CVE-2026-46070
CVE-2026-46070 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.1)
- EPSS exploit prediction: 0% (3rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-32452
- Weakness: CWE-787
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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 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.
- How severe is CVE-2026-46070?
- CVE-2026-46070 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
- Is CVE-2026-46070 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-46070?
- CVE-2026-46070 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-46070?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-46070 have an EU (EUVD) identifier?
- Yes. CVE-2026-46070 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32452.
- When was CVE-2026-46070 published?
- CVE-2026-46070 was published on 2026-05-27 and last updated on 2026-06-24.
References
- https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620ef
- https://git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98
- https://git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257d
- https://git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3
- https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9
- https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e
- https://git.kernel.org/stable/c/c96c6f01d84b5c67db1bf1cc8591c0b7146826fc
- https://git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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