What’s Vulnerable › Vulnerabilities

CVE-2024-42236: usb: gadget: configfs: Prevent OOB read/write in usb_string_copy()

• 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: 2024-08-07 · updated 2026-08-04
• Weakness: CWE-787

Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: configfs: Prevent OOB read/write in usb_string_copy() Userspace provided string 's' could trivially have the length zero. Left unchecked this will firstly result in an OOB read in the form `if (str[0 - 1] == '\n') followed closely by an OOB write in the form `str[0 - 1] = '\0'`. There is already a validating check to catch strings that are too long. Let's supply an additional check for invalid strings that are too short.

Affected products

• Linux kernel: before 4.19.318; from 4.20 before 5.4.280; from 5.5 before 5.10.222; from 5.11 before 5.15.163; from 5.16 before 6.1.100; from 6.2 before 6.6.41 — fixed in 4.19.318, 5.10.222, 5.15.163, 5.4.280, 6.1.100, 6.6.41

How to fix

Upgrade to a fixed version: Linux kernel 4.19.318, 5.10.222, 5.15.163, 5.4.280. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2d16f63d8030903e5031853e79d731ee5d474e70
• https://git.kernel.org/stable/c/6d3c721e686ea6c59e18289b400cc95c76e927e0
• https://git.kernel.org/stable/c/72b8ee0d9826e8ed00e0bdfce3e46b98419b37ce
• https://git.kernel.org/stable/c/a444c3fc264119801575ab086e03fb4952f23fd0
• https://git.kernel.org/stable/c/c95fbdde87e39e5e0ae27f28bf6711edfb985caa
• https://git.kernel.org/stable/c/d1205033e912f9332c1dbefa812e6ceb0575ce0a
• https://git.kernel.org/stable/c/e8474a10c535e6a2024c3b06e37e4a3a23beb490
• https://git.kernel.org/stable/c/eecfefad0953b2f31aaefa058f7f348ff39c4bba
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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