CVE-2026-43074

HighCVSS 7.8/10Last modified Oct 19, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

eventpoll: defer struct eventpoll free to RCU grace period

In certain situations, ep_free() in eventpoll.c will kfree the epi->ep eventpoll struct while it still being used by another concurrent thread. Defer the kfree() to an RCU callback to prevent UAF.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-401CWE-416

Affected software

No affected versions have been published.

Timeline

Published
May 6, 2026
Last modified
Oct 19, 2026
NVD status
Modified

Related CVEs from 2026

CVE-2026-430757.8In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix out-of-bounds write in ocfs2_write_end_inline KASAN reportsCVE-2026-430767.8In the Linux kernel, the following vulnerability has been resolved: ocfs2: validate inline data i_size during inode read When reading an iCVE-2026-430775.5In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Fix minimum RX size check for decryption The checCVE-2026-430787.8In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl WhCVE-2026-430795.5In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: Skip discovery table for offline dies This warnCVE-2026-43086.3A weakness has been identified in frdel/agent0ai agent-zero 0.9.7. This affects the function handle_pdf_document of the file python/helpers/CVE-2026-430805.5In the Linux kernel, the following vulnerability has been resolved: l2tp: Drop large packets with UDP encap syzbot reported a WARN on my pCVE-2026-430815.5In the Linux kernel, the following vulnerability has been resolved: net: ipa: fix GENERIC_CMD register field masks for IPA v5.0+ Fix the fCVE-2026-430825.5In the Linux kernel, the following vulnerability has been resolved: net: txgbe: leave space for null terminators on property_entry Lists oCVE-2026-430839.1In the Linux kernel, the following vulnerability has been resolved: net: ioam6: fix OOB and missing lock When trace->type.bit6 is set: CVE-2026-430847.8In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_queue: make hash table per queue Sharing a globalCVE-2026-430855.5In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: initialize nfgenmsg in NLMSG_DONE terminator
CVE-2026-43074: High severity, CVSS 7.8 | Vulnix