{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2024-26746", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.168Z", "datePublished": "2024-04-04T08:20:13.846Z", "dateUpdated": "2024-08-02T00:14:13.241Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:21:58.976Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Ensure safe user copy of completion record\n\nIf CONFIG_HARDENED_USERCOPY is enabled, copying completion record from\nevent log cache to user triggers a kernel bug.\n\n[ 1987.159822] usercopy: Kernel memory exposure attempt detected from SLUB object 'dsa0' (offset 74, size 31)!\n[ 1987.170845] ------------[ cut here ]------------\n[ 1987.176086] kernel BUG at mm/usercopy.c:102!\n[ 1987.180946] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n[ 1987.186866] CPU: 17 PID: 528 Comm: kworker/17:1 Not tainted 6.8.0-rc2+ #5\n[ 1987.194537] Hardware name: Intel Corporation AvenueCity/AvenueCity, BIOS BHSDCRB1.86B.2492.D03.2307181620 07/18/2023\n[ 1987.206405] Workqueue: wq0.0 idxd_evl_fault_work [idxd]\n[ 1987.212338] RIP: 0010:usercopy_abort+0x72/0x90\n[ 1987.217381] Code: 58 65 9c 50 48 c7 c2 17 85 61 9c 57 48 c7 c7 98 fd 6b 9c 48 0f 44 d6 48 c7 c6 b3 08 62 9c 4c 89 d1 49 0f 44 f3 e8 1e 2e d5 ff <0f> 0b 49 c7 c1 9e 42 61 9c 4c 89 cf 4d 89 c8 eb a9 66 66 2e 0f 1f\n[ 1987.238505] RSP: 0018:ff62f5cf20607d60 EFLAGS: 00010246\n[ 1987.244423] RAX: 000000000000005f RBX: 000000000000001f RCX: 0000000000000000\n[ 1987.252480] RDX: 0000000000000000 RSI: ffffffff9c61429e RDI: 00000000ffffffff\n[ 1987.260538] RBP: ff62f5cf20607d78 R08: ff2a6a89ef3fffe8 R09: 00000000fffeffff\n[ 1987.268595] R10: ff2a6a89eed00000 R11: 0000000000000003 R12: ff2a66934849c89a\n[ 1987.276652] R13: 0000000000000001 R14: ff2a66934849c8b9 R15: ff2a66934849c899\n[ 1987.284710] FS: 0000000000000000(0000) GS:ff2a66b22fe40000(0000) knlGS:0000000000000000\n[ 1987.293850] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 1987.300355] CR2: 00007fe291a37000 CR3: 000000010fbd4005 CR4: 0000000000f71ef0\n[ 1987.308413] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 1987.316470] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400\n[ 1987.324527] PKRU: 55555554\n[ 1987.327622] Call Trace:\n[ 1987.330424] \n[ 1987.332826] ? show_regs+0x6e/0x80\n[ 1987.336703] ? die+0x3c/0xa0\n[ 1987.339988] ? do_trap+0xd4/0xf0\n[ 1987.343662] ? do_error_trap+0x75/0xa0\n[ 1987.347922] ? usercopy_abort+0x72/0x90\n[ 1987.352277] ? exc_invalid_op+0x57/0x80\n[ 1987.356634] ? usercopy_abort+0x72/0x90\n[ 1987.360988] ? asm_exc_invalid_op+0x1f/0x30\n[ 1987.365734] ? usercopy_abort+0x72/0x90\n[ 1987.370088] __check_heap_object+0xb7/0xd0\n[ 1987.374739] __check_object_size+0x175/0x2d0\n[ 1987.379588] idxd_copy_cr+0xa9/0x130 [idxd]\n[ 1987.384341] idxd_evl_fault_work+0x127/0x390 [idxd]\n[ 1987.389878] process_one_work+0x13e/0x300\n[ 1987.394435] ? __pfx_worker_thread+0x10/0x10\n[ 1987.399284] worker_thread+0x2f7/0x420\n[ 1987.403544] ? _raw_spin_unlock_irqrestore+0x2b/0x50\n[ 1987.409171] ? __pfx_worker_thread+0x10/0x10\n[ 1987.414019] kthread+0x107/0x140\n[ 1987.417693] ? __pfx_kthread+0x10/0x10\n[ 1987.421954] ret_from_fork+0x3d/0x60\n[ 1987.426019] ? __pfx_kthread+0x10/0x10\n[ 1987.430281] ret_from_fork_asm+0x1b/0x30\n[ 1987.434744] \n\nThe issue arises because event log cache is created using\nkmem_cache_create() which is not suitable for user copy.\n\nFix the issue by creating event log cache with\nkmem_cache_create_usercopy(), ensuring safe user copy." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dma/idxd/init.c" ], "versions": [ { "version": "c2f156bf168f", "lessThan": "5e3022ea42e4", "status": "affected", "versionType": "git" }, { "version": "c2f156bf168f", "lessThan": "bb71e0403231", "status": "affected", "versionType": "git" }, { "version": "c2f156bf168f", "lessThan": "d3ea125df37d", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dma/idxd/init.c" ], "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.21", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.9", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/5e3022ea42e490a36ec6f2cfa6fc603deb0bace4" }, { "url": "https://git.kernel.org/stable/c/bb71e040323175e18c233a9afef32ba14fa64eb7" }, { "url": "https://git.kernel.org/stable/c/d3ea125df37dc37972d581b74a5d3785c3f283ab" } ], "title": "dmaengine: idxd: Ensure safe user copy of completion record", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-26746", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-04-04T16:00:23.530084Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:48:37.499Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:13.241Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/5e3022ea42e490a36ec6f2cfa6fc603deb0bace4", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/bb71e040323175e18c233a9afef32ba14fa64eb7", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/d3ea125df37dc37972d581b74a5d3785c3f283ab", "tags": [ "x_transferred" ] } ] } ] } }