CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-27013 – tun: limit printing rate when illegal packet received by tun dev
https://notcve.org/view.php?id=CVE-2024-27013
In the Linux kernel, the following vulnerability has been resolved: tun: limit printing rate when illegal packet received by tun dev vhost_worker will call tun call backs to receive packets. If too many illegal packets arrives, tun_do_read will keep dumping packet contents. When console is enabled, it will costs much more cpu time to dump packet and soft lockup will be detected. net_ratelimit mechanism can be used to limit the dumping rate. PID: 33036 TASK: ffff949da6f20000 CPU: 23 COMMAND: "vhost-32980" #0 [fffffe00003fce50] crash_nmi_callback at ffffffff89249253 #1 [fffffe00003fce58] nmi_handle at ffffffff89225fa3 #2 [fffffe00003fceb0] default_do_nmi at ffffffff8922642e #3 [fffffe00003fced0] do_nmi at ffffffff8922660d #4 [fffffe00003fcef0] end_repeat_nmi at ffffffff89c01663 [exception RIP: io_serial_in+20] RIP: ffffffff89792594 RSP: ffffa655314979e8 RFLAGS: 00000002 RAX: ffffffff89792500 RBX: ffffffff8af428a0 RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000000005 RDI: ffffffff8af428a0 RBP: 0000000000002710 R8: 0000000000000004 R9: 000000000000000f R10: 0000000000000000 R11: ffffffff8acbf64f R12: 0000000000000020 R13: ffffffff8acbf698 R14: 0000000000000058 R15: 0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #5 [ffffa655314979e8] io_serial_in at ffffffff89792594 #6 [ffffa655314979e8] wait_for_xmitr at ffffffff89793470 #7 [ffffa65531497a08] serial8250_console_putchar at ffffffff897934f6 #8 [ffffa65531497a20] uart_console_write at ffffffff8978b605 #9 [ffffa65531497a48] serial8250_console_write at ffffffff89796558 #10 [ffffa65531497ac8] console_unlock at ffffffff89316124 #11 [ffffa65531497b10] vprintk_emit at ffffffff89317c07 #12 [ffffa65531497b68] printk at ffffffff89318306 #13 [ffffa65531497bc8] print_hex_dump at ffffffff89650765 #14 [ffffa65531497ca8] tun_do_read at ffffffffc0b06c27 [tun] #15 [ffffa65531497d38] tun_recvmsg at ffffffffc0b06e34 [tun] #16 [ffffa65531497d68] handle_rx at ffffffffc0c5d682 [vhost_net] #17 [ffffa65531497ed0] vhost_worker at ffffffffc0c644dc [vhost] #18 [ffffa65531497f10] kthread at ffffffff892d2e72 #19 [ffffa65531497f50] ret_from_fork at ffffffff89c0022f En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tun: limita la velocidad de impresión cuando el paquete ilegal recibido por tun dev vhost_worker llamará a tun para recibir paquetes. Si llegan demasiados paquetes ilegales, tun_do_read seguirá descargando el contenido de los paquetes. Cuando la consola está habilitada, le costará mucho más tiempo a la CPU volcar el paquete y se detectará un bloqueo suave. El mecanismo net_ratelimit se puede utilizar para limitar la tasa de dumping. • https://git.kernel.org/stable/c/ef3db4a5954281bc1ea49a4739c88eaea091dc71 https://git.kernel.org/stable/c/68459b8e3ee554ce71878af9eb69659b9462c588 https://git.kernel.org/stable/c/4b0dcae5c4797bf31c63011ed62917210d3fdac3 https://git.kernel.org/stable/c/14cdb43dbc827e18ac7d5b30c5b4c676219f1421 https://git.kernel.org/stable/c/a50dbeca28acf7051dfa92786b85f704c75db6eb https://git.kernel.org/stable/c/62e27ef18eb4f0d33bbae8e9ef56b99696a74713 https://git.kernel.org/stable/c/40f4ced305c6c47487d3cd8da54676e2acc1a6ad https://git.kernel.org/stable/c/52854101180beccdb9dc2077a3bea31b6 • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2024-27011 – netfilter: nf_tables: fix memleak in map from abort path
https://notcve.org/view.php?id=CVE-2024-27011
