CVE-2026-80571
Published Aug 26, 2026
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.
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EPSS — Exploit Prediction
0.0015
Probability of exploitation
0.05%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Frequently Asked Questions
What is CVE-2026-80571? +
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.
How do I check if I'm vulnerable to CVE-2026-80571? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.