CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 0CVE-2023-52772 – af_unix: fix use-after-free in unix_stream_read_actor()
https://notcve.org/view.php?id=CVE-2023-52772
In the Linux kernel, the following vulnerability has been resolved: af_unix: fix use-after-free in unix_stream_read_actor() syzbot reported the following crash [1] After releasing unix socket lock, u->oob_skb can be changed by another thread. We must temporarily increase skb refcount to make sure this other thread will not free the skb under us. [1] BUG: KASAN: slab-use-after-free in unix_stream_read_actor+0xa7/0xc0 net/unix/af_unix.c:2866 Read of size 4 at addr ffff88801f3b9cc4 by task syz-executor107/5297 CPU: 1 PID: 5297 Comm: syz-executor107 Not tainted 6.6.0-syzkaller-15910-gb8e3a87a627b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 unix_stream_read_actor+0xa7/0xc0 net/unix/af_unix.c:2866 unix_stream_recv_urg net/unix/af_unix.c:2587 [inline] unix_stream_read_generic+0x19a5/0x2480 net/unix/af_unix.c:2666 unix_stream_recvmsg+0x189/0x1b0 net/unix/af_unix.c:2903 sock_recvmsg_nosec net/socket.c:1044 [inline] sock_recvmsg+0xe2/0x170 net/socket.c:1066 ____sys_recvmsg+0x21f/0x5c0 net/socket.c:2803 ___sys_recvmsg+0x115/0x1a0 net/socket.c:2845 __sys_recvmsg+0x114/0x1e0 net/socket.c:2875 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fc67492c559 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc6748ab228 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007fc67492c559 RDX: 0000000040010083 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00007fc6749b6348 R08: 00007fc6748ab6c0 R09: 00007fc6748ab6c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc6749b6340 R13: 00007fc6749b634c R14: 00007ffe9fac52a0 R15: 00007ffe9fac5388 </TASK> Allocated by task 5295: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x180/0x3c0 mm/slub.c:3523 __alloc_skb+0x287/0x330 net/core/skbuff.c:641 alloc_skb include/linux/skbuff.h:1286 [inline] alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6331 sock_alloc_send_pskb+0x7e4/0x970 net/core/sock.c:2780 sock_alloc_send_skb include/net/sock.h:1884 [inline] queue_oob net/unix/af_unix.c:2147 [inline] unix_stream_sendmsg+0xb5f/0x10a0 net/unix/af_unix.c:2301 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 5295: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] kmem_cache_free+0xf8/0x340 mm/slub.c:3831 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:1015 __kfree_skb net/core/skbuff.c:1073 [inline] consume_skb net/core/skbuff.c:1288 [inline] consume_skb+0xdf/0x170 net/core/skbuff.c:1282 queue_oob net/unix/af_unix.c:2178 [inline] u ---truncated--- En el kernel de Linux, se resolvió la siguiente vulnerabilidad: af_unix: corrige use-after-free en unix_stream_read_actor() syzbot informó el siguiente bloqueo [1] Después de liberar el bloqueo del socket Unix, otro subproceso puede cambiar u->oob_skb. Debemos aumentar temporalmente el recuento de skb para asegurarnos de que este otro hilo no libere el skb que está debajo de nosotros. [1] ERROR: KASAN: slab-use-after-free en unix_stream_read_actor+0xa7/0xc0 net/unix/af_unix.c:2866 Lectura de tamaño 4 en la dirección ffff88801f3b9cc4 por tarea syz-executor107/5297 CPU: 1 PID: 5297 Comm : syz-executor107 No contaminado 6.6.0-syzkaller-15910-gb8e3a87a627b #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/10/2023 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en línea] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [en línea] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan /report.c:588 unix_stream_read_actor+0xa7/0xc0 net/unix/af_unix.c:2866 unix_stream_recv_urg net/unix/af_unix.c:2587 [en línea] unix_stream_read_generic+0x19a5/0x2480 net/unix/af_unix.c:2666 +0x189 /0x1b0 net/unix/af_unix.c:2903 sock_recvmsg_nosec net/socket.c:1044 [en línea] sock_recvmsg+0xe2/0x170 net/socket.c:1066 ____sys_recvmsg+0x21f/0x5c0 net/socket.c:2803 ___sys_recv mensaje+0x115/ 0x1a0 net/socket.c:2845 __sys_recvmsg+0x114/0x1e0 net/socket.c:2875 do_syscall_x64 arch/x86/entry/common.c:51 [en línea] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c: 82 Entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fc67492c559 Código: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48 89 f7 48 89 d 6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc6748ab228 EFLAGS: 00000246 ORIG_RAX: 0000002f RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007fc67492c559 RDX : 0000000040010083 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00007fc6749b6348 R08: 00007fc6748ab6c0 R09: 00007fc6748ab6c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc6749b6340 R13: 00007fc6749b634c R14: 00007ffe9fac52a0 R15: 00007ffe9fac5388 tarea 5295: kasan_save_stack+0x33/0x50 mm /kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [en línea] slab_post_alloc_hook mm/slab.h:763 [en línea] slab_alloc_node mm/slub.c:3478 [en línea] kmem_cache_alloc_node+0x180/0x3c0 mm/slub.c:3523 __alloc_skb+0x287/0x330 net/core/skbuff.c:641 alloc_skb include/ linux/skbuff.h:1286 [en línea] alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6331 sock_alloc_send_pskb+0x7e4/0x970 net/core/sock.c:2780 sock_alloc_send_skb include/net/sock.h:1884 [en línea ] queue_oob net/unix/af_unix.c:2147 [en línea] unix_stream_sendmsg+0xb5f/0x10a0 net/unix/af_unix.c:2301 sock_sendmsg_nosec net/socket.c:730 [en línea] __sock_sendmsg+0xd5/0x180 net/socket.c: 745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/ common.c:51 [ Inline] do_syscall_64+0x3f/0x110 Arch/x86/entry/Common.c: 82 entry_syscall_64_after_hwframe+0x63/0x6b liberado por tarea 5295: kasan_save_stack+0x33/0x50 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [en línea] ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/ linux/kasan.h:164 [en línea] slab_free_hook mm/slub.c:1800 [en línea] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [en línea] kmem_cache_free+0xf8/0x340 mm /slub.c:3831 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:1015 __kfree_skb net/core/skbuff.c:1073 [en línea] consume_skb net/core/skbuff.c:1288 [en línea] consume_skb+0xdf/ 0x170 net/core/skbuff.c:1282 queue_oob net/unix/af_unix.c:2178 [en línea] u ---truncado--- • https://git.kernel.org/stable/c/876c14ad014d0e39c57cbfde53e13d17cdb6d645 https://git.kernel.org/stable/c/75bcfc188abf4fae9c1d5f5dc0a03540be602eef https://git.kernel.org/stable/c/d179189eec426fe4801e4b91efa1889faed12700 https://git.kernel.org/stable/c/eae0b295ce16d8c8b4114c3037993191b4bb92f0 https://git.kernel.org/stable/c/069a3ec329ff43e7869a3d94c62cd03203016bce https://git.kernel.org/stable/c/4b7b492615cf3017190f55444f7016812b66611d • CWE-416: Use After Free •
CVSS: 4.4EPSS: 0%CPEs: 3EXPL: 0CVE-2023-52771 – cxl/port: Fix delete_endpoint() vs parent unregistration race
https://notcve.org/view.php?id=CVE-2023-52771
