cve-2024-40995
Vulnerability from cvelistv5
Published
2024-07-12 12:37
Modified
2024-11-05 09:34
Severity ?
Summary
net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d8a2d287c8a394c0d4653f0c6c7be4c688e5a74Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25987a97eec4d5f897cd04ee1b45170829c610daPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5f926aa96b08b6c47178fe1171e7ae331c695fc2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6fc78d67f51aeb9a542d39a8714e16bc411582d4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a0e497b597df7c4cf2b63fc6e9188b6cabe5335Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c6a7da65a296745535a964be1019ec7691b0cb90Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d864319871b05fadd153e0aede4811ca7008f5d6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0d8a2d287c8a394c0d4653f0c6c7be4c688e5a74Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/25987a97eec4d5f897cd04ee1b45170829c610daPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5f926aa96b08b6c47178fe1171e7ae331c695fc2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6fc78d67f51aeb9a542d39a8714e16bc411582d4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7a0e497b597df7c4cf2b63fc6e9188b6cabe5335Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c6a7da65a296745535a964be1019ec7691b0cb90Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d864319871b05fadd153e0aede4811ca7008f5d6Patch
Impacted products
Vendor Product Version
Linux Linux Version: 4.19
Show details on NVD website

To clipboard 

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This holds\\nrtnl_lock, and causes tasks to hang.\\n\\nReturn -EAGAIN to prevent infinite looping, while keeping documented\\nbehavior.\\n\\n[1]\\n\\nINFO: task kworker/1:0:5088 blocked for more than 143 seconds.\\nNot tainted 6.9.0-rc4-syzkaller-00173-g3cdb45594619 #0\\n\\\"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\\\" disables this message.\\ntask:kworker/1:0 state:D stack:23744 pid:5088 tgid:5088 ppid:2 flags:0x00004000\\nWorkqueue: events_power_efficient reg_check_chans_work\\nCall Trace:\\n\u003cTASK\u003e\\ncontext_switch kernel/sched/core.c:5409 [inline]\\n__schedule+0xf15/0x5d00 kernel/sched/core.c:6746\\n__schedule_loop kernel/sched/core.c:6823 [inline]\\nschedule+0xe7/0x350 kernel/sched/core.c:6838\\nschedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895\\n__mutex_lock_common kernel/locking/mutex.c:684 [inline]\\n__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752\\nwiphy_lock include/net/cfg80211.h:5953 [inline]\\nreg_leave_invalid_chans net/wireless/reg.c:2466 [inline]\\nreg_check_chans_work+0x10a/0x10e0 net/wireless/reg.c:2481\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/sched: act_api: corrige posible bucle infinito en tcf_idr_check_alloc() syzbot encontr\u00f3 tareas pendientes esperando en rtnl_lock [1] Hay un reproductor disponible en el error syzbot. Cuando se env\u00eda una solicitud para agregar varias acciones con el mismo \u00edndice, la segunda solicitud se bloquear\u00e1 para siempre en la primera solicitud. Esto retiene rtnl_lock y hace que las tareas se bloqueen. Devuelve -EAGAIN para evitar bucles infinitos y al mismo tiempo mantener el comportamiento documentado. [1] INFORMACI\u00d3N: tarea kworker/1:0:5088 bloqueada durante m\u00e1s de 143 segundos. 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  }
}


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