CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2022-48975 – gpiolib: fix memory leak in gpiochip_setup_dev()
https://notcve.org/view.php?id=CVE-2022-48975
In the Linux kernel, the following vulnerability has been resolved: gpiolib: fix memory leak in gpiochip_setup_dev() Here is a backtrace report about memory leak detected in gpiochip_setup_dev(): unreferenced object 0xffff88810b406400 (size 512): comm "python3", pid 1682, jiffies 4295346908 (age 24.090s) backtrace: kmalloc_trace device_add device_private_init at drivers/base/core.c:3361 (inlined by) device_add at drivers/base/core.c:3411 cdev_device_add gpiolib_cdev_register gpiochip_setup_dev gpiochip_add_data_with_key gcdev_register() & gcdev_unregister() would call device_add() & device_del() (no matter CONFIG_GPIO_CDEV is enabled or not) to register/unregister device. However, if device_add() succeeds, some resource (like struct device_private allocated by device_private_init()) is not released by device_del(). Therefore, after device_add() succeeds by gcdev_register(), it needs to call put_device() to release resource in the error handle path. Here we move forward the register of release function, and let it release every piece of resource by put_device() instead of kfree(). While at it, fix another subtle issue, i.e. when gc->ngpio is equal to 0, we still call kcalloc() and, in case of further error, kfree() on the ZERO_PTR pointer, which is not NULL. It's not a bug per se, but rather waste of the resources and potentially wrong expectation about contents of the gdev->descs variable. • https://git.kernel.org/stable/c/159f3cd92f17c61a4e2a47456de5865b114ef88e https://git.kernel.org/stable/c/6daaa84b621485fe28c401be18debf92ae8ef04a https://git.kernel.org/stable/c/371363716398ed718e389bea8c5e9843a79dde4e https://git.kernel.org/stable/c/ec851b23084b3a0af8bf0f5e51d33a8d678bdc49 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2022-48973 – gpio: amd8111: Fix PCI device reference count leak
https://notcve.org/view.php?id=CVE-2022-48973
In the Linux kernel, the following vulnerability has been resolved: gpio: amd8111: Fix PCI device reference count leak for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() after the 'out' label. Since pci_dev_put() can handle NULL input parameter, there is no problem for the 'Device not found' branch. For the normal path, add pci_dev_put() in amd_gpio_exit(). • https://git.kernel.org/stable/c/f942a7de047d8c599cc1a9a26293c8c7400450ea https://git.kernel.org/stable/c/4749c5cc147c9860b96db1e71cc36d1de1bd3f59 https://git.kernel.org/stable/c/71d591ef873f9ebb86cd8d053b3caee785b2de6a https://git.kernel.org/stable/c/b2bc053ebbba57a06fa655db5ea796de2edce445 https://git.kernel.org/stable/c/48bd5d3801f6b67cc144449d434abbd5043a6d37 https://git.kernel.org/stable/c/5ee6413d3dd972930af787b2c0c7aaeb379fa521 https://git.kernel.org/stable/c/4271515f189bd5fe2ec86b4089dab7cb804625d2 https://git.kernel.org/stable/c/e364ce04d8f840478b09eee57b614de7c •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2022-48972 – mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add()
https://notcve.org/view.php?id=CVE-2022-48972
In the Linux kernel, the following vulnerability has been resolved: mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() Kernel fault injection test reports null-ptr-deref as follows: BUG: kernel NULL pointer dereference, address: 0000000000000008 RIP: 0010:cfg802154_netdev_notifier_call+0x120/0x310 include/linux/list.h:114 Call Trace: <TASK> raw_notifier_call_chain+0x6d/0xa0 kernel/notifier.c:87 call_netdevice_notifiers_info+0x6e/0xc0 net/core/dev.c:1944 unregister_netdevice_many_notify+0x60d/0xcb0 net/core/dev.c:1982 unregister_netdevice_queue+0x154/0x1a0 net/core/dev.c:10879 register_netdevice+0x9a8/0xb90 net/core/dev.c:10083 ieee802154_if_add+0x6ed/0x7e0 net/mac802154/iface.c:659 ieee802154_register_hw+0x29c/0x330 net/mac802154/main.c:229 mcr20a_probe+0xaaa/0xcb1 drivers/net/ieee802154/mcr20a.c:1316 ieee802154_if_add() allocates wpan_dev as netdev's private data, but not init the list in struct wpan_dev. cfg802154_netdev_notifier_call() manage the list when device register/unregister, and may lead to null-ptr-deref. Use INIT_LIST_HEAD() on it to initialize it correctly. • https://git.kernel.org/stable/c/fcf39e6e88e9492f6688ec8ba4e1be622b904232 https://git.kernel.org/stable/c/7410f4d1221bb182510b7778ab6eefa8b9b7102d https://git.kernel.org/stable/c/9980a3ea20de40c83817877106c909cb032692d2 https://git.kernel.org/stable/c/f00c84fb1635c27ba24ec5df65d5bd7d7dc00008 https://git.kernel.org/stable/c/1831d4540406708e48239cf38fd9c3b7ea98e08f https://git.kernel.org/stable/c/42c319635c0cf7eb36eccac6cda76532f47b61a3 https://git.kernel.org/stable/c/a110287ef4a423980309490df632e1c1e73b3dc9 https://git.kernel.org/stable/c/623918f40fa68e3bb21312a3fafb90f49 •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2022-48971 – Bluetooth: Fix not cleanup led when bt_init fails
https://notcve.org/view.php?id=CVE-2022-48971
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix not cleanup led when bt_init fails bt_init() calls bt_leds_init() to register led, but if it fails later, bt_leds_cleanup() is not called to unregister it. This can cause panic if the argument "bluetooth-power" in text is freed and then another led_trigger_register() tries to access it: BUG: unable to handle page fault for address: ffffffffc06d3bc0 RIP: 0010:strcmp+0xc/0x30 Call Trace: <TASK> led_trigger_register+0x10d/0x4f0 led_trigger_register_simple+0x7d/0x100 bt_init+0x39/0xf7 [bluetooth] do_one_initcall+0xd0/0x4e0 • https://git.kernel.org/stable/c/e64c97b53bc6727aa4385535166aaa047281e02d https://git.kernel.org/stable/c/8a66c3a94285552f6a8e45d73b34ebbad11d388b https://git.kernel.org/stable/c/2c6cf0afc3856359e620e96edd952457d258e16c https://git.kernel.org/stable/c/e7b950458156d410509a08c41930b75e72985938 https://git.kernel.org/stable/c/edf7284a98296369dd0891a0457eec37df244873 https://git.kernel.org/stable/c/5ecf7cd6fde5e72c87122084cf00d63e35d8dd9f https://git.kernel.org/stable/c/2f3957c7eb4e07df944169a3e50a4d6790e1c744 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2022-48970 – af_unix: Get user_ns from in_skb in unix_diag_get_exact().
https://notcve.org/view.php?id=CVE-2022-48970
In the Linux kernel, the following vulnerability has been resolved: af_unix: Get user_ns from in_skb in unix_diag_get_exact(). Wei Chen reported a NULL deref in sk_user_ns() [0][1], and Paolo diagnosed the root cause: in unix_diag_get_exact(), the newly allocated skb does not have sk. [2] We must get the user_ns from the NETLINK_CB(in_skb).sk and pass it to sk_diag_fill(). [0]: BUG: kernel NULL pointer dereference, address: 0000000000000270 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 12bbce067 P4D 12bbce067 PUD 12bc40067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 27942 Comm: syz-executor.0 Not tainted 6.1.0-rc5-next-20221118 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014 RIP: 0010:sk_user_ns include/net/sock.h:920 [inline] RIP: 0010:sk_diag_dump_uid net/unix/diag.c:119 [inline] RIP: 0010:sk_diag_fill+0x77d/0x890 net/unix/diag.c:170 Code: 89 ef e8 66 d4 2d fd c7 44 24 40 00 00 00 00 49 8d 7c 24 18 e8 54 d7 2d fd 49 8b 5c 24 18 48 8d bb 70 02 00 00 e8 43 d7 2d fd <48> 8b 9b 70 02 00 00 48 8d 7b 10 e8 33 d7 2d fd 48 8b 5b 10 48 8d RSP: 0018:ffffc90000d67968 EFLAGS: 00010246 RAX: ffff88812badaa48 RBX: 0000000000000000 RCX: ffffffff840d481d RDX: 0000000000000465 RSI: 0000000000000000 RDI: 0000000000000270 RBP: ffffc90000d679a8 R08: 0000000000000277 R09: 0000000000000000 R10: 0001ffffffffffff R11: 0001c90000d679a8 R12: ffff88812ac03800 R13: ffff88812c87c400 R14: ffff88812ae42210 R15: ffff888103026940 FS: 00007f08b4e6f700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000270 CR3: 000000012c58b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> unix_diag_get_exact net/unix/diag.c:285 [inline] unix_diag_handler_dump+0x3f9/0x500 net/unix/diag.c:317 __sock_diag_cmd net/core/sock_diag.c:235 [inline] sock_diag_rcv_msg+0x237/0x250 net/core/sock_diag.c:266 netlink_rcv_skb+0x13e/0x250 net/netlink/af_netlink.c:2564 sock_diag_rcv+0x24/0x40 net/core/sock_diag.c:277 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2476 ___sys_sendmsg net/socket.c:2530 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2559 __do_sys_sendmsg net/socket.c:2568 [inline] __se_sys_sendmsg net/socket.c:2566 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2566 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4697f9 Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f08b4e6ec48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000077bf80 RCX: 00000000004697f9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00000000004d29e9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000077bf80 R13: 0000000000000000 R14: 000000000077bf80 R15: 00007ffdb36bc6c0 </TASK> Modules linked in: CR2: 0000000000000270 [1]: https://lore.kernel.org/netdev/CAO4mrfdvyjFpokhNsiwZiP-wpdSD0AStcJwfKcKQdAALQ9_2Qw@mail.gmail.com/ [2]: https://lore.kernel.org/netdev/e04315e7c90d9a75613f3993c2baf2d344eef7eb.camel@redhat.com/ • https://git.kernel.org/stable/c/cae9910e73446cac68a54e3a7b02aaa12b689026 https://git.kernel.org/stable/c/c66d78aee55dab72c92020ebfbebc464d4f5dd2a https://git.kernel.org/stable/c/575a6266f63dbb3b8eb1da03671451f0d81b8034 https://git.kernel.org/stable/c/5c014eb0ed6c8c57f483e94cc6e90f34ce426d91 https://git.kernel.org/stable/c/9c1d6f79a2c7b8221dcec27defc6dc461052ead4 https://git.kernel.org/stable/c/b3abe42e94900bdd045c472f9c9be620ba5ce553 •