{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-35808", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T12:19:12.342Z", "datePublished": "2024-05-17T13:23:15.515Z", "dateUpdated": "2026-08-05T11:30:03.700Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:30:03.700Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/dm-raid: don't call md_reap_sync_thread() directly\n\nCurrently md_reap_sync_thread() is called from raid_message() directly\nwithout holding 'reconfig_mutex', this is definitely unsafe because\nmd_reap_sync_thread() can change many fields that is protected by\n'reconfig_mutex'.\n\nHowever, hold 'reconfig_mutex' here is still problematic because this\nwill cause deadlock, for example, commit 130443d60b1b (\"md: refactor\nidle/frozen_sync_thread() to fix deadlock\").\n\nFix this problem by using stop_sync_thread() to unregister sync_thread,\nlike md/raid did." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable `raid_message()` handler is reached only through the local `DM_TARGET_MSG` ioctl on /dev/mapper/control (`ctl_ioctl` → `target_message` → `ti->type->message`). No remote or adjacent network path exists.\nAC:L - The attacker controls both sides of the race — it can start a sync/reshape with a `check`/`repair`/`resync` message and then issue concurrent `idle`/`frozen` messages from multiple threads, so two contexts enter `md_reap_sync_thread()` simultaneously; dm-raid is a standard distro module, so no rare configuration is needed.\nPR:L - The device-mapper control ioctl is gated by CAP_SYS_ADMIN, but this is delegated capability rather than exclusive host root in practice — privileged containers, storage-management daemons and LVM helper services hold it — and kernel-CNA scoring consistently treats dm-ioctl-reachable defects as low-privilege local attacks.\nUI:N - The attacker performs every step itself (create/activate the dm-raid target, start the sync thread, issue the racing messages); no action by another user or administrator is required.\nS:U - The corruption is confined to kernel memory and on-disk RAID metadata managed by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unlocked reap yields a use-after-free/double-free of `struct md_thread` plus an unsynchronized walk of the `mddev->disks` rdev list, and reclaiming the freed slab object gives an attacker-controlled read primitive over kernel memory.\nI:H - The double `kfree()`/UAF is a classic heap-corruption primitive exploitable for arbitrary write and control-flow hijack, and additionally `md_update_sb()` and `pers->finish_reshape()` run concurrently with the md thread, writing inconsistent RAID superblocks and mutating array geometry mid-reshape.\nA:H - Double-free/UAF of the sync thread reliably produces slab corruption, oops, and kernel panic, and the unsynchronized recovery-flag manipulation can wedge the sync-thread state machine into the deadlock/hang class the commit series explicitly addresses." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/md/dm-raid.c" ], "versions": [ { "version": "be83651f0050ca8621d58d35dad558e9c45cb18f", "lessThan": "347dcdc15a1706f61aa545ae498ededdf31aeebc", "status": "affected", "versionType": "git" }, { "version": "be83651f0050ca8621d58d35dad558e9c45cb18f", "lessThan": "9e59b8d76ff511505eb0dd1478329f09e0f04669", "status": "affected", "versionType": "git" }, { "version": "be83651f0050ca8621d58d35dad558e9c45cb18f", "lessThan": "cd32b27a66db8776d8b8e82ec7d7dde97a8693b0", "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/md/dm-raid.c" ], "versions": [ { "version": "3.10", "status": "affected" }, { "version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.12", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.3", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.7.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.8.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/347dcdc15a1706f61aa545ae498ededdf31aeebc" }, { "url": "https://git.kernel.org/stable/c/9e59b8d76ff511505eb0dd1478329f09e0f04669" }, { "url": "https://git.kernel.org/stable/c/cd32b27a66db8776d8b8e82ec7d7dde97a8693b0" } ], "title": "md/dm-raid: don't call md_reap_sync_thread() directly", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-35808", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-24T14:17:42.560355Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:34:02.913Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:47.484Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/347dcdc15a1706f61aa545ae498ededdf31aeebc", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/9e59b8d76ff511505eb0dd1478329f09e0f04669", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/cd32b27a66db8776d8b8e82ec7d7dde97a8693b0", "tags": [ "x_transferred" ] } ] } ] } }