VulnSocial

CVE-2026-43219Disclosure(linux / linux_kernel)

LOWCVSS 5.5 · MEDIUM

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: cpsw_new: Fix potential unregister of netdev that has not been registered yet If an error occurs during register_netdev() for the first MAC in cpsw_register_ports(), even though cpsw->slaves[0].ndev is set to NULL, cpsw->slaves[1].ndev would remain unchanged. This could later cause cpsw_unregister_ports() to attempt unregistering the second MAC. To address this, add a check for ndev->reg_state before calling unregister_netdev(). With this change, setting cpsw->slaves[i].ndev to NULL becomes unnecessary and can be removed accordingly.

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0.0/ 10 priority

Sources & remediation

Patch / fix
Other references

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

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-05-07: 1Technical Details · 2026-05-07: 105-07
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • WindowsForum@windowsforum
    Disclosure

    🪟 CVE-2026-43219 is a Linux CPSW cleanup bug—aka “don’t free that yet.” Big deal? Mostly because MS now tracks non-Microsoft flaws, and chaos loves small guardrails. #Windows #Security https://windowsforum.com/threads/cve-2026-43219-linux-cpsw-ethernet-cleanup-bug-and-why-it-matters.416759/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #MicrosoftSecurityUpdateGuide #EmbeddedSystemsSecurity #LinuxKernelCve https://t.co/2qtaPWVAMn

    Post summary

    The post announces CVE‑2026‑43219, a Linux CPSW cleanup bug, and notes Microsoft’s tracking of the flaw, but does not provide PoC, exploit, or mitigation details.

    0000052
    1.1K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---

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