CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-26781 – mptcp: fix possible deadlock in subflow diag
https://notcve.org/view.php?id=CVE-2024-26781
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix possible deadlock in subflow diag Syzbot and Eric reported a lockdep splat in the subflow diag: WARNING: possible circular locking dependency detected 6.8.0-rc4-syzkaller-00212-g40b9385dd8e6 #0 Not tainted syz-executor.2/24141 is trying to acquire lock: ffff888045870130 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_diag_put_ulp net/ipv4/tcp_diag.c:100 [inline] ffff888045870130 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_diag_get_aux+0x738/0x830 net/ipv4/tcp_diag.c:137 but task is already holding lock: ffffc9000135e488 (&h->lhash2[i].lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffffc9000135e488 (&h->lhash2[i].lock){+.+.}-{2:2}, at: inet_diag_dump_icsk+0x39f/0x1f80 net/ipv4/inet_diag.c:1038 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&h->lhash2[i].lock){+.+.}-{2:2}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] __inet_hash+0x335/0xbe0 net/ipv4/inet_hashtables.c:743 inet_csk_listen_start+0x23a/0x320 net/ipv4/inet_connection_sock.c:1261 __inet_listen_sk+0x2a2/0x770 net/ipv4/af_inet.c:217 inet_listen+0xa3/0x110 net/ipv4/af_inet.c:239 rds_tcp_listen_init+0x3fd/0x5a0 net/rds/tcp_listen.c:316 rds_tcp_init_net+0x141/0x320 net/rds/tcp.c:577 ops_init+0x352/0x610 net/core/net_namespace.c:136 __register_pernet_operations net/core/net_namespace.c:1214 [inline] register_pernet_operations+0x2cb/0x660 net/core/net_namespace.c:1283 register_pernet_device+0x33/0x80 net/core/net_namespace.c:1370 rds_tcp_init+0x62/0xd0 net/rds/tcp.c:735 do_one_initcall+0x238/0x830 init/main.c:1236 do_initcall_level+0x157/0x210 init/main.c:1298 do_initcalls+0x3f/0x80 init/main.c:1314 kernel_init_freeable+0x42f/0x5d0 init/main.c:1551 kernel_init+0x1d/0x2a0 init/main.c:1441 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 -> #0 (k-sk_lock-AF_INET6){+.+.}-{0:0}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x18ca/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 lock_sock_fast include/net/sock.h:1723 [inline] subflow_get_info+0x166/0xd20 net/mptcp/diag.c:28 tcp_diag_put_ulp net/ipv4/tcp_diag.c:100 [inline] tcp_diag_get_aux+0x738/0x830 net/ipv4/tcp_diag.c:137 inet_sk_diag_fill+0x10ed/0x1e00 net/ipv4/inet_diag.c:345 inet_diag_dump_icsk+0x55b/0x1f80 net/ipv4/inet_diag.c:1061 __inet_diag_dump+0x211/0x3a0 net/ipv4/inet_diag.c:1263 inet_diag_dump_compat+0x1c1/0x2d0 net/ipv4/inet_diag.c:1371 netlink_dump+0x59b/0xc80 net/netlink/af_netlink.c:2264 __netlink_dump_start+0x5df/0x790 net/netlink/af_netlink.c:2370 netlink_dump_start include/linux/netlink.h:338 [inline] inet_diag_rcv_msg_compat+0x209/0x4c0 net/ipv4/inet_diag.c:1405 sock_diag_rcv_msg+0xe7/0x410 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:280 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 As noted by Eric we can break the lock dependency chain avoid dumping ---truncated--- En el kernel de Linux, se resolvió la siguiente vulnerabilidad: mptcp: corrige un posible punto muerto en el diagnóstico de subflujo Syzbot y Eric informaron sobre un bloqueo de bloqueo en el diagnóstico de subflujo: ADVERTENCIA: se detectó posible dependencia de bloqueo circular 6.8.0-rc4-syzkaller-00212-g40b9385dd8e6 #0 Not tainted syz-executor.2/24141 is trying to acquire lock: ffff888045870130 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_diag_put_ulp net/ipv4/tcp_diag.c:100 [inline] ffff888045870130 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_diag_get_aux+0x738/0x830 net/ipv4/tcp_diag.c:137 but task is already holding lock: ffffc9000135e488 (&h->lhash2[i].lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffffc9000135e488 (&h->lhash2[i].lock){+.+.}-{2:2}, at: inet_diag_dump_icsk+0x39f/0x1f80 net/ipv4/inet_diag.c:1038 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&h->lhash2[i].lock){+.+.