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CVE-2026-63860

HIGHCVSS 8.4/10EPSS 0.13%

Last modified

CVE-2026-63860 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLA_NUL_STRING These attributes are evaluated as c-string (passed to strcmp), but NLA_STRING doesn't check for the presence of a \0 terminator. Either this needs to switch to nla_strcmp() and needs to adjust printf fmt specifier to not use plain %s, or this needs to use NLA_NUL_STRING. As the code has been this way for long time, it seems to me that userspace does include the terminating nul, even tough its not enforced so far, and thus NLA_NUL_STRING use is the simpler solution.. EPSS estimates a 0.13% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLA_NUL_STRING These attributes are evaluated as c-string (passed to strcmp), but NLA_STRING doesn't check for the presence of a \0 terminator. Either this needs to switch to nla_strcmp() and needs to adjust printf fmt specifier to not use plain %s, or this needs to use NLA_NUL_STRING. As the code has been this way for long time, it seems to me that userspace does include the terminating nul, even tough its not enforced so far, and thus NLA_NUL_STRING use is the simpler solution.

Metrics

CVSS 3.1
8.4/10

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

EPSS Probability
0.13%

3.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 30dc5e63d6a5ad24894b5512d10b228d73645a44, < fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf; >= 30dc5e63d6a5ad24894b5512d10b228d73645a44, < 87111356d58d86edb221ba144d261ed83a5b8bbe; >= 30dc5e63d6a5ad24894b5512d10b228d73645a44, < abda65bdd13084c771842adaac1f652d0660dd82; >= 30dc5e63d6a5ad24894b5512d10b228d73645a44, < 137b5918931d4d05aa8ea8d3adf67f7224eef63c; >= 30dc5e63d6a5ad24894b5512d10b228d73645a44, < 5877c043398d5fa0e93919a3d837e5cd7a98a961; >= 30dc5e63d6a5ad24894b5512d10b228d73645a44, < f2c7b39dde2e61df8157066969cc2a408cd3dcd9; >= 30dc5e63d6a5ad24894b5512d10b228d73645a44, < c26a0052cceed4c4d380ee5808b699f937fb58d8; >= 30dc5e63d6a5ad24894b5512d10b228d73645a44, < 6ed3d14fc45d3da6025e7fe4a6a09066856698e2
LinuxLinux3.16

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-63860?
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLA_NUL_STRING These attributes are evaluated as c-string (passed to strcmp), but NLA_STRING doesn't check for the presence of a \0 terminator. Either this needs to switch to nla_strcmp() and needs to adjust printf fmt specifier to not use plain %s, or this needs to use NLA_NUL_STRING. As the code has been this way for long time, it seems to me that userspace does include the terminating nul, even tough its not enforced so far, and thus NLA_NUL_STRING use is the simpler solution.
How severe is CVE-2026-63860?
CVE-2026-63860 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.
How do I fix CVE-2026-63860?
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