What’s Vulnerable › Vulnerabilities

CVE-2026-80571: powerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak

• Severity: unknown
• 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: 2026-08-26 · updated 2026-08-26

Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak In papr_phy_attest_create_handle(), the params->cmd.length is not validated before use, which can result in a buffer overlow. Check it and return -EINVAL if it is either 0 or exceeds sizeof(params->cmd). Also, params is freed on the success path but not error. Free it on errors after memory allocation. And free it on negative fd.

Affected products

• Linux kernel: 6.16 — 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/5b17f3f34391372faf03e79d947e0c50ab6dd258
• https://git.kernel.org/stable/c/828a8d1a9107aec6353d896882df8383accf7e80
• https://git.kernel.org/stable/c/ed98ce338f9a65c90cb930b088f1eb36de7181af

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