CVE-2024-38597

CVE-2024-38597: vulnerability in Linux

eth: sungem: remove .ndo_poll_controller to avoid deadlocks

Published · Updated

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
exploitation probability
0.2%top 93% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved: eth: sungem: remove .ndo_poll_controller to avoid deadlocks Erhard reports netpoll warnings from sungem: netpoll_send_skb_on_dev(): eth0 enabled interrupts in poll (gem_start_xmit+0x0/0x398) WARNING: CPU: 1 PID: 1 at net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c gem_poll_controller() disables interrupts, which may sleep. We can't sleep in netpoll, it has interrupts disabled completely. Strangely, gem_poll_controller() doesn't even poll the completions, and instead acts as if an interrupt has fired so it just schedules NAPI and exits. None of this has been necessary for years, since netpoll invokes NAPI directly.
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6https://git.kernel.org/stable/c/5de5aeb98f9a000adb0db184e32765e4815d860bhttps://git.kernel.org/stable/c/6400d205fbbcbcf9b8510157e1f379c1d7e2e937https://git.kernel.org/stable/c/ac0a230f719b02432d8c7eba7615ebd691da86f4https://git.kernel.org/stable/c/e22b23f5888a065d084e87db1eec639c445e677fhttps://git.kernel.org/stable/c/faf94f1eb8a34b2c31b2042051ef36f63420eccehttps://git.kernel.org/stable/c/fbeeb55dbb33d562149c57e794f06b7414e44289