CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52852 – f2fs: compress: fix to avoid use-after-free on dic
https://notcve.org/view.php?id=CVE-2023-52852
In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: fix to avoid use-after-free on dic Call trace: __memcpy+0x128/0x250 f2fs_read_multi_pages+0x940/0xf7c f2fs_mpage_readpages+0x5a8/0x624 f2fs_readahead+0x5c/0x110 page_cache_ra_unbounded+0x1b8/0x590 do_sync_mmap_readahead+0x1dc/0x2e4 filemap_fault+0x254/0xa8c f2fs_filemap_fault+0x2c/0x104 __do_fault+0x7c/0x238 do_handle_mm_fault+0x11bc/0x2d14 do_mem_abort+0x3a8/0x1004 el0_da+0x3c/0xa0 el0t_64_sync_handler+0xc4/0xec el0t_64_sync+0x1b4/0x1b8 In f2fs_read_multi_pages(), once f2fs_decompress_cluster() was called if we hit cached page in compress_inode's cache, dic may be released, it needs break the loop rather than continuing it, in order to avoid accessing invalid dic pointer. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: compress: corrección para evitar el use after free en dic. Rastreo de llamadas: __memcpy+0x128/0x250 f2fs_read_multi_pages+0x940/0xf7c f2fs_mpage_readpages+0x5a8/0x624 f2fs_readahead+0x5c/0x110 page_cache_ra_ ilimitado +0x1b8/0x590 do_sync_mmap_readahead+0x1dc/0x2e4 filemap_fault+0x254/0xa8c f2fs_filemap_fault+0x2c/0x104 __do_fault+0x7c/0x238 do_handle_mm_fault+0x11bc/0x2d14 do_mem_abort+0x3a8 /0x1004 el0_da+0x3c/0xa0 el0t_64_sync_handler+0xc4/0xec el0t_64_sync+0x1b4/0x1b8 En f2fs_read_multi_pages(), una vez que se llamó a f2fs_decompress_cluster() si llegamos a la página almacenada en caché en el caché de compress_inode, es posible que se libere dic, es necesario romper el ciclo en lugar de continuarlo, para evitar acceder a un puntero dic no válido. • https://git.kernel.org/stable/c/6ce19aff0b8cd386860855185c6cd79337fc4d2b https://git.kernel.org/stable/c/a23706426da9b611be5beae0f3faa260fb453b4e https://git.kernel.org/stable/c/8c4504cc0c64862740a6acb301e0cfa59580dbc5 https://git.kernel.org/stable/c/9375ea7f269093d7c884857ae1f47633a91f429c https://git.kernel.org/stable/c/932ddb5c29e884cc6fac20417ece72ba4a35c401 https://git.kernel.org/stable/c/9d065aa52b6ee1b06f9c4eca881c9b4425a12ba2 https://git.kernel.org/stable/c/b0327c84e91a0f4f0abced8cb83ec86a7083f086 •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52849 – cxl/mem: Fix shutdown order
https://notcve.org/view.php?id=CVE-2023-52849
In the Linux kernel, the following vulnerability has been resolved: cxl/mem: Fix shutdown order Ira reports that removing cxl_mock_mem causes a crash with the following trace: BUG: kernel NULL pointer dereference, address: 0000000000000044 [..] RIP: 0010:cxl_region_decode_reset+0x7f/0x180 [cxl_core] [..] Call Trace: <TASK> cxl_region_detach+0xe8/0x210 [cxl_core] cxl_decoder_kill_region+0x27/0x40 [cxl_core] cxld_unregister+0x29/0x40 [cxl_core] devres_release_all+0xb8/0x110 device_unbind_cleanup+0xe/0x70 device_release_driver_internal+0x1d2/0x210 bus_remove_device+0xd7/0x150 device_del+0x155/0x3e0 device_unregister+0x13/0x60 devm_release_action+0x4d/0x90 ? __pfx_unregister_port+0x10/0x10 [cxl_core] delete_endpoint+0x121/0x130 [cxl_core] devres_release_all+0xb8/0x110 device_unbind_cleanup+0xe/0x70 device_release_driver_internal+0x1d2/0x210 bus_remove_device+0xd7/0x150 device_del+0x155/0x3e0 ? lock_release+0x142/0x290 cdev_device_del+0x15/0x50 cxl_memdev_unregister+0x54/0x70 [cxl_core] This crash is due to the clearing out the cxl_memdev's driver context (@cxlds) before the subsystem is done with it. This is ultimately due to the region(s), that this memdev is a member, being torn down and expecting to be able to de-reference @cxlds, like here: static int cxl_region_decode_reset(struct cxl_region *cxlr, int count) ... if (cxlds->rcd) goto endpoint_reset; ... Fix it by keeping the driver context valid until memdev-device unregistration, and subsequently the entire stack of related dependencies, unwinds. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: cxl/mem: arreglo del orden de apagado. • https://git.kernel.org/stable/c/9cc238c7a526dba9ee8c210fa2828886fc65db66 https://git.kernel.org/stable/c/964a9834492210f48b360baa9e20a9eedf4d08ff https://git.kernel.org/stable/c/20bd0198bebdd706bd4614b3933ef70d7c19618f https://git.kernel.org/stable/c/7c7371b41a14e86f53e7dbe5baa7b1d3e0ab324b https://git.kernel.org/stable/c/cad22a757029c3a1985c221a2d4a6491ad4035ae https://git.kernel.org/stable/c/0ca074f7d788627a4e0b047ca5fbdb5fc567220c https://git.kernel.org/stable/c/88d3917f82ed4215a2154432c26de1480a61b209 •
CVSS: 5.2EPSS: 0%CPEs: 8EXPL: 0CVE-2023-52847 – media: bttv: fix use after free error due to btv->timeout timer
https://notcve.org/view.php?id=CVE-2023-52847