}-{2:2}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] __inet_hash+0x335/0xbe0 net/ipv4/inet_hashtables.c:743 inet_csk_listen_start+0x23a/0x320 net/ipv4/inet_connection_sock.c:1261 __inet_listen_sk+0x2a2/0x770 net/ipv4/af_inet.c:217 inet_listen+0xa3/0x110 net/ipv4/af_inet.c:239 rds_tcp_listen_init+0x3fd/0x5a0 net/rds/tcp_listen.c:316 rds_tcp_init_net+0x141/0x320 net/rds/tcp.c:577 ops_init+0x352/0x610 net/core/net_namespace.c:136 __register_pernet_operations net/core/net_namespace.c:1214 [inline] register_pernet_operations+0x2cb/0x660 net/core/net_namespace.c:1283 register_pernet_device+0x33/0x80 net/core/net_namespace.c:1370 rds_tcp_init+0x62/0xd0 net/rds/tcp.c:735 do_one_initcall+0x238/0x830 init/main.c:1236 do_initcall_level+0x157/0x210 init/main.c:1298 do_initcalls+0x3f/0x80 init/main.c:1314 kernel_init_freeable+0x42f/0x5d0 init/main.c:1551 kernel_init+0x1d/0x2a0 init/main.c:1441 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 -> #0 (k-sk_lock-AF_INET6){+.+.}-{0:0}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x18ca/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 lock_sock_fast include/net/sock.h:1723 [inline] subflow_get_info+0x166/0xd20 net/mptcp/diag.c:28 tcp_diag_put_ulp net/ipv4/tcp_diag.c:100 [inline] tcp_diag_get_aux+0x738/0x830 net/ipv4/tcp_diag.c:137 inet_sk_diag_fill+0x10ed/0x1e00 net/ipv4/inet_diag.c:345 inet_diag_dump_icsk+0x55b/0x1f80 net/ipv4/inet_diag.c:1061 __inet_diag_dump+0x211/0x3a0 net/ipv4/inet_diag.c:1263 inet_diag_dump_compat+0x1c1/0x2d0 net/ipv4/inet_diag.c:1371 netlink_dump+0x59b/0xc80 net/netlink/af_netlink.c:2264 __netlink_dump_start+0x5df/0x790 net/netlink/af_netlink.c:2370 netlink_dump_start include/linux/netlink.h:338 [inline] inet_diag_rcv_msg_compat+0x209/0x4c0 net/ipv4/inet_diag.c:1405 sock_diag_rcv_msg+0xe7/0x410 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:280 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Como señaló Eric, podemos romper la cadena de dependencia de bloqueo evitar el vertido ---truncado--- • https://git.kernel.org/stable/c/8affdbb3e2ef6b6a3a467b87dc336dc601dc2ed9 https://git.kernel.org/stable/c/7d6e8d7ee13b876e762b11f4ec210876ab7aec84 https://git.kernel.org/stable/c/71787c665d09a970b9280c285181d3a2d1bf3bb0 https://git.kernel.org/stable/c/e074c8297ee421e7ff352404262fe0e042954ab7 https://git.kernel.org/stable/c/298ac00da8e6bc2dcd690b45108acbd944c347d3 https://git.kernel.org/stable/c/70e5b013538d5e4cb421afed431a5fcd2a5d49ee https://git.kernel.org/stable/c/cc32ba2fdf3f8b136619fff551f166ba51ec856d https://git.kernel.org/stable/c/f27d319df055629480b84b9288a502337 •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26779 – wifi: mac80211: fix race condition on enabling fast-xmit
https://notcve.org/view.php?id=CVE-2024-26779
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix race condition on enabling fast-xmit fast-xmit must only be enabled after the sta has been uploaded to the driver, otherwise it could end up passing the not-yet-uploaded sta via drv_tx calls to the driver, leading to potential crashes because of uninitialized drv_priv data. Add a missing sta->uploaded check and re-check fast xmit after inserting a sta. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mac80211: corrige la condición de ejecución al habilitar fast-xmit fast-xmit solo debe habilitarse después de que el sta se haya cargado en el controlador; de lo contrario, podría terminar pasando el error sta aún cargada a través de llamadas drv_tx al controlador, lo que genera posibles fallas debido a datos drv_priv no inicializados. Agregue una estación faltante->comprobación cargada y vuelva a verificar la transmisión rápida después de insertar una estación. A vulnerability was found in the mac80211 driver in the Linux kernel. This issue could lead to potential crashes or memory corruption due to of a situation where the driver attempts to utilize data structures that haven't been fully initialized yet. • https://git.kernel.org/stable/c/76fad1174a0cae6fc857b9f88b261a2e4f07d587 https://git.kernel.org/stable/c/85720b69aef177318f4a18efbcc4302228a340e5 https://git.kernel.org/stable/c/5ffab99e070b9f8ae0cf60c3c3602b84eee818dd https://git.kernel.org/stable/c/88c18fd06608b3adee547102505d715f21075c9d https://git.kernel.org/stable/c/eb39bb548bf974acad7bd6780fe11f9e6652d696 https://git.kernel.org/stable/c/54b79d8786964e2f840e8a2ec4a9f9a50f3d4954 https://git.kernel.org/stable/c/281280276b70c822f55ce15b661f6d1d3228aaa9 https://git.kernel.org/stable/c/bcbc84af1183c8cf3d1ca9b78540c2185 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26778 – fbdev: savage: Error out if pixclock equals zero
