata

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From b4c625c67362b3940f619c1a836b4e8329106658 · fixed in c96c6f01d84b5c67db1bf1cc8591c0b7146826fc; From b4c625c67362b3940f619c1a836b4e8329106658 · fixed in ef4851d8324fd978ca1ff9ec76a275438f887743; From b4c625c67362b3940f619c1a836b4e8329106658 · fixed in 28d3ff7109c66e99dc1b7cddacb5c760849620ef; From b4c625c67362b3940f619c1a836b4e8329106658 · fixed in 33698bd1b2db9764a29df7751533d33967ff5c98; From b4c625c67362b3940f619c1a836b4e8329106658 · fixed in c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e; From b4c625c67362b3940f619c1a836b4e8329106658 · fixed in 73ce72edd113374801045924d4417199963f73a3; From b4c625c67362b3940f619c1a836b4e8329106658 · fixed in 406aa86394ead347c47428fb51b6359bdaa2257d; From b4c625c67362b3940f619c1a836b4e8329106658 · fixed in b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9

  • Linux Linux

    4.10

  • KernelLinux

    From 4.10.0 · fixed in 5.10.258; From 5.11.0 · fixed in 5.15.209; From 5.16.0 · fixed in 6.1.175; From 6.2.0 · fixed in 6.6.140; From 6.7.0 · fixed in 6.12.86; From 6.13.0 · fixed in 6.18.27; From 6.19.0 · fixed in 7.0.4

References 8

git.kernel.org