{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2024-35795", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T12:19:12.339Z", "datePublished": "2024-05-17T13:23:06.900Z", "dateUpdated": "2024-09-11T17:33:22.417Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:29:06.543Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix deadlock while reading mqd from debugfs\n\nAn errant disk backup on my desktop got into debugfs and triggered the\nfollowing deadlock scenario in the amdgpu debugfs files. The machine\nalso hard-resets immediately after those lines are printed (although I\nwasn't able to reproduce that part when reading by hand):\n\n[ 1318.016074][ T1082] ======================================================\n[ 1318.016607][ T1082] WARNING: possible circular locking dependency detected\n[ 1318.017107][ T1082] 6.8.0-rc7-00015-ge0c8221b72c0 #17 Not tainted\n[ 1318.017598][ T1082] ------------------------------------------------------\n[ 1318.018096][ T1082] tar/1082 is trying to acquire lock:\n[ 1318.018585][ T1082] ffff98c44175d6a0 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0x40/0x80\n[ 1318.019084][ T1082]\n[ 1318.019084][ T1082] but task is already holding lock:\n[ 1318.020052][ T1082] ffff98c4c13f55f8 (reservation_ww_class_mutex){+.+.}-{3:3}, at: amdgpu_debugfs_mqd_read+0x6a/0x250 [amdgpu]\n[ 1318.020607][ T1082]\n[ 1318.020607][ T1082] which lock already depends on the new lock.\n[ 1318.020607][ T1082]\n[ 1318.022081][ T1082]\n[ 1318.022081][ T1082] the existing dependency chain (in reverse order) is:\n[ 1318.023083][ T1082]\n[ 1318.023083][ T1082] -> #2 (reservation_ww_class_mutex){+.+.}-{3:3}:\n[ 1318.024114][ T1082] __ww_mutex_lock.constprop.0+0xe0/0x12f0\n[ 1318.024639][ T1082] ww_mutex_lock+0x32/0x90\n[ 1318.025161][ T1082] dma_resv_lockdep+0x18a/0x330\n[ 1318.025683][ T1082] do_one_initcall+0x6a/0x350\n[ 1318.026210][ T1082] kernel_init_freeable+0x1a3/0x310\n[ 1318.026728][ T1082] kernel_init+0x15/0x1a0\n[ 1318.027242][ T1082] ret_from_fork+0x2c/0x40\n[ 1318.027759][ T1082] ret_from_fork_asm+0x11/0x20\n[ 1318.028281][ T1082]\n[ 1318.028281][ T1082] -> #1 (reservation_ww_class_acquire){+.+.}-{0:0}:\n[ 1318.029297][ T1082] dma_resv_lockdep+0x16c/0x330\n[ 1318.029790][ T1082] do_one_initcall+0x6a/0x350\n[ 1318.030263][ T1082] kernel_init_freeable+0x1a3/0x310\n[ 1318.030722][ T1082] kernel_init+0x15/0x1a0\n[ 1318.031168][ T1082] ret_from_fork+0x2c/0x40\n[ 1318.031598][ T1082] ret_from_fork_asm+0x11/0x20\n[ 1318.032011][ T1082]\n[ 1318.032011][ T1082] -> #0 (&mm->mmap_lock){++++}-{3:3}:\n[ 1318.032778][ T1082] __lock_acquire+0x14bf/0x2680\n[ 1318.033141][ T1082] lock_acquire+0xcd/0x2c0\n[ 1318.033487][ T1082] __might_fault+0x58/0x80\n[ 1318.033814][ T1082] amdgpu_debugfs_mqd_read+0x103/0x250 [amdgpu]\n[ 1318.034181][ T1082] full_proxy_read+0x55/0x80\n[ 1318.034487][ T1082] vfs_read+0xa7/0x360\n[ 1318.034788][ T1082] ksys_read+0x70/0xf0\n[ 1318.035085][ T1082] do_syscall_64+0x94/0x180\n[ 1318.035375][ T1082] entry_SYSCALL_64_after_hwframe+0x46/0x4e\n[ 1318.035664][ T1082]\n[ 1318.035664][ T1082] other info that might help us debug this:\n[ 1318.035664][ T1082]\n[ 1318.036487][ T1082] Chain exists of:\n[ 1318.036487][ T1082] &mm->mmap_lock --> reservation_ww_class_acquire --> reservation_ww_class_mutex\n[ 1318.036487][ T1082]\n[ 1318.037310][ T1082] Possible unsafe locking scenario:\n[ 1318.037310][ T1082]\n[ 1318.037838][ T1082] CPU0 CPU1\n[ 1318.038101][ T1082] ---- ----\n[ 1318.038350][ T1082] lock(reservation_ww_class_mutex);\n[ 1318.038590][ T1082] lock(reservation_ww_class_acquire);\n[ 1318.038839][ T1082] lock(reservation_ww_class_mutex);\n[ 1318.039083][ T1082] rlock(&mm->mmap_lock);\n[ 1318.039328][ T1082]\n[ 1318.039328][ T1082] *** DEADLOCK ***\n[ 1318.039328][ T1082]\n[ 1318.040029][ T1082] 1 lock held by tar/1082:\n[ 1318.040259][ T1082] #0: ffff98c4c13f55f8 (reservation_ww_class_mutex){+.+.}-{3:3}, at: amdgpu_debugfs_mqd_read+0x6a/0x250 [amdgpu]\n[ 1318.040560][ T1082]\n[ 1318.040560][ T1082] stack backtrace:\n[\n---truncated---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c" ], "versions": [ { "version": "445d85e3c1df", "lessThan": "197f6d6987c5", "status": "affected", "versionType": "git" }, { "version": "445d85e3c1df", "lessThan": "8b03556da6e5", "status": "affected", "versionType": "git" }, { "version": "445d85e3c1df", "lessThan": "4687e3c6ee87", "status": "affected", "versionType": "git" }, { "version": "445d85e3c1df", "lessThan": "8678b1060ae2", "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/gpu/drm/amd/amdgpu/amdgpu_ring.c" ], "versions": [ { "version": "6.5", "status": "affected" }, { "version": "0", "lessThan": "6.5", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.24", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.12", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.3", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/197f6d6987c55860f6eea1c93e4f800c59078874" }, { "url": "https://git.kernel.org/stable/c/8b03556da6e576c62664b6cd01809e4a09d53b5b" }, { "url": "https://git.kernel.org/stable/c/4687e3c6ee877ee25e57b984eca00be53b9a8db5" }, { "url": "https://git.kernel.org/stable/c/8678b1060ae2b75feb60b87e5b75e17374e3c1c5" } ], "title": "drm/amdgpu: fix deadlock while reading mqd from debugfs", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:47.574Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/197f6d6987c55860f6eea1c93e4f800c59078874", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/8b03556da6e576c62664b6cd01809e4a09d53b5b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4687e3c6ee877ee25e57b984eca00be53b9a8db5", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/8678b1060ae2b75feb60b87e5b75e17374e3c1c5", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-35795", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:42:44.762412Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:22.417Z" } } ] } }