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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620efPatch
- https://git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98Patch
- https://git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257dPatch
- https://git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3Patch
- https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9Patch
- https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0ePatch
- https://git.kernel.org/stable/c/c96c6f01d84b5c67db1bf1cc8591c0b7146826fcPatch
- https://git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.