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memleak in map from abort path The delete set command does not rely on the transaction object for element removal, therefore, a combination of delete element + delete set from the abort path could result in restoring twice the refcount of the mapping. Check for inactive element in the next generation for the delete element command in the abort path, skip restoring state if next generation bit has been already cleared. This is similar to the activate logic using the set walk iterator. [ 6170.286929] ------------[ cut here ]------------ [ 6170.286939] WARNING: CPU: 6 PID: 790302 at net/netfilter/nf_tables_api.c:2086 nf_tables_chain_destroy+0x1f7/0x220 [nf_tables] [ 6170.287071] Modules linked in: [...] [ 6170.287633] CPU: 6 PID: 790302 Comm: kworker/6:2 Not tainted 6.9.0-rc3+ #365 [ 6170.287768] RIP: 0010:nf_tables_chain_destroy+0x1f7/0x220 [nf_tables] [ 6170.287886] Code: df 48 8d 7d 58 e8 69 2e 3b df 48 8b 7d 58 e8 80 1b 37 df 48 8d 7d 68 e8 57 2e 3b df 48 8b 7d 68 e8 6e 1b 37 df 48 89 ef eb c4 <0f> 0b 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 0f [ 6170.287895] RSP: 0018:ffff888134b8fd08 EFLAGS: 00010202 [ 6170.287904] RAX: 0000000000000001 RBX: ffff888125bffb28 RCX: dffffc0000000000 [ 6170.287912] RDX: 0000000000000003 RSI: ffffffffa20298ab RDI: ffff88811ebe4750 [ 6170.287919] RBP: ffff88811ebe4700 R08: ffff88838e812650 R09: fffffbfff0623a55 [ 6170.287926] R10: ffffffff8311d2af R11: 0000000000000001 R12: ffff888125bffb10 [ 6170.287933] R13: ffff888125bffb10 R14: dead000000000122 R15: dead000000000100 [ 6170.287940] FS: 0000000000000000(0000) GS:ffff888390b00000(0000) knlGS:0000000000000000 [ 6170.287948] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6170.287955] CR2: 00007fd31fc00710 CR3: 0000000133f60004 CR4: 00000000001706f0 [ 6170.287962] Call Trace: [ 6170.287967] <TASK> [ 6170.287973] ? __warn+0x9f/0x1a0 [ 6170.287986] ? nf_tables_chain_destroy+0x1f7/0x220 [nf_tables] [ 6170.288092] ? report_bug+0x1b1/0x1e0 [ 6170.287986] ? • https://git.kernel.org/stable/c/591054469b3eef34bc097c30fae8ededddf8d796 https://git.kernel.org/stable/c/49d0e656d19dfb2d4d7c230e4a720d37b3decff6 https://git.kernel.org/stable/c/86a1471d7cde792941109b93b558b5dc078b9ee9 https://access.redhat.com/security/cve/CVE-2024-27011 https://bugzilla.redhat.com/show_bug.cgi?id=2278277 •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2024-27010 – net/sched: Fix mirred deadlock on device recursion
https://notcve.org/view.php?id=CVE-2024-27010
In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix mirred deadlock on device recursion When the mirred action is used on a classful egress qdisc and a packet is mirrored or redirected to self we hit a qdisc lock deadlock. See trace below. [..... other info removed for brevity....] [ 82.890906] [ 82.890906] ============================================ [ 82.890906] WARNING: possible recursive locking detected [ 82.890906] 6.8.0-05205-g77fadd89fe2d-dirty #213 Tainted: G W [ 82.890906] -------------------------------------------- [ 82.890906] ping/418 is trying to acquire lock: [ 82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, at: __dev_queue_xmit+0x1778/0x3550 [ 82.890906] [ 82.890906] but task is already holding lock: [ 82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, at: __dev_queue_xmit+0x1778/0x3550 [ 82.890906] [ 82.890906] other info that might help us debug this: [ 82.890906] Possible unsafe locking scenario: [ 82.890906] [ 82.890906] CPU0 [ 82.890906] ---- [ 82.890906] lock(&sch->q.lock); [ 82.890906] lock(&sch->q.lock); [ 82.890906] [ 82.890906] *** DEADLOCK *** [ 82.890906] [..... other info removed for brevity....] Example setup (eth0->eth0) to recreate tc qdisc add dev eth0 root handle 1: htb default 30 tc filter add dev eth0 handle 1: protocol ip prio 2 matchall \ action mirred egress redirect dev eth0 Another example(eth0->eth1->eth0) to recreate tc qdisc add dev eth0 root handle 1: htb default 30 tc filter add dev eth0 handle 1: protocol ip prio 2 matchall \ action mirred egress redirect dev eth1 tc qdisc add dev eth1 root handle 1: htb default 30 tc filter add dev eth1 handle 1: protocol ip prio 2 matchall \ action mirred egress redirect dev eth0 We fix this by adding an owner field (CPU id) to struct Qdisc set after root qdisc is entered. When the softirq enters it a second time, if the qdisc owner is the same CPU, the packet is dropped to break the loop. