cve-2026-23438

About this tag
CVE-2026-23438 is a Linux kernel vulnerability in the Marvell mvpp2 Ethernet driver, causing a NULL pointer dereference during buffer switching. The bug is triggered when the driver updates flow-control state without verifying that global TX flow control is enabled. A routine MTU change can crash the kernel on systems where the CM3 SRAM block is missing from the device tree. The fix is minimal, but the flaw highlights how unchecked assumptions in mature networking code can lead to system crashes. This tag covers discussions, analysis, and mitigation strategies for CVE-2026-23438, focusing on its impact on Linux systems using the mvpp2 driver.

  1. Linux mvpp2 NULL pointer crash CVE-2026-23438 triggered by MTU changes

    A newly tracked Linux kernel flaw in the Marvell mvpp2 Ethernet driver shows how a tiny missing condition can still bring down a system, and this one is now cataloged as CVE-2026-23438. The bug is a NULL pointer dereference in the buffer-switching path, triggered when the driver updates...
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