CVE-2026-23313Disclosure(linux / linux_kernel)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch linux linux_kernel systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix preempt count leak in napi poll tracepoint Using get_cpu() in the tracepoint assignment causes an obvious preempt count leak because nothing invokes put_cpu() to undo it: softirq: huh, entered softirq 3 NET_RX with preempt_count 00000100, exited with 00000101? This clearly has seen a lot of testing in the last 3+ years... Use smp_processor_id() instead.

0.5/ 10 priority

Sources & remediation

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • linux_kernel

Threat summary

  • Patch or workaround signal is available
  • 4 mentions across 4 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 3d ago at 1 mentions (2026-03-25); latest day: 1
  • 4 total mentions across 4 days

Affected systems

Vendors
Products
linux_kernel

1 version affected across 1 product

Deep dive

Activity timeline4 mentions / 4d
00111Mentions · 2026-03-25: 1Mentions · 2026-03-26: 1Mentions · 2026-03-28: 1Mentions · 2026-05-26: 1Patch / Workaround · 2026-03-25: 1Technical Details · 2026-03-25: 1Technical Details · 2026-05-26: 103-2503-2603-2805-26
Signal classification3 categories
Disclosure
250.0%
Patch
125.0%
General
125.0%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-03-251
Patch1
2026-03-261
General1
2026-03-281
Disclosure1
2026-05-261
Disclosure1
Full discourse4 posts
  • DailyCVE@dailycve
    Disclosure

    🔴 #Linux Kernel, Preempt count leak, #CVE-2026-23313 (High) https://dailycve.com/linux-kernel-preempt-count-leak-cve-2026-23313-high/

    Post summary

    The post announces a newly disclosed high‑severity Linux Kernel vulnerability (CVE‑2026‑23313) and links to a source for further details.

    0000063
    207 followersView on X
  • CVEarity@CVEarity
    Disclosure

    ⚡ New CVE Alert: CVE-2026-23313 🚨 Risk Level: Unknown 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-23313 #CVE-2026-23313 #CVE   #CyberSecurity #InfoSec https://t.co/VdoC4iYptl

    Post summary

    The tweet simply announces a new CVE (CVE‑2026‑23313) with an unknown risk level and unspecified affected products, pointing to a NVD link for more information.

    0000027
    123 followersView on X
  • WindowsForum@windowsforum
    General

    🛠️ Microsoft explains a Linux kernel “preempt count leak” fix like it’s a tiny typo, but in virtual/enterprise land this is how networking gets randomly… possessed. https://windowsforum.com/threads/cve-2026-23313-i40e-napi-tracepoint-preempt-count-leak-kernel-fix-explained.407471/ #LinuxKernel #I40EDriver #Cve202623313 #NapiTracepoint https://t.co/kXlVgG7M2R

    Post summary

    The forum thread discusses Microsoft’s explanation of a Linux kernel preempt count leak fix (CVE‑2026‑23313) but offers no PoC, exploit code, active exploitation evidence, or detailed technical/patch information.

    0000040
    1.0K followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-23313 In the Linux kernel, the following vulnerability has been resolved: i40e: Fix preempt count leak in napi poll tracepoint Using get_cpu() in the tracepoint assignmen… https://www.cve.org/CVERecord?id=CVE-2026-23313

    Post summary

    CVE-2026-23313, a preempt count leak in the i40e Linux kernel driver, has been fixed; no exploitation evidence or PoC is provided.

    00000156
    56.8K followersView on X
CPE platform detail3 entries

3 of 3 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--

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