CVE-2026-63860
Linux kernel RDMA netlink string handling can cause kernel memory corruption and RCE.
Is CVE-2026-63860 being exploited?
Not confirmed. CVE-2026-63860 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.14% probability of exploitation in the next 30 days.
How severe is CVE-2026-63860?
CVE-2026-63860 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-63860?
Yes. A fix has been recorded for CVE-2026-63860. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-63860 affect?
CVE-2026-63860 affects Linux kernel (rdma/core), Linux distributions using affected kernels. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-63860?
Apply vendor/kernel RDMA patch or update kernel ASAP
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Malformed RDMA netlink attributes lacking NUL can trigger kernel memory corruption, enabling kernel RCE or local privilege escalation.
Patch when possible
- affected>= 30dc5e63d6a5ad24894b5512d10b228d73645a44 and < fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf
- affected>= 30dc5e63d6a5ad24894b5512d10b228d73645a44 and < 87111356d58d86edb221ba144d261ed83a5b8bbe
- affected>= 30dc5e63d6a5ad24894b5512d10b228d73645a44 and < abda65bdd13084c771842adaac1f652d0660dd82
- affected>= 30dc5e63d6a5ad24894b5512d10b228d73645a44 and < 137b5918931d4d05aa8ea8d3adf67f7224eef63c
- affected>= 30dc5e63d6a5ad24894b5512d10b228d73645a44 and < 5877c043398d5fa0e93919a3d837e5cd7a98a961
- affected>= 30dc5e63d6a5ad24894b5512d10b228d73645a44 and < f2c7b39dde2e61df8157066969cc2a408cd3dcd9
- affected>= 30dc5e63d6a5ad24894b5512d10b228d73645a44 and < c26a0052cceed4c4d380ee5808b699f937fb58d8
- affected>= 30dc5e63d6a5ad24894b5512d10b228d73645a44 and < 6ed3d14fc45d3da6025e7fe4a6a09066856698e2
- affected3.16
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.