Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L L N U H H H 7.8 .0018 6.8 —
AFFECTED Product Versions Fixed Linux 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 – — Linux 4.17 – 5.10.258
TIMELINE May 1 Reserved by Linux May 21 Published (CNA: Linux) Sep 14 EXPLOIT PUBLISHED — CVE-2026-43502 (Linux). Public exploit reference added.
In the Linux kernel, the following vulnerability has been resolved: net/rds: handle zerocopy send cleanup before the message is queued A zerocopy send can fail after user pages have been pinned but before the message is attached to the sending socket. The purge path currently infers zerocopy state from rm->m_rs, so an unqueued message can be cleaned up as if it owned normal payload pages. However, zerocopy ownership is really determined by the presence of op_mmp_znotifier, regardless of whether the message has reached the socket queue. Capture op_mmp_znotifier up front in rds_message_purge() and use it as the cleanup discriminator. If the message is already associated with a socket, keep the existing completion path. Otherwise, drop the pinned page accounting directly and release the notifier before putting the payload pages. This keeps early send failure cleanup consistent with the zerocopy lifetime rules without changing the normal queued completion path.
| Date | Event | Detail |
|---|---|---|
| May 1, 2026 | Reserved | Reserved by Linux |
| May 21, 2026 | Published | Published (CNA: Linux) |
| September 14, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-43502 (Linux). Public exploit reference added. |
Authoritative record: CVE-2026-43502 at cve.org
Vendors: linux
Weaknesses: CWE-401
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-43502 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 Sunday, October 4, 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.
