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Vulnerability record · CVE-2026-46070 · published 27 May 2026

CVE-2026-46070: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

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.

7.1 CVSS 3.1 High EPSS 0.13% · top 98.1% CWE-787 · Out-of-bounds write Undergoing Analysis
7.1CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
24 Jun 2026Last modified by NVD

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620ef Patch
https://git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98 Patch
https://git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257d Patch
https://git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3 Patch
https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9 Patch
https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e Patch
https://git.kernel.org/stable/c/c96c6f01d84b5c67db1bf1cc8591c0b7146826fc Patch
https://git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-46070), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.