CVE-2024-38597

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxfe09bb619096a0aa139210748ddc668c2dbe2308 < e22b23f5888a065d084e87db1eec639c445e677faffected
LinuxLinuxfe09bb619096a0aa139210748ddc668c2dbe2308 < fbeeb55dbb33d562149c57e794f06b7414e44289affected
LinuxLinuxfe09bb619096a0aa139210748ddc668c2dbe2308 < 476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6affected
LinuxLinuxfe09bb619096a0aa139210748ddc668c2dbe2308 < 5de5aeb98f9a000adb0db184e32765e4815d860baffected
LinuxLinuxfe09bb619096a0aa139210748ddc668c2dbe2308 < faf94f1eb8a34b2c31b2042051ef36f63420ecceaffected
LinuxLinuxfe09bb619096a0aa139210748ddc668c2dbe2308 < 6400d205fbbcbcf9b8510157e1f379c1d7e2e937affected
LinuxLinuxfe09bb619096a0aa139210748ddc668c2dbe2308 < ac0a230f719b02432d8c7eba7615ebd691da86f4affected
LinuxLinux3.1affected
LinuxLinux0 < 3.1unaffected
LinuxLinux5.10.219 <= 5.10.*unaffected
LinuxLinux5.15.161 <= 5.15.*unaffected
LinuxLinux6.1.93 <= 6.1.*unaffected
LinuxLinux6.6.33 <= 6.6.*unaffected
LinuxLinux6.8.12 <= 6.8.*unaffected
LinuxLinux6.9.3 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References