VulnSocial

CVE-2026-64000Patch(linux / linux_kernel)

LOWCVSS 9.8 · CRITICAL

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: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is linearized before access by adding sizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this, a truncated frame could cause an out-of-bounds access.

linux CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
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

  • Patch or workaround signal is available
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 3 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-07-19); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
linux
Products
linux_kernel

1 version affected across 1 product

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-07-19: 2Mentions · 2026-07-26: 1Patch / Workaround · 2026-07-19: 1Patch / Workaround · 2026-07-26: 1Technical Details · 2026-07-19: 2Technical Details · 2026-07-26: 107-1907-26
Signal classification2 categories
Patch
266.7%
Disclosure
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-07-192
Disclosure1Patch1
2026-07-261
Patch1
Full discourse3 posts
  • SecAlerts@SecAlertsCo
    Patch

    🐧 Linux kernel CVE-2026-64000: critical OOB access (CVSS 9.8) in HSR supervision frame handling. TLV header not fully linearized before access — network-exploitable, no auth required. Patch now. #cybersecurity #ciso #cto #vulnerabilities #mssp https://secalerts.co/vulnerability/CVE-2026-64000?utm_campaign=x https://t.co/7vRj77l9z0

    Post summary

    The tweet announces the Linux kernel CVE‑2026‑64000 as a critical out‑of‑bounds vulnerability, notes that a patch has been released, and provides technical details, but does not discuss PoC, exploits, or active exploitation.

    00000194
    869 followersView on X
  • Infoflowcloud@infoflowcloud
    Patch

    🚨*CVE* CVE-2026-64000 In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is… https://www.cve.org/CVERecord?id=CVE-2026-64000 ----- Traducción: CVE-2026-64000 En … http://infoflow.cloud`

    Post summary

    CVE-2026-64000 was fixed in the Linux kernel, addressing an out‑of‑bounds access vulnerability in the HSR supervision frame handling; no exploit or PoC was reported.

    0000032
    92 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-64000 In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is… https://www.cve.org/CVERecord?id=CVE-2026-64000

    Post summary

    CVE‑2026‑64000 describes a potential out‑of‑bounds access in the Linux kernel’s HSR supervision frame handling, and the issue has since been resolved; no PoC, exploit, or patch details are provided.

    00000640
    57.8K followersView on X
CPE platform detail6 entries

6 of 6 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---
OSlinuxlinux_kernel7.1--
OSlinuxlinux_kernel7.1--
OSlinuxlinux_kernel7.1--
OSlinuxlinux_kernel7.1--
OSlinuxlinux_kernel7.1--

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