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net/sched: corrige el punto muerto reflejado en la recursividad del dispositivo Cuando la acción reflejada se utiliza en una qdisc de salida con clase y un paquete se refleja o redirige a uno mismo, llegamos a un punto muerto de bloqueo de qdisc. Vea el rastro a continuación. [..... otra información eliminada por brevedad....] [ 82.890906] [ 82.890906] ============================= ================ [82.890906] ADVERTENCIA: posible bloqueo recursivo detectado [82.890906] 6.8.0-05205-g77fadd89fe2d-dirty #213 Contaminado: GW [82.890906] ----- --------------------------------------- [ 82.890906] ping/418 está intentando adquirir el bloqueo : [ 82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, en: __dev_queue_xmit+0x1778/0x3550 [ 82.890906] [ 82.890906] pero la tarea ya mantiene el bloqueo: [ 82.890906] 88006994110 (&sch->q.lock){+.-.}-{3:3}, en: __dev_queue_xmit+0x1778/0x3550 [ 82.890906] [ 82.890906] otra información que podría ayudarnos a depurar esto: [ 82.890906] Posible escenario de bloqueo inseguro : [ 82.890906] [ 82.890906] CPU0 [ 82.890906] ---- [ 82.890906] bloqueo(&sch->q.lock); [ 82.890906] bloqueo(&sch->q.lock); [ 82.890906] [ 82.890906] *** DEADLOCK *** [ 82.890906] [..... otra información eliminada por brevedad....] Ejemplo de configuración (eth0->eth0) para recrear tc qdisc agregar dev eth0 identificador raíz 1 : htb default 30 tc filter add dev eth0 handle 1: protocolo ip prio 2 matchall \ action mirred egress redirigir dev eth0 Otro ejemplo (eth0->eth1->eth0) para recrear tc qdisc add dev eth0 root handle 1: htb default 30 tc filtro agregar dev eth0 identificador 1: protocolo ip prio 2 matchall \ acción redirección de salida reflejada dev eth1 tc qdisc agregar dev eth1 identificador raíz 1: htb predeterminado 30 tc filtro agregar dev eth1 identificador 1: protocolo ip prio 2 matchall \ acción duplicada redirección de salida dev eth0 Solucionamos esto agregando un campo de propietario (ID de CPU) a la estructura Qdisc establecida después de ingresar la qdisc raíz. • https://git.kernel.org/stable/c/e578d9c02587d57bfa7b560767c698a668a468c6 https://git.kernel.org/stable/c/e6b90468da4dae2281a6e381107f411efb48b0ef https://git.kernel.org/stable/c/0f022d32c3eca477fbf79a205243a6123ed0fe11 https://access.redhat.com/security/cve/CVE-2024-27010 https://bugzilla.redhat.com/show_bug.cgi?id=2278279 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-27008 – drm: nv04: Fix out of bounds access
https://notcve.org/view.php?id=CVE-2024-27008
In the Linux kernel, the following vulnerability has been resolved: drm: nv04: Fix out of bounds access When Output Resource (dcb->or) value is assigned in fabricate_dcb_output(), there may be out of bounds access to dac_users array in case dcb->or is zero because ffs(dcb->or) is used as index there. The 'or' argument of fabricate_dcb_output() must be interpreted as a number of bit to set, not value. Utilize macros from 'enum nouveau_or' in calls instead of hardcoding. Found by Linux Verification Center (linuxtesting.org) with SVACE. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm: nv04: corregir el acceso fuera de los límites Cuando se asigna el valor del recurso de salida (dcb->or) en fabricate_dcb_output(), puede haber acceso fuera de los límites a la matriz dac_users en caso de que dcb->or es cero porque ffs(dcb->or) se usa como índice allí. El argumento 'o' de fabricate_dcb_output() debe interpretarse como un número de bits a configurar, no como un valor. Utilice macros de 'enum nouveau_or' en las llamadas en lugar de codificarlas. Encontrado por el Centro de verificación de Linux (linuxtesting.org) con SVACE. • https://git.kernel.org/stable/c/2e5702aff39532662198459726c624d5eadbdd78 https://git.kernel.org/stable/c/c2b97f26f081ceec3298151481687071075a25cb https://git.kernel.org/stable/c/5050ae879a828d752b439e3827aac126709da6d1 https://git.kernel.org/stable/c/097c7918fcfa1dee233acfd1f3029f00c3bc8062 https://git.kernel.org/stable/c/df0991da7db846f7fa4ec6740350f743d3b69b04 https://git.kernel.org/stable/c/5fd4b090304e450aa0e7cc9cc2b4873285c6face https://git.kernel.org/stable/c/6690cc2732e2a8d0eaca44dcbac032a4b0148042 https://git.kernel.org/stable/c/26212da39ee14a52c76a202c6ae5153a8 •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-27004 – clk: Get runtime PM before walking tree during disable_unused
