CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2022-48919 – cifs: fix double free race when mount fails in cifs_get_root()
https://notcve.org/view.php?id=CVE-2022-48919
In the Linux kernel, the following vulnerability has been resolved: cifs: fix double free race when mount fails in cifs_get_root() When cifs_get_root() fails during cifs_smb3_do_mount() we call deactivate_locked_super() which eventually will call delayed_free() which will free the context. In this situation we should not proceed to enter the out: section in cifs_smb3_do_mount() and free the same resources a second time. [Thu Feb 10 12:59:06 2022] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x32/0x60 [Thu Feb 10 12:59:06 2022] Read of size 8 at addr ffff888364f4d110 by task swapper/1/0 [Thu Feb 10 12:59:06 2022] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G OE 5.17.0-rc3+ #4 [Thu Feb 10 12:59:06 2022] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.0 12/17/2019 [Thu Feb 10 12:59:06 2022] Call Trace: [Thu Feb 10 12:59:06 2022] <IRQ> [Thu Feb 10 12:59:06 2022] dump_stack_lvl+0x5d/0x78 [Thu Feb 10 12:59:06 2022] print_address_description.constprop.0+0x24/0x150 [Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60 [Thu Feb 10 12:59:06 2022] kasan_report.cold+0x7d/0x117 [Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60 [Thu Feb 10 12:59:06 2022] __asan_load8+0x86/0xa0 [Thu Feb 10 12:59:06 2022] rcu_cblist_dequeue+0x32/0x60 [Thu Feb 10 12:59:06 2022] rcu_core+0x547/0xca0 [Thu Feb 10 12:59:06 2022] ? call_rcu+0x3c0/0x3c0 [Thu Feb 10 12:59:06 2022] ? __this_cpu_preempt_check+0x13/0x20 [Thu Feb 10 12:59:06 2022] ? • https://git.kernel.org/stable/c/da834d6c1147c7519a9e55b510a03b7055104749 https://git.kernel.org/stable/c/147a0e71ccf96df9fc8c2ac500829d8e423ef02c https://git.kernel.org/stable/c/2fe0e281f7ad0a62259649764228227dd6b2561d https://git.kernel.org/stable/c/e208668ef7ba23efcbf76a8200cab8deee501c4d https://git.kernel.org/stable/c/df9db1a2af37f39ad1653c7b9b0d275d72d0bc67 https://git.kernel.org/stable/c/546d60859ecf13380fcabcbeace53a5971493a2b https://git.kernel.org/stable/c/563431c1f3c8f2230e4a9c445fa23758742bc4f0 https://git.kernel.org/stable/c/3d6cc9898efdfb062efb74dc18cfc700e •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2022-48917 – ASoC: ops: Shift tested values in snd_soc_put_volsw() by +min
https://notcve.org/view.php?id=CVE-2022-48917
In the Linux kernel, the following vulnerability has been resolved: ASoC: ops: Shift tested values in snd_soc_put_volsw() by +min While the $val/$val2 values passed in from userspace are always >= 0 integers, the limits of the control can be signed integers and the $min can be non-zero and less than zero. To correctly validate $val/$val2 against platform_max, add the $min offset to val first. • https://git.kernel.org/stable/c/40f598698129b5ceaf31012f9501b775c7b6e57d https://git.kernel.org/stable/c/586ef863c94354a7e00e5ae5ef01443d1dc99bc7 https://git.kernel.org/stable/c/65a61b1f56f5386486757930069fbdce94af08bf https://git.kernel.org/stable/c/68fd718724284788fc5f379e0b7cac541429ece7 https://git.kernel.org/stable/c/a9394f21fba027147bf275b083c77955864c366a https://git.kernel.org/stable/c/9e8895f1b3d4433f6d78aa6578e9db61ca6e6830 https://git.kernel.org/stable/c/bb72d2dda85564c66d909108ea6903937a41679d https://git.kernel.org/stable/c/69f42e41256d5a234d3ae0d35fa66dc6d •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2022-48914 – xen/netfront: destroy queues before real_num_tx_queues is zeroed
https://notcve.org/view.php?id=CVE-2022-48914
In the Linux kernel, the following vulnerability has been resolved: xen/netfront: destroy queues before real_num_tx_queues is zeroed xennet_destroy_queues() relies on info->netdev->real_num_tx_queues to delete queues. Since d7dac083414eb5bb99a6d2ed53dc2c1b405224e5 ("net-sysfs: update the queue counts in the unregistration path"), unregister_netdev() indirectly sets real_num_tx_queues to 0. Those two facts together means, that xennet_destroy_queues() called from xennet_remove() cannot do its job, because it's called after unregister_netdev(). This results in kfree-ing queues that are still linked in napi, which ultimately crashes: BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 52 Comm: xenwatch Tainted: G W 5.16.10-1.32.fc32.qubes.x86_64+ #226 RIP: 0010:free_netdev+0xa3/0x1a0 Code: ff 48 89 df e8 2e e9 00 00 48 8b 43 50 48 8b 08 48 8d b8 a0 fe ff ff 48 8d a9 a0 fe ff ff 49 39 c4 75 26 eb 47 e8 ed c1 66 ff <48> 8b 85 60 01 00 00 48 8d 95 60 01 00 00 48 89 ef 48 2d 60 01 00 RSP: 0000:ffffc90000bcfd00 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88800edad000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffc90000bcfc30 RDI: 00000000ffffffff RBP: fffffffffffffea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800edad050 R13: ffff8880065f8f88 R14: 0000000000000000 R15: ffff8880066c6680 FS: 0000000000000000(0000) GS:ffff8880f3300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000e998c006 CR4: 00000000003706e0 Call Trace: <TASK> xennet_remove+0x13d/0x300 [xen_netfront] xenbus_dev_remove+0x6d/0xf0 __device_release_driver+0x17a/0x240 device_release_driver+0x24/0x30 bus_remove_device+0xd8/0x140 device_del+0x18b/0x410 ? _raw_spin_unlock+0x16/0x30 ? • https://git.kernel.org/stable/c/35cad2003b6447932cfe91f795090586306738e8 https://git.kernel.org/stable/c/a5d8e6189b134f5db61be5cd59cf5a74bb01edc7 https://git.kernel.org/stable/c/443133330a5d4a3fd429179d460cc297724fefe8 https://git.kernel.org/stable/c/0abd3f9903fae6ecf8db3c89a459971fe7925499 https://git.kernel.org/stable/c/c5eb468cbc1fa663bf0cc6c5360802dea4e611c2 https://git.kernel.org/stable/c/198cdc287769c717dafff5887c6125cb7a373bf3 https://git.kernel.org/stable/c/b40c912624775a21da32d1105e158db5f6d0554a https://git.kernel.org/stable/c/a1753d5c29a6fb9a8966dcf04cb4f3b71 •
CVSS: 6.7EPSS: 0%CPEs: 7EXPL: 0CVE-2022-48912 – netfilter: fix use-after-free in __nf_register_net_hook()
https://notcve.org/view.php?id=CVE-2022-48912
In the Linux kernel, the following vulnerability has been resolved: netfilter: fix use-after-free in __nf_register_net_hook() We must not dereference @new_hooks after nf_hook_mutex has been released, because other threads might have freed our allocated hooks already. BUG: KASAN: use-after-free in nf_hook_entries_get_hook_ops include/linux/netfilter.h:130 [inline] BUG: KASAN: use-after-free in hooks_validate net/netfilter/core.c:171 [inline] BUG: KASAN: use-after-free in __nf_register_net_hook+0x77a/0x820 net/netfilter/core.c:438 Read of size 2 at addr ffff88801c1a8000 by task syz-executor237/4430 CPU: 1 PID: 4430 Comm: syz-executor237 Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x336 mm/kasan/report.c:255 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 nf_hook_entries_get_hook_ops include/linux/netfilter.h:130 [inline] hooks_validate net/netfilter/core.c:171 [inline] __nf_register_net_hook+0x77a/0x820 net/netfilter/core.c:438 nf_register_net_hook+0x114/0x170 net/netfilter/core.c:571 nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:587 nf_synproxy_ipv6_init+0x85/0xe0 net/netfilter/nf_synproxy_core.c:1218 synproxy_tg6_check+0x30d/0x560 net/ipv6/netfilter/ip6t_SYNPROXY.c:81 xt_check_target+0x26c/0x9e0 net/netfilter/x_tables.c:1038 check_target net/ipv6/netfilter/ip6_tables.c:530 [inline] find_check_entry.constprop.0+0x7f1/0x9e0 net/ipv6/netfilter/ip6_tables.c:573 translate_table+0xc8b/0x1750 net/ipv6/netfilter/ip6_tables.c:735 do_replace net/ipv6/netfilter/ip6_tables.c:1153 [inline] do_ip6t_set_ctl+0x56e/0xb90 net/ipv6/netfilter/ip6_tables.c:1639 nf_setsockopt+0x83/0xe0 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0x122/0x180 net/ipv6/ipv6_sockglue.c:1024 rawv6_setsockopt+0xd3/0x6a0 net/ipv6/raw.c:1084 __sys_setsockopt+0x2db/0x610 net/socket.c:2180 __do_sys_setsockopt net/socket.c:2191 [inline] __se_sys_setsockopt net/socket.c:2188 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2188 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f65a1ace7d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f65a1a7f308 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f65a1ace7d9 RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 00007f65a1b574c8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 00007f65a1b55130 R13: 00007f65a1b574c0 R14: 00007f65a1b24090 R15: 0000000000022000 </TASK> The buggy address belongs to the page: page:ffffea0000706a00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c1a8 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 ffffea0001c1b108 ffffea000046dd08 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52dc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_ZERO), pid 4430, ts 1061781545818, free_ts 1061791488993 prep_new_page mm/page_alloc.c:2434 [inline] get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4165 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5389 __alloc_pages_node include/linux/gfp.h:572 [inline] alloc_pages_node include/linux/gfp.h:595 [inline] kmalloc_large_node+0x62/0x130 mm/slub.c:4438 __kmalloc_node+0x35a/0x4a0 mm/slub. ---truncated--- • https://git.kernel.org/stable/c/2420b79f8c18a75ee2417cace381f4604b9b4365 https://git.kernel.org/stable/c/05f7927b25d2635e87267ff6c79db79fb46cf313 https://git.kernel.org/stable/c/bdd8fc1b826e6f23963f5bef3f7431c6188ec954 https://git.kernel.org/stable/c/49c24579cec41e32f13d57b337fd28fb208d4a5b https://git.kernel.org/stable/c/8b0142c4143c1ca297dcf2c0cdd045d65dae2344 https://git.kernel.org/stable/c/bd61f192a339b1095dfd6d56073a5265934c2979 https://git.kernel.org/stable/c/5a8076e98dde17224dd47283b894a8b1dbe1bc72 https://git.kernel.org/stable/c/56763f12b0f02706576a088e85ef856de • CWE-416: Use After Free •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2022-48911 – netfilter: nf_queue: fix possible use-after-free
https://notcve.org/view.php?id=CVE-2022-48911
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: fix possible use-after-free Eric Dumazet says: The sock_hold() side seems suspect, because there is no guarantee that sk_refcnt is not already 0. On failure, we cannot queue the packet and need to indicate an error. The packet will be dropped by the caller. v2: split skb prefetch hunk into separate change • https://git.kernel.org/stable/c/271b72c7fa82c2c7a795bc16896149933110672d https://git.kernel.org/stable/c/21b27b2baa27423286e9b8d3f0b194d587083d95 https://git.kernel.org/stable/c/ef97921ccdc243170fcef857ba2a17cf697aece5 https://git.kernel.org/stable/c/34dc4a6a7f261736ef7183868a5bddad31c7f9e3 https://git.kernel.org/stable/c/43c25da41e3091b31a906651a43e80a2719aa1ff https://git.kernel.org/stable/c/4d05239203fa38ea8a6f31e228460da4cb17a71a https://git.kernel.org/stable/c/dd648bd1b33a828f62befa696b206c688da0ec43 https://git.kernel.org/stable/c/dcc3cb920bf7ba66ac5e9272293a9ba5f •