VulnSocial

CVE-2026-23204Disclosure(linux / linux_kernel)

LOWCVSS 7.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_u32: use skb_header_pointer_careful() skb_header_pointer() does not fully validate negative @offset values. Use skb_header_pointer_careful() instead. GangMin Kim provided a report and a repro fooling u32_classify(): BUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0 net/sched/cls_u32.c:221

linux CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Other references
Weakness type (CWE)
CWE-125

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

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • Patch: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-02-14); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
linux
Products
linux_kernel

2 versions affected across 1 product

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-02-14: 2Mentions · 2026-05-11: 1Technical Details · 2026-02-14: 2Technical Details · 2026-05-11: 102-1405-11
Signal classification2 categories
Disclosure
266.7%
Patch
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-02-142
Disclosure1Patch1
2026-05-111
Disclosure1
Full discourse3 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-23204 Linux Kernel U32 Classifier Vulnerability https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-23204

    Post summary

    A new CVE-2026-23204 Linux kernel vulnerability—identified as a U32 Classifier flaw—was disclosed with minimal details and a link to a vulnerability database.

    0000143
    4.0K followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-23204 In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_u32: use skb_header_pointer_careful() skb_header_pointer() does not fully validat… https://www.cve.org/CVERecord?id=CVE-2026-23204

    Post summary

    The Linux kernel vulnerability CVE-2026-23204 has been fixed; the issue involves skb_header_pointer usage in cls_u32, but no PoC, exploit, or active exploitation is mentioned.

    00010125
    56.4K followersView on X
  • Ferramentas Linux@Cezar_H_Linux
    Disclosure

    Three Linux kernel flaws (CVE-2026-23004, CVE-2026-23204, CVE-2026-31431) let local users escalate privileges on SUSE systems. Read more- > https://tinyurl.com/mr3wx5we #Security https://t.co/a1U2KXnoxd

    Post summary

    The tweet announces the discovery of three Linux kernel privilege‑escalation flaws affecting SUSE systems, linking to additional information but not providing PoC, exploit code, or patch details.

    0000057
    1.5K followersView on X
CPE platform detail15 entries

15 of 15 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---
OSlinuxlinux_kernel2.6.35--
OSlinuxlinux_kernel2.6.35--
OSlinuxlinux_kernel2.6.35--
OSlinuxlinux_kernel2.6.35--
OSlinuxlinux_kernel2.6.35--
OSlinuxlinux_kernel2.6.35--
OSlinuxlinux_kernel6.19--
OSlinuxlinux_kernel6.19--
OSlinuxlinux_kernel6.19--
OSlinuxlinux_kernel6.19--
OSlinuxlinux_kernel6.19--
OSlinuxlinux_kernel6.19--
OSlinuxlinux_kernel6.19--
OSlinuxlinux_kernel6.19--

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