CVE-2026-63860

high

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.

References

https://git.kernel.org/stable/c/fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf

https://git.kernel.org/stable/c/f2c7b39dde2e61df8157066969cc2a408cd3dcd9

https://git.kernel.org/stable/c/c26a0052cceed4c4d380ee5808b699f937fb58d8

https://git.kernel.org/stable/c/abda65bdd13084c771842adaac1f652d0660dd82

https://git.kernel.org/stable/c/87111356d58d86edb221ba144d261ed83a5b8bbe

https://git.kernel.org/stable/c/6ed3d14fc45d3da6025e7fe4a6a09066856698e2

https://git.kernel.org/stable/c/5877c043398d5fa0e93919a3d837e5cd7a98a961

https://git.kernel.org/stable/c/137b5918931d4d05aa8ea8d3adf67f7224eef63c

Details

Source: Mitre, NVD

Published: 2026-07-19

Updated: 2026-07-20

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.4

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

Severity: High

EPSS

EPSS: 0.00165