In the Linux kernel, the following vulnerability has been resolved: cxl/port: Fix delete_endpoint() vs parent unregistration race The CXL subsystem, at cxl_mem ->probe() time, establishes a lineage of ports (struct cxl_port objects) between an endpoint and the root of a CXL topology. Each port including the endpoint port is attached to the cxl_port driver. Given that setup, it follows that when either any port in that lineage goes through a cxl_port ->remove() event, or the memdev goes through a cxl_mem ->remove() event. The hierarchy below the removed port, or the entire hierarchy if the memdev is removed needs to come down. The delete_endpoint() callback is careful to check whether it is being called to tear down the hierarchy, or if it is only being called to teardown the memdev because an ancestor port is going through ->remove(). That care needs to take the device_lock() of the endpoint's parent. Which requires 2 bugs to be fixed: 1/ A reference on the parent is needed to prevent use-after-free scenarios like this signature: BUG: spinlock bad magic on CPU#0, kworker/u56:0/11 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc38 05/24/2023 Workqueue: cxl_port detach_memdev [cxl_core] RIP: 0010:spin_bug+0x65/0xa0 Call Trace: do_raw_spin_lock+0x69/0xa0 __mutex_lock+0x695/0xb80 delete_endpoint+0xad/0x150 [cxl_core] devres_release_all+0xb8/0x110 device_unbind_cleanup+0xe/0x70 device_release_driver_internal+0x1d2/0x210 detach_memdev+0x15/0x20 [cxl_core] process_one_work+0x1e3/0x4c0 worker_thread+0x1dd/0x3d0 2/ In the case of RCH topologies, the parent device that needs to be locked is not always @port->dev as returned by cxl_mem_find_port(), use endpoint->dev.parent instead. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cxl/port: corrige delete_endpoint() frente a la ejecución de cancelación del registro principal. El subsistema CXL, en el momento cxl_mem ->probe(), establece un linaje de puertos (objetos struct cxl_port) entre un punto final y la raíz de una topología CXL. • https://git.kernel.org/stable/c/8dd2bc0f8e02d39bd80851ca787bcbdb7d495e69 https://git.kernel.org/stable/c/37179fcc916bce8c3cc7b36d67ef814cce55142b https://git.kernel.org/stable/c/6b2e428e673b3f55965674a426c40922e91388aa https://git.kernel.org/stable/c/8d2ad999ca3c64cb08cf6a58d227b9d9e746d708 https://access.redhat.com/security/cve/CVE-2023-52771 https://bugzilla.redhat.com/show_bug.cgi?id=2282720 • CWE-413: Improper Resource Locking •
CVSS: 5.6EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52768 – wifi: wilc1000: use vmm_table as array in wilc struct
https://notcve.org/view.php?id=CVE-2023-52768
In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: use vmm_table as array in wilc struct Enabling KASAN and running some iperf tests raises some memory issues with vmm_table: BUG: KASAN: slab-out-of-bounds in wilc_wlan_handle_txq+0x6ac/0xdb4 Write of size 4 at addr c3a61540 by task wlan0-tx/95 KASAN detects that we are writing data beyond range allocated to vmm_table. There is indeed a mismatch between the size passed to allocator in wilc_wlan_init, and the range of possible indexes used later: allocation size is missing a multiplication by sizeof(u32) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: wifi: wilc1000: use vmm_table como matriz en wilc struct. Al habilitar KASAN y ejecutar algunas pruebas de iperf se generan algunos problemas de memoria con vmm_table: BUG: KASAN: slab-out-of-bounds en wilc_wlan_handle_txq +0x6ac/0xdb4 Escritura de tamaño 4 en la dirección c3a61540 mediante la tarea wlan0-tx/95 KASAN detecta que estamos escribiendo datos más allá del rango asignado a vmm_table. De hecho, existe una discrepancia entre el tamaño pasado al asignador en wilc_wlan_init y el rango de posibles índices utilizados más adelante: al tamaño de la asignación le falta una multiplicación por sizeof(u32) • https://git.kernel.org/stable/c/32dd0b22a5ba1dd296ccf2caf46ad44c3a8d5d98 https://git.kernel.org/stable/c/40b717bfcefab28a0656b8caa5e43d5449e5a671 https://git.kernel.org/stable/c/5212d958f6518003cd98c9886f8e8aedcfc25741 https://git.kernel.org/stable/c/541b3757fd443a68ed8d25968eae511a8275e7c8 https://git.kernel.org/stable/c/4b0d6ddb6466d10df878a7787f175a0e4adc3e27 https://git.kernel.org/stable/c/6aaf7cd8bdfe245d3c9a8b48fe70c2011965948e https://git.kernel.org/stable/c/3ce1c2c3999b232258f7aabab311d47dda75605c https://git.kernel.org/stable/c/05ac1a198a63ad66bf5ae8b7321407c10 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2023-52766 – i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler
https://notcve.org/view.php?id=CVE-2023-52766
In the Linux kernel, the following vulnerability has been resolved: i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler Do not loop over ring headers in hci_dma_irq_handler() that are not allocated and enabled in hci_dma_init(). Otherwise out of bounds access will occur from rings->headers[i] access when i >= number of allocated ring headers. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: i3c: mipi-i3c-hci: corrige el acceso fuera de los límites en hci_dma_irq_handler. No realice bucles sobre encabezados de anillo en hci_dma_irq_handler() que no estén asignados y habilitados en hci_dma_init(). De lo contrario, el acceso fuera de los límites se producirá desde el acceso de anillos->encabezados[i] cuando i >= número de encabezados de anillo asignados. • https://git.kernel.org/stable/c/d23ad76f240c0f597b7a9eb79905d246f27d40df https://git.kernel.org/stable/c/8be39f66915b40d26ea2c18ba84b5c3d5da6809b https://git.kernel.org/stable/c/7c2b91b30d74d7c407118ad72502d4ca28af1af6 https://git.kernel.org/stable/c/4c86cb2321bd9c72d3b945ce7f747961beda8e65 https://git.kernel.org/stable/c/45a832f989e520095429589d5b01b0c65da9b574 •
CVSS: 6.2EPSS: 0%CPEs: 4EXPL: 0CVE-2023-52765 – mfd: qcom-spmi-pmic: Fix revid implementation
https://notcve.org/view.php?id=CVE-2023-52765
In the Linux kernel, the following vulnerability has been resolved: mfd: qcom-spmi-pmic: Fix revid implementation The Qualcomm SPMI PMIC revid implementation is broken in multiple ways. First, it assumes that just because the sibling base device has been registered that means that it is also bound to a driver, which may not be the case (e.g. due to probe deferral or asynchronous probe). This could trigger a NULL-pointer dereference when attempting to access the driver data of the unbound device. Second, it accesses driver data of a sibling device directly and without any locking, which means that the driver data may be freed while it is being accessed (e.g. on driver unbind). Third, it leaks a struct device reference to the sibling device which is looked up using the spmi_device_from_of() every time a function (child) device is calling the revid function (e.g. on probe). Fix this mess by reimplementing the revid lookup so that it is done only at probe of the PMIC device; the base device fetches the revid info from the hardware, while any secondary SPMI device fetches the information from the base device and caches it so that it can be accessed safely from its children. If the base device has not been probed yet then probe of a secondary device is deferred. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: mfd: qcom-spmi-pmic: reparación de la implementación revid. La implementación revid de Qualcomm SPMI PMIC está rota de varias maneras. • https://git.kernel.org/stable/c/e9c11c6e3a0e93903f5a13f8d2f97ae1bba512e1 https://git.kernel.org/stable/c/db98de0809f12b0edb9cd1be78e1ec1bfeba8f40 https://git.kernel.org/stable/c/4ce77b023d42a9f1062eecf438df1af4b4072eb2 https://git.kernel.org/stable/c/affae18838db5e6b463ee30c821385695af56dc2 https://git.kernel.org/stable/c/7b439aaa62fee474a0d84d67a25f4984467e7b95 • CWE-476: NULL Pointer Dereference •