What’s Vulnerable › Vulnerabilities

CVE-2026-23179: nvmet-tcp: fixup hang in nvmet_tcp_listen_data_ready()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-14 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: fixup hang in nvmet_tcp_listen_data_ready() When the socket is closed while in TCP_LISTEN a callback is run to flush all outstanding packets, which in turns calls nvmet_tcp_listen_data_ready() with the sk_callback_lock held. So we need to check if we are in TCP_LISTEN before attempting to get the sk_callback_lock() to avoid a deadlock.

Affected products

• Linux kernel: 6.7 — fixed in 6.19

How to fix

Upgrade to a fixed version: Linux kernel 6.19. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1c90f930e7b410dd2d75a2a19a85e19c64e98ad5
• https://git.kernel.org/stable/c/2fa8961d3a6a1c2395d8d560ffed2c782681bade
• https://git.kernel.org/stable/c/6e0c7503a5803d568d56a9f9bca662cd94a14908

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