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CVE-2023-53059: platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl

• Severity: high (CVSS 7.1 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: 2025-05-02 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl It is possible to peep kernel page's data by providing larger `insize` in struct cros_ec_command[1] when invoking EC host commands. Fix it by using zeroed memory. [1]: https://elixir.bootlin.com/linux/v6.2/source/include/linux/platform_data/cros_ec_proto.h#L74

Affected products

• Linux kernel: from 5.4 before 5.4.240; from 5.5 before 5.10.177; from 5.11 before 5.15.105; from 5.16 before 6.1.22; from 6.2 before 6.2.9; 6.3-rc1, 6.3-rc2, 6.3-rc3 — fixed in 5.10.177, 5.15.105, 5.4.240, 6.1.22, 6.2.9

How to fix

Upgrade to a fixed version: Linux kernel 5.10.177, 5.15.105, 5.4.240, 6.1.22. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/13493ad6a220cb3f6f3552a16b4f2753a118b633
• https://git.kernel.org/stable/c/a0d8644784f73fa39f57f72f374eefaba2bf48a0
• https://git.kernel.org/stable/c/b20cf3f89c56b5f6a38b7f76a8128bf9f291bbd3
• https://git.kernel.org/stable/c/eab28bfafcd1245a3510df9aa9eb940589956ea6
• https://git.kernel.org/stable/c/ebea2e16504f40d2c2bac42ad5c5a3de5ce034b4
• https://git.kernel.org/stable/c/f86ff88a1548ccf5a13960c0e7625ca787ea0993

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