https://notcve.org/view.php?id=CVE-2024-26778
In the Linux kernel, the following vulnerability has been resolved: fbdev: savage: Error out if pixclock equals zero The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error. Although pixclock is checked in savagefb_decode_var(), but it is not checked properly in savagefb_probe(). Fix this by checking whether pixclock is zero in the function savagefb_check_var() before info->var.pixclock is used as the divisor. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: savage: error si pixclock es igual a cero. El programa de espacio de usuario podría pasar cualquier valor al controlador a través de la interfaz ioctl(). • https://git.kernel.org/stable/c/224453de8505aede1890f007be973925a3edf6a1 https://git.kernel.org/stable/c/84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff https://git.kernel.org/stable/c/512ee6d6041e007ef5bf200c6e388e172a2c5b24 https://git.kernel.org/stable/c/8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1 https://git.kernel.org/stable/c/070398d32c5f3ab0e890374904ad94551c76aec4 https://git.kernel.org/stable/c/bc3c2e58d73b28b9a8789fca84778ee165a72d13 https://git.kernel.org/stable/c/a9ca4e80d23474f90841251f4ac0d941fa337a01 https://git.kernel.org/stable/c/04e5eac8f3ab2ff52fa191c187a46d4fd •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26777 – fbdev: sis: Error out if pixclock equals zero
https://notcve.org/view.php?id=CVE-2024-26777
In the Linux kernel, the following vulnerability has been resolved: fbdev: sis: Error out if pixclock equals zero The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error. In sisfb_check_var(), var->pixclock is used as a divisor to caculate drate before it is checked against zero. Fix this by checking it at the beginning. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: sis: error si pixclock es igual a cero. El programa de espacio de usuario podría pasar cualquier valor al controlador a través de la interfaz ioctl(). • https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7e https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207 https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313 https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1 https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99 https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239 •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-26776 – spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected
https://notcve.org/view.php?id=CVE-2024-26776
In the Linux kernel, the following vulnerability has been resolved: spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected Return IRQ_NONE from the interrupt handler when no interrupt was detected. Because an empty interrupt will cause a null pointer error: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Call trace: complete+0x54/0x100 hisi_sfc_v3xx_isr+0x2c/0x40 [spi_hisi_sfc_v3xx] __handle_irq_event_percpu+0x64/0x1e0 handle_irq_event+0x7c/0x1cc En el kernel de Linux, se resolvió la siguiente vulnerabilidad: spi: hisi-sfc-v3xx: Devuelve IRQ_NONE si no se detectaron interrupciones. Devuelve IRQ_NONE del controlador de interrupciones cuando no se detectó ninguna interrupción. Porque una interrupción vacía causará un error de puntero nulo: No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000008 Seguimiento de llamadas: completo+0x54/0x100 hisi_sfc_v3xx_isr+0x2c/0x40 [spi_hisi_sfc_v3xx] __handle_irq_event_percpu+0x64/0x1e0 handle_ evento_irq+0x7c/0x1cc • https://git.kernel.org/stable/c/e94da8aca2e78ef9ecca02eb211869eacd5504e5 https://git.kernel.org/stable/c/0399d7eba41d9b28f5bdd7757ec21a5b7046858d https://git.kernel.org/stable/c/f19361d570c67e7e014896fa2dacd7d721bf0aa8 https://git.kernel.org/stable/c/d637b5118274701e8448f35953877daf04df18b4 https://git.kernel.org/stable/c/e4168ac25b4bd378bd7dda322d589482a136c1fd https://git.kernel.org/stable/c/de8b6e1c231a95abf95ad097b993d34b31458ec9 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html •