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CVE-2026-74603: ptp: ocp: Fix board ID over-read

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-22 · updated 2026-10-14

Description

In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: Fix board ID over-read The EEPROM board ID is a fixed 13-byte field and is not guaranteed to contain a NUL terminator. Passing it directly to devlink_info_version_fixed_put() treats it as a C string and may read beyond the field. Format at most OCP_BOARD_ID_LEN bytes into the existing local buffer before reporting the ID. Use a precision limit because the snprintf() output size alone does not bound the source string scan.

Affected products

• Linux kernel: 5.18 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3d965811be78473654e6e8cc8e4fb7b6b87aa6c1
• https://git.kernel.org/stable/c/5fd91dd4a143479b0575fb1f202ec1c501e71fd5
• https://git.kernel.org/stable/c/6b69f2ef10cdb018c0b127a7cab88e590bbddba4
• https://git.kernel.org/stable/c/72ef3ce80078199bfad32f98d055f44ba7cd0c3d
• https://git.kernel.org/stable/c/f8d7e5751267637190eff887c971d5b468106213
• https://git.kernel.org/stable/c/f92558bbe78d6284fedd053900f82a70f0aa8707

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