CVE-2026-46070: linux Out-of-bounds Write
Vulnerability summary
CVE-2026-46070 is a high (CVSS 7.1) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 46 · Related 46Timeline
- 27-05-2026PublishedVulnerability first disclosed.
- 19-10-2026Last modifiedVulnerability information updated.
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 metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.13%
Chance of exploitation in the next 30 days
Percentile
2%
Versus all other CVEs
30-day change
0.00 pp
From 0.13% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu158 products
- linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-27.27
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1008.8
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ b4c625c67362b3940f619c1a836b4e8329106658, < c96c6f01d84b5c67db1bf1cc8591c0b7146826fc | ≥ b4c625c67362b3940f619c1a836b4e8329106658, < ef4851d8324fd978ca1ff9ec76a275438f887743 | ≥ b4c625c67362b3940f619c1a836b4e8329106658, < 28d3ff7109c66e99dc1b7cddacb5c760849620ef | ≥ b4c625c67362b3940f619c1a836b4e8329106658, < 33698bd1b2db9764a29df7751533d33967ff5c98 | ≥ b4c625c67362b3940f619c1a836b4e8329106658, < c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e | ≥ b4c625c67362b3940f619c1a836b4e8329106658, < 73ce72edd113374801045924d4417199963f73a3 | ≥ b4c625c67362b3940f619c1a836b4e8329106658, < 406aa86394ead347c47428fb51b6359bdaa2257d | ≥ b4c625c67362b3940f619c1a836b4e8329106658, < b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9 | 4.10
- linux_kernel≥ 4.10, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.86 | ≥ 6.13, < 6.18.27 | ≥ 6.19, < 7.0.4
Debian1 product
- linux< 6.1.176-1 | < 6.12.86-1 | < 7.0.4-1
3 vendors · 161 products
