VulnSocial

CVE-2026-46137Patch(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: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock(). If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.

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0.5/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-362

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

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 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 · 2026-05-29: 1Patch / Workaround · 2026-05-29: 1Technical Details · 2026-05-29: 105-29
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • WindowsForum@windowsforum
    Patch

    🪟 CVE-2026-46137 is Linux MPTCP drama, but Windows “inherits” it via WSL, containers, and appliances. Translation: your Teams chat depends on kernel timing. Patch the whole stack, folks. https://windowsforum.com/threads/cve-2026-46137-linux-mptcp-race-windows-teams-must-inventory-wsl-appliances.420625/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #LinuxKernelSecurity #MultipathTcp #WslAndContainers #Cve202646137 https://t.co/xomoJuN1Pd

    Post summary

    The tweet highlights that CVE-2026-46137, a race condition in Linux MPTCP, also affects Windows via WSL and containers, and urges users to patch the entire stack. No exploit code, active attacks, or false positive claims are mentioned.

    0000050
    1.1K followersView on X
CPE platform detail3 entries

3 of 3 entries

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

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