CVE-2024-35813: mmc: core: Avoid negative index with array access

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-17 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: core: Avoid negative index with array access Commit 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu") assigns prev_idata = idatas[i - 1], but doesn't check that the iterator i is greater than zero. Let's fix this by adding a check.

Affected products

Debian Linux: 10.0
Linux kernel: from 5.4.269 before 5.4.274; from 5.10.210 before 5.10.215; from 5.15.149 before 5.15.154; from 6.1.76 before 6.1.84; from 6.6.15 before 6.6.24; from 6.7.3 before 6.7.12 — fixed in 5.10.215, 5.15.154, 5.4.274, 6.1.84, 6.6.24, 6.7.12

How to fix

Upgrade to a fixed version: Linux kernel 5.10.215, 5.15.154, 5.4.274, 6.1.84. Check the vendor advisory for mitigations.

References

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