Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-63986
Linux Linux — ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0012 1.7 —
AFFECTED
Product Versions Fixed
Linux b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 – —
Linux 6.14 – 6.18.35
TIMELINE
Jul 19 Reserved by Linux
Jul 19 Published (CNA: Linux)
Oct 7 ENRICHED — CVE-2026-63986 (Linux). Received CVSS 5.5 and CPE data from NVD.
Description
In the Linux kernel, the following vulnerability has been resolved:
ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure
The goto err label leads to:
genlmsg_cancel(skb, ehdr);
return ret;
If ethnl_tsinfo_prepare_dump() failed, it has not started a genlmsg.
There's nothing to cancel, and passing an error pointer to
genlmsg_cancel() would cause a crash.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 19, 2026 | Reserved | Reserved by Linux |
| July 19, 2026 | Published | Published (CNA: Linux) |
| October 7, 2026 | ENRICHED | ENRICHED — CVE-2026-63986 (Linux). Received CVSS 5.5 and CPE data from NVD. |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Linux | Linux | — | b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906 | — |
| Linux | Linux | — | 6.14 | 6.18.35 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-63986 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
