{ "containers": { "cna": { "providerMetadata": { "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix null pointer deref when receiving skb during sock creation\n\nThe panic below is observed when receiving ICMP packets with secmark set\nwhile an ICMP raw socket is being created. SK_CTX(sk)->label is updated\nin apparmor_socket_post_create(), but the packet is delivered to the\nsocket before that, causing the null pointer dereference.\nDrop the packet if label context is not set.\n\n BUG: kernel NULL pointer dereference, address: 000000000000004c\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 0 PID: 407 Comm: a.out Not tainted 6.4.12-arch1-1 #1 3e6fa2753a2d75925c34ecb78e22e85a65d083df\n Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 05/28/2020\n RIP: 0010:aa_label_next_confined+0xb/0x40\n Code: 00 00 48 89 ef e8 d5 25 0c 00 e9 66 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 0f 1f 44 00 00 89 f0 <8b> 77 4c 39 c6 7e 1f 48 63 d0 48 8d 14 d7 eb 0b 83 c0 01 48 83 c2\n RSP: 0018:ffffa92940003b08 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000e\n RDX: ffffa92940003be8 RSI: 0000000000000000 RDI: 0000000000000000\n RBP: ffff8b57471e7800 R08: ffff8b574c642400 R09: 0000000000000002\n R10: ffffffffbd820eeb R11: ffffffffbeb7ff00 R12: ffff8b574c642400\n R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000\n FS: 00007fb092ea7640(0000) GS:ffff8b577bc00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000000000000004c CR3: 00000001020f2005 CR4: 00000000007706f0\n PKRU: 55555554\n Call Trace:\n \n ? __die+0x23/0x70\n ? page_fault_oops+0x171/0x4e0\n ? exc_page_fault+0x7f/0x180\n ? asm_exc_page_fault+0x26/0x30\n ? aa_label_next_confined+0xb/0x40\n apparmor_secmark_check+0xec/0x330\n security_sock_rcv_skb+0x35/0x50\n sk_filter_trim_cap+0x47/0x250\n sock_queue_rcv_skb_reason+0x20/0x60\n raw_rcv+0x13c/0x210\n raw_local_deliver+0x1f3/0x250\n ip_protocol_deliver_rcu+0x4f/0x2f0\n ip_local_deliver_finish+0x76/0xa0\n __netif_receive_skb_one_core+0x89/0xa0\n netif_receive_skb+0x119/0x170\n ? __netdev_alloc_skb+0x3d/0x140\n vmxnet3_rq_rx_complete+0xb23/0x1010 [vmxnet3 56a84f9c97178c57a43a24ec073b45a9d6f01f3a]\n vmxnet3_poll_rx_only+0x36/0xb0 [vmxnet3 56a84f9c97178c57a43a24ec073b45a9d6f01f3a]\n __napi_poll+0x28/0x1b0\n net_rx_action+0x2a4/0x380\n __do_softirq+0xd1/0x2c8\n __irq_exit_rcu+0xbb/0xf0\n common_interrupt+0x86/0xa0\n \n \n asm_common_interrupt+0x26/0x40\n RIP: 0010:apparmor_socket_post_create+0xb/0x200\n Code: 08 48 85 ff 75 a1 eb b1 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 41 54 <55> 48 89 fd 53 45 85 c0 0f 84 b2 00 00 00 48 8b 1d 80 56 3f 02 48\n RSP: 0018:ffffa92940ce7e50 EFLAGS: 00000286\n RAX: ffffffffbc756440 RBX: 0000000000000000 RCX: 0000000000000001\n RDX: 0000000000000003 RSI: 0000000000000002 RDI: ffff8b574eaab740\n RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\n R10: ffff8b57444cec70 R11: 0000000000000000 R12: 0000000000000003\n R13: 0000000000000002 R14: ffff8b574eaab740 R15: ffffffffbd8e4748\n ? __pfx_apparmor_socket_post_create+0x10/0x10\n security_socket_post_create+0x4b/0x80\n __sock_create+0x176/0x1f0\n __sys_socket+0x89/0x100\n __x64_sys_socket+0x17/0x20\n do_syscall_64+0x5d/0x90\n ? do_syscall_64+0x6c/0x90\n ? do_syscall_64+0x6c/0x90\n ? do_syscall_64+0x6c/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "security/apparmor/lsm.c" ], "versions": [ { "version": "ab9f2115081a", "lessThan": "0abe35bc48d4", "status": "affected", "versionType": "git" }, { "version": "ab9f2115081a", "lessThan": "347dcb84a487", "status": "affected", "versionType": "git" }, { "version": "ab9f2115081a", "lessThan": "290a6b88e8c1", "status": "affected", "versionType": "git" }, { "version": "ab9f2115081a", "lessThan": "ead2ad1d9f04", "status": "affected", "versionType": "git" }, { "version": "ab9f2115081a", "lessThan": "6c920754f62c", "status": "affected", "versionType": "git" }, { "version": "ab9f2115081a", "lessThan": "46c17ead5b73", "status": "affected", "versionType": "git" }, { "version": "ab9f2115081a", "lessThan": "fce09ea31450", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "security/apparmor/lsm.c" ], "versions": [ { "version": "4.20", "status": "affected" }, { "version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.282", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.224", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.165", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.103", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.44", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.10.3", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.11", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0abe35bc48d4ec80424b1f4b3560c0e082cbd5c1" }, { "url": "https://git.kernel.org/stable/c/347dcb84a4874b5fb375092c08d8cc4069b94f81" }, { "url": "https://git.kernel.org/stable/c/290a6b88e8c19b6636ed1acc733d1458206f7697" }, { "url": "https://git.kernel.org/stable/c/ead2ad1d9f045f26fdce3ef1644913b3a6cd38f2" }, { "url": "https://git.kernel.org/stable/c/6c920754f62cefc63fccdc38a062c7c3452e2961" }, { "url": "https://git.kernel.org/stable/c/46c17ead5b7389e22e7dc9903fd0ba865d05bda2" }, { "url": "https://git.kernel.org/stable/c/fce09ea314505a52f2436397608fa0a5d0934fb1" } ], "title": "apparmor: Fix null pointer deref when receiving skb during sock creation", "x_generator": { "engine": "bippy-c9c4e1df01b2" } } }, "cveMetadata": { "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", "cveID": "CVE-2023-52889", "requesterUserId": "gregkh@kernel.org", "serial": "1", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.0" }