CVE-2024-38597

eth: sungem: remove .ndo_poll_controller to avoid deadlocks

MEDIUM

5.5

CVSS Score

Published: June 19, 2024 at 01:45 PM UTC

Updated: June 17, 2026 at 07:40 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.1 ≤ v < 5.10.2193.1 ≤ v < 5.15.1613.1 ≤ v < 6.1.933.1 ≤ v < 6.103.1 ≤ v < 6.6.333.1 ≤ v < 6.8.123.1 ≤ v < 6.9.35.11 ≤ v < 5.15.1615.16 ≤ v < 6.1.936.2 ≤ v < 6.6.336.7 ≤ v < 6.8.126.9 ≤ v < 6.9.33.1fe09bb619096a0aa139210748ddc668c2dbe2308

Vendor states this is fixed in 476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6 (fixed)

Vendor states this is fixed in 5de5aeb98f9a000adb0db184e32765e4815d860b (fixed)

Vendor states this is fixed in 6400d205fbbcbcf9b8510157e1f379c1d7e2e937 (fixed)

Vendor states this is fixed in ac0a230f719b02432d8c7eba7615ebd691da86f4 (fixed)

Vendor states this is fixed in e22b23f5888a065d084e87db1eec639c445e677f (fixed)

Vendor states this is fixed in faf94f1eb8a34b2c31b2042051ef36f63420ecce (fixed)

Vendor states this is fixed in fbeeb55dbb33d562149c57e794f06b7414e44289 (fixed)

Vendor states this is fixed in 3.1 (unaffected)

Vendor states this is fixed in 5.10.219 (unaffected)

Vendor states this is fixed in 5.15.161 (unaffected)

Vendor states this is fixed in 6.1.93 (unaffected)

Vendor states this is fixed in 6.10 (unaffected)