CVE-2026-63860

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux30dc5e63d6a5ad24894b5512d10b228d73645a44 < fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdfaffected
LinuxLinux30dc5e63d6a5ad24894b5512d10b228d73645a44 < 87111356d58d86edb221ba144d261ed83a5b8bbeaffected
LinuxLinux30dc5e63d6a5ad24894b5512d10b228d73645a44 < abda65bdd13084c771842adaac1f652d0660dd82affected
LinuxLinux30dc5e63d6a5ad24894b5512d10b228d73645a44 < 137b5918931d4d05aa8ea8d3adf67f7224eef63caffected
LinuxLinux30dc5e63d6a5ad24894b5512d10b228d73645a44 < 5877c043398d5fa0e93919a3d837e5cd7a98a961affected
LinuxLinux30dc5e63d6a5ad24894b5512d10b228d73645a44 < f2c7b39dde2e61df8157066969cc2a408cd3dcd9affected
LinuxLinux30dc5e63d6a5ad24894b5512d10b228d73645a44 < c26a0052cceed4c4d380ee5808b699f937fb58d8affected
LinuxLinux30dc5e63d6a5ad24894b5512d10b228d73645a44 < 6ed3d14fc45d3da6025e7fe4a6a09066856698e2affected
LinuxLinux3.16affected
LinuxLinux0 < 3.16unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.141 <= 6.6.*unaffected
LinuxLinux6.12.91 <= 6.12.*unaffected
LinuxLinux6.18.33 <= 6.18.*unaffected
LinuxLinux7.0.10 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References