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CVE-2026-52909Disclosure(linux / linux_kernel)

LOWCVSS 7.8 · 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: ip6_vti: set netns_immutable on the fallback device. john1988 and Noam Rathaus reported that vti6_init_net() does not set the netns_immutable flag on the per-netns fallback tunnel device (ip6_vti0). Other similar tunnel drivers (like ip6_tunnel, sit, ip6_gre, and ip_tunnel) correctly set this flag during their fallback device initialization to prevent them from being moved to another network namespace.

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0.0/ 10 priority

Sources & remediation

Patch / fix
Other references
Weakness type (CWE)
CWE-863

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • linux_kernel

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
linux
Products
linux_kernel

1 version affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-19: 1Technical Details · 2026-06-19: 106-19
Signal classification1 categories
Disclosure
1100.0%
Referenced assets2 URLs
Full discourse1 post
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-52909 Linux Kernel ip6_vti Fallback Device Missing netns_immutable Flag https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-52909 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1

    Post summary

    The text announces CVE-2026‑52909, a Linux kernel issue involving a missing netns_immutable flag in the ip6_vti fallback device, and directs readers to a vulnerability details page for further information.

    0000035
    4.1K followersView on X
CPE platform detail8 entries

8 of 8 entries

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

Explore more

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