CVE-2026-43074

Published May 6, 2026

Last updated 5 days ago

CVSS high 7.8

Overview

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.
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Modified
Products
linux_kernel

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

nvd@nist.gov
CWE-401
134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-416

Social media

Hype score
Not currently trending

  1. Linuxカーネルのeventpollにroot権限奪取の脆弱性、Pixel 10 ProでのPoCエクスプロイトが公開(CVE-2026-43074) AnthropicのMythosが発見した脆弱性 https://t.co/rzCH3AvdFx #セキュリティ対策Lab #security #securitynews #脆弱性

    @securityLab_jp

    14 Aug 2026

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  2. PoC exploit code is public for CVE-2026-43074, a Linux kernel eventpoll flaw that gives a root shell on Pixel 10 Pro. CVSS 7.3. Details inside. #Linux #Android #Pixel #CVE #CyberSecurity https://t.co/RPoyy1MopW

    @Daily_CyberSec

    10 Aug 2026

    242 Impressions

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Configurations

Related CVEs

  1. In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Check write tracking in all address spaces kvm_gfn_is_write_tracked() checks only the supplied memslot, but page tracking is per-address-space and shadow pages are shared across all address spaces. With SMM, a GFN can therefore be write-tracked in one address space and appear untracked through the other. Check the supplied slot first, then the slot for the other address space. This ensures all callers honor write tracking regardless of the active address space. In particular, it prevents mmu_try_to_unsync_pages() from marking an upper-level shadow page unsync and eventually triggering the BUG in pte_list_remove(). [invert direction of the conditional. - Paolo]•CVE-2026-98164
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References

Sources include official advisories and independent security research.