https://notcve.org/view.php?id=CVE-2024-27004
In the Linux kernel, the following vulnerability has been resolved: clk: Get runtime PM before walking tree during disable_unused Doug reported [1] the following hung task: INFO: task swapper/0:1 blocked for more than 122 seconds. Not tainted 5.15.149-21875-gf795ebc40eb8 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:swapper/0 state:D stack: 0 pid: 1 ppid: 0 flags:0x00000008 Call trace: __switch_to+0xf4/0x1f4 __schedule+0x418/0xb80 schedule+0x5c/0x10c rpm_resume+0xe0/0x52c rpm_resume+0x178/0x52c __pm_runtime_resume+0x58/0x98 clk_pm_runtime_get+0x30/0xb0 clk_disable_unused_subtree+0x58/0x208 clk_disable_unused_subtree+0x38/0x208 clk_disable_unused_subtree+0x38/0x208 clk_disable_unused_subtree+0x38/0x208 clk_disable_unused_subtree+0x38/0x208 clk_disable_unused+0x4c/0xe4 do_one_initcall+0xcc/0x2d8 do_initcall_level+0xa4/0x148 do_initcalls+0x5c/0x9c do_basic_setup+0x24/0x30 kernel_init_freeable+0xec/0x164 kernel_init+0x28/0x120 ret_from_fork+0x10/0x20 INFO: task kworker/u16:0:9 blocked for more than 122 seconds. Not tainted 5.15.149-21875-gf795ebc40eb8 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u16:0 state:D stack: 0 pid: 9 ppid: 2 flags:0x00000008 Workqueue: events_unbound deferred_probe_work_func Call trace: __switch_to+0xf4/0x1f4 __schedule+0x418/0xb80 schedule+0x5c/0x10c schedule_preempt_disabled+0x2c/0x48 __mutex_lock+0x238/0x488 __mutex_lock_slowpath+0x1c/0x28 mutex_lock+0x50/0x74 clk_prepare_lock+0x7c/0x9c clk_core_prepare_lock+0x20/0x44 clk_prepare+0x24/0x30 clk_bulk_prepare+0x40/0xb0 mdss_runtime_resume+0x54/0x1c8 pm_generic_runtime_resume+0x30/0x44 __genpd_runtime_resume+0x68/0x7c genpd_runtime_resume+0x108/0x1f4 __rpm_callback+0x84/0x144 rpm_callback+0x30/0x88 rpm_resume+0x1f4/0x52c rpm_resume+0x178/0x52c __pm_runtime_resume+0x58/0x98 __device_attach+0xe0/0x170 device_initial_probe+0x1c/0x28 bus_probe_device+0x3c/0x9c device_add+0x644/0x814 mipi_dsi_device_register_full+0xe4/0x170 devm_mipi_dsi_device_register_full+0x28/0x70 ti_sn_bridge_probe+0x1dc/0x2c0 auxiliary_bus_probe+0x4c/0x94 really_probe+0xcc/0x2c8 __driver_probe_device+0xa8/0x130 driver_probe_device+0x48/0x110 __device_attach_driver+0xa4/0xcc bus_for_each_drv+0x8c/0xd8 __device_attach+0xf8/0x170 device_initial_probe+0x1c/0x28 bus_probe_device+0x3c/0x9c deferred_probe_work_func+0x9c/0xd8 process_one_work+0x148/0x518 worker_thread+0x138/0x350 kthread+0x138/0x1e0 ret_from_fork+0x10/0x20 The first thread is walking the clk tree and calling clk_pm_runtime_get() to power on devices required to read the clk hardware via struct clk_ops::is_enabled(). This thread holds the clk prepare_lock, and is trying to runtime PM resume a device, when it finds that the device is in the process of resuming so the thread schedule()s away waiting for the device to finish resuming before continuing. The second thread is runtime PM resuming the same device, but the runtime resume callback is calling clk_prepare(), trying to grab the prepare_lock waiting on the first thread. This is a classic ABBA deadlock. To properly fix the deadlock, we must never runtime PM resume or suspend a device with the clk prepare_lock held. Actually doing that is near impossible today because the global prepare_lock would have to be dropped in the middle of the tree, the device runtime PM resumed/suspended, and then the prepare_lock grabbed again to ensure consistency of the clk tree topology. • https://git.kernel.org/stable/c/9a34b45397e5a389e25a0c5d39983300d040e5e2 https://git.kernel.org/stable/c/253ab38d1ee652a596942156978a233970d185ba https://git.kernel.org/stable/c/4af115f1a20a3d9093586079206ee37c2ac55123 https://git.kernel.org/stable/c/a29ec0465dce0b871003698698ac6fa92c9a5034 https://git.kernel.org/stable/c/a424e713e0cc33d4b969cfda25b9f46df4d7b5bc https://git.kernel.org/stable/c/60ff482c4205a5aac3b0595ab794cfd62295dab5 https://git.kernel.org/stable/c/115554862294397590088ba02f11f2aba6d5016c https://git.kernel.org/stable/c/e581cf5d216289ef292d1a4036d53ce90 •