CVE-2026-81007 (CVSS 7.1)

Description

In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: validate write message length ipmb_write() read message fields before validating the length byte. A zero or short write can read uninitialized stack bytes. A length smaller than the SMBus header underflows the block write length. Require a non-empty buffer and the minimum IPMB request length. Also require the length byte plus payload before parsing the message.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS — Exploit Prediction

0.0013

Probability of exploitation

0.03%

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

Other References

https://git.kernel.org/stable/c/53637506884dbd5c91a89b1a3547d99d80f8ed2c https://git.kernel.org/stable/c/5719431ca2b5fa26560bb38f6202f8b97fa3bbb0 https://git.kernel.org/stable/c/60939bcda6f3f104ef456fdbf3cc5733c0720fb1 https://git.kernel.org/stable/c/7d66d54b974cff0a959e188af844d2d110422767 https://git.kernel.org/stable/c/8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89 https://git.kernel.org/stable/c/94f8d20153e348c79bc14dc25f873470518892da https://git.kernel.org/stable/c/a84c6e3d188f2c6e674910929eb790634299d6d5 https://git.kernel.org/stable/c/e527cd4e80066e1ed070fdc7c705bde340cdcc62

Frequently Asked Questions

What is CVE-2026-81007? +

In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: validate write message length ipmb_write() read message fields before validating the length byte. A zero or short write can read uninitialized stack bytes. A length smaller than the SMBus header underflows the block write length. Require a non-empty buffer and the minimum IPMB request length. Also require the length byte plus payload before parsing the message. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-81007? +

CVE-2026-81007 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0013, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-81007? +

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.

CVE-2026-81007