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CVE-2025-68806

HIGHCVSS 7.5/10EPSS 0.17%

Last modified

CVE-2025-68806 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2_set_ea function, which handles Extended Attributes (EA), was performing buffer validation checks that incorrectly omitted the size of the null terminating character (+1 byte) for EA Name. This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where the null terminator is expected to be present in the buffer, ensuring the validation accurately reflects the total required buffer size.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2_set_ea function, which handles Extended Attributes (EA), was performing buffer validation checks that incorrectly omitted the size of the null terminating character (+1 byte) for EA Name. This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where the null terminator is expected to be present in the buffer, ensuring the validation accurately reflects the total required buffer size.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.17%

6.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= d070c4dd2a5bed4e9832eec5b6c029c7d14892ea, < cae52c592a07e1d3fa3338a5f064a374a5f26750; >= 0ba5439d9afa2722e7728df56f272c89987540a4, < a28a375a5439eb474e9f284509a407efb479c925; >= 0ba5439d9afa2722e7728df56f272c89987540a4, < d26af6d14da43ab92d07bc60437c62901dc522e6; >= 0ba5439d9afa2722e7728df56f272c89987540a4, < 6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4; >= 0ba5439d9afa2722e7728df56f272c89987540a4, < 95d7a890e4b03e198836d49d699408fd1867cb55; bb5bf157b5be1643cccc7cbbe57fcdef9ae52c2c; 1a13ecb96230e8b7b91967e292836f7b01ec8111; 404e7c01e16288b5e0171d1d8fd3328e806d0794; >= 6.1.52, < 6.1.160; >= 5.15.131, < 5.16; >= 6.4.15, < 6.5; >= 6.5.2, < 6.6
LinuxLinux6.6

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-68806?
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2_set_ea function, which handles Extended Attributes (EA), was performing buffer validation checks that incorrectly omitted the size of the null terminating character (+1 byte) for EA Name. This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where the null terminator is expected to be present in the buffer, ensuring the validation accurately reflects the total required buffer size.
How severe is CVE-2025-68806?
CVE-2025-68806 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2025-68806?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST