{"uuid": "d5b7d142-df2a-41e8-bd90-6e068767386f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2024-43874", "type": "seen", "source": "https://t.me/cvedetector/3716", "content": "{\n  \"Source\": \"CVE FEED\",\n  \"Title\": \"CVE-2024-43874 - Linux CCP null pointer dereference vulnerability\", \n  \"Content\": \"CVE ID : CVE-2024-43874 \nPublished : Aug. 21, 2024, 1:15 a.m. | 37\u00a0minutes ago \nDescription : In the Linux kernel, the following vulnerability has been resolved:  \n  \ncrypto: ccp - Fix null pointer dereference in __sev_snp_shutdown_locked  \n  \nFix a null pointer dereference induced by DEBUG_TEST_DRIVER_REMOVE.  \nReturn from __sev_snp_shutdown_locked() if the psp_device or the  \nsev_device structs are not initialized. Without the fix, the driver will  \nproduce the following splat:  \n  \n   ccp 0000:55:00.5: enabling device (0000 -> 0002)  \n   ccp 0000:55:00.5: sev enabled  \n   ccp 0000:55:00.5: psp enabled  \n   BUG: kernel NULL pointer dereference, address: 00000000000000f0  \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 DEBUG_PAGEALLOC NOPTI  \n   CPU: 262 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc1+ #29  \n   RIP: 0010:__sev_snp_shutdown_locked+0x2e/0x150  \n   Code: 00 55 48 89 e5 41 57 41 56 41 54 53 48 83 ec 10 41 89 f7 49 89 fe 65 48 8b 04 25 28 00 00 00 48 89 45 d8 48 8b 05 6a 5a 7f 06  8b a0 f0 00 00 00 41 0f b6 9c 24 a2 00 00 00 48 83 fb 02 0f 83  \n   RSP: 0018:ffffb2ea4014b7b8 EFLAGS: 00010286  \n   RAX: 0000000000000000 RBX: ffff9e4acd2e0a28 RCX: 0000000000000000  \n   RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffb2ea4014b808  \n   RBP: ffffb2ea4014b7e8 R08: 0000000000000106 R09: 000000000003d9c0  \n   R10: 0000000000000001 R11: ffffffffa39ff070 R12: ffff9e49d40590c8  \n   R13: 0000000000000000 R14: ffffb2ea4014b808 R15: 0000000000000000  \n   FS:  0000000000000000(0000) GS:ffff9e58b1e00000(0000) knlGS:0000000000000000  \n   CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  \n   CR2: 00000000000000f0 CR3: 0000000418a3e001 CR4: 0000000000770ef0  \n   PKRU: 55555554  \n   Call Trace:  \n      \n    ? __die_body+0x6f/0xb0  \n    ? __die+0xcc/0xf0  \n    ? page_fault_oops+0x330/0x3a0  \n    ? save_trace+0x2a5/0x360  \n    ? do_user_addr_fault+0x583/0x630  \n    ? exc_page_fault+0x81/0x120  \n    ? asm_exc_page_fault+0x2b/0x30  \n    ? __sev_snp_shutdown_locked+0x2e/0x150  \n    __sev_firmware_shutdown+0x349/0x5b0  \n    ? pm_runtime_barrier+0x66/0xe0  \n    sev_dev_destroy+0x34/0xb0  \n    psp_dev_destroy+0x27/0x60  \n    sp_destroy+0x39/0x90  \n    sp_pci_remove+0x22/0x60  \n    pci_device_remove+0x4e/0x110  \n    really_probe+0x271/0x4e0  \n    __driver_probe_device+0x8f/0x160  \n    driver_probe_device+0x24/0x120  \n    __driver_attach+0xc7/0x280  \n    ? driver_attach+0x30/0x30  \n    bus_for_each_dev+0x10d/0x130  \n    driver_attach+0x22/0x30  \n    bus_add_driver+0x171/0x2b0  \n    ? unaccepted_memory_init_kdump+0x20/0x20  \n    driver_register+0x67/0x100  \n    __pci_register_driver+0x83/0x90  \n    sp_pci_init+0x22/0x30  \n    sp_mod_init+0x13/0x30  \n    do_one_initcall+0xb8/0x290  \n    ? sched_clock_noinstr+0xd/0x10  \n    ? local_clock_noinstr+0x3e/0x100  \n    ? stack_depot_save_flags+0x21e/0x6a0  \n    ? local_clock+0x1c/0x60  \n    ? stack_depot_save_flags+0x21e/0x6a0  \n    ? sched_clock_noinstr+0xd/0x10  \n    ? local_clock_noinstr+0x3e/0x100  \n    ? __lock_acquire+0xd90/0xe30  \n    ? sched_clock_noinstr+0xd/0x10  \n    ? local_clock_noinstr+0x3e/0x100  \n    ? __create_object+0x66/0x100  \n    ? local_clock+0x1c/0x60  \n    ? __create_object+0x66/0x100  \n    ? parameq+0x1b/0x90  \n    ? parse_one+0x6d/0x1d0  \n    ? parse_args+0xd7/0x1f0  \n    ? do_initcall_level+0x180/0x180  \n    do_initcall_level+0xb0/0x180  \n    do_initcalls+0x60/0xa0  \n    ? kernel_init+0x1f/0x1d0  \n    do_basic_setup+0x41/0x50  \n    kernel_init_freeable+0x1ac/0x230  \n    ? rest_init+0x1f0/0x1f0  \n    kernel_init+0x1f/0x1d0  \n    ? rest_init+0x1f0/0x1f0  \n    ret_from_fork+0x3d/0x50  \n    ? rest_init+0x1f0/0x1f0  \n    ret_from_fork_asm+0x11/0x20  \n      \n   Modules linked in:  \n   CR2: 00000000000000f0  \n   ---[ end trace 0000000000000000 ]---  \n   RIP: 0010:__sev_snp_shutdown_locked+0x2e/0x150  \n   Code: 00 55[...]", "creation_timestamp": "2024-08-21T04:00:42.000000Z"}