In the Linux kernel, the following vulnerability has been resolved: media: bttv: fix use after free error due to btv->timeout timer There may be some a race condition between timer function bttv_irq_timeout and bttv_remove. The timer is setup in probe and there is no timer_delete operation in remove function. When it hit kfree btv, the function might still be invoked, which will cause use after free bug. This bug is found by static analysis, it may be false positive. Fix it by adding del_timer_sync invoking to the remove function. cpu0 cpu1 bttv_probe ->timer_setup ->bttv_set_dma ->mod_timer; bttv_remove ->kfree(btv); ->bttv_irq_timeout ->USE btv En el kernel de Linux, se resolvió la siguiente vulnerabilidad: medio: bttv: corrección de uso después de error gratuito debido a btv->timeout timer. Puede haber alguna condición de ejecución entre la función del temporizador bttv_irq_timeout y bttv_remove. El temporizador está configurado en la sonda y no hay ninguna operación timer_delete en la función de eliminación. • https://git.kernel.org/stable/c/162e6376ac58440beb6a2d2ee294f5d88ea58dd1 https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9 https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9a https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2b https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574 https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226 https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267 https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586da • CWE-416: Use After Free •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52846 – hsr: Prevent use after free in prp_create_tagged_frame()
https://notcve.org/view.php?id=CVE-2023-52846
In the Linux kernel, the following vulnerability has been resolved: hsr: Prevent use after free in prp_create_tagged_frame() The prp_fill_rct() function can fail. In that situation, it frees the skb and returns NULL. Meanwhile on the success path, it returns the original skb. So it's straight forward to fix bug by using the returned value. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: hsr: impedir el uso después de liberar en prp_create_tagged_frame(). • https://git.kernel.org/stable/c/451d8123f89791bb628277c0bdb4cae34a3563e6 https://git.kernel.org/stable/c/ddf4e04e946aaa6c458b8b6829617cc44af2bffd https://git.kernel.org/stable/c/a1a485e45d24b1cd8fe834fd6f1b06e2903827da https://git.kernel.org/stable/c/6086258bd5ea7b5c706ff62da42b8e271b2401db https://git.kernel.org/stable/c/1787b9f0729d318d67cf7c5a95f0c3dba9a7cc18 https://git.kernel.org/stable/c/d103fb6726904e353b4773188ee3d3acb4078363 https://git.kernel.org/stable/c/876f8ab52363f649bcc74072157dfd7adfbabc0d •
CVSS: 4.4EPSS: 0%CPEs: 9EXPL: 0CVE-2023-52845 – tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING
https://notcve.org/view.php?id=CVE-2023-52845
In the Linux kernel, the following vulnerability has been resolved: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING syzbot reported the following uninit-value access issue [1]: ===================================================== BUG: KMSAN: uninit-value in strlen lib/string.c:418 [inline] BUG: KMSAN: uninit-value in strstr+0xb8/0x2f0 lib/string.c:756 strlen lib/string.c:418 [inline] strstr+0xb8/0x2f0 lib/string.c:756 tipc_nl_node_reset_link_stats+0x3ea/0xb50 net/tipc/node.c:2595 genl_family_rcv_msg_doit net/netlink/genetlink.c:971 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline] genl_rcv_msg+0x11ec/0x1290 net/netlink/genetlink.c:1066 netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2545 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1075 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0xf47/0x1250 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595 __sys_sendmsg net/socket.c:2624 [inline] __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:559 __alloc_skb+0x318/0x740 net/core/skbuff.c:650 alloc_skb include/linux/skbuff.h:1286 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline] netlink_sendmsg+0xb34/0x13d0 net/netlink/af_netlink.c:1885 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595 __sys_sendmsg net/socket.c:2624 [inline] __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd TIPC bearer-related names including link names must be null-terminated strings. If a link name which is not null-terminated is passed through netlink, strstr() and similar functions can cause buffer overrun. This causes the above issue. This patch changes the nla_policy for bearer-related names from NLA_STRING to NLA_NUL_STRING. This resolves the issue by ensuring that only null-terminated strings are accepted as bearer-related names. syzbot reported similar uninit-value issue related to bearer names [2]. The root cause of this issue is that a non-null-terminated bearer name was passed. • https://git.kernel.org/stable/c/7be57fc6918470ecacd16b89c0d4f73d8fc265c4 https://git.kernel.org/stable/c/6744008c354bca2e4686a5b6056ee6b535d9f67d https://git.kernel.org/stable/c/2426425d686b43adbc4f2f4a367b494f06f159d6 https://git.kernel.org/stable/c/2199260c42e6fbc5af8adae3bf78e623407c91b0 https://git.kernel.org/stable/c/b33d130f07f1decd756b849ab03c23d11d4dd294 https://git.kernel.org/stable/c/3907b89cd17fcc23e9a80789c36856f00ece0ba8 https://git.kernel.org/stable/c/4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4 https://git.kernel.org/stable/c/abc1582119e8c4af14cedb0db6541fd60 • CWE-476: NULL Pointer Dereference •