CVE-2024-38384

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-38384", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-21T11:16:40.612Z", "datePublished": "2024-06-24T13:50:51.033Z", "dateUpdated": "2026-08-05T11:32:34.192Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:32:34.192Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix list corruption from reorder of WRITE ->lqueued\n\n__blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_start\nis being executed.\n\nIf WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' in\nthe loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with one\nstat instance being added in blk_cgroup_bio_start(), then the local\nlist in __blkcg_rstat_flush() could be corrupted.\n\nFix the issue by adding one barrier."}], "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 code is reached through local block-I/O submission (`submit_bio_noacct_nocheck` \u2192 `blk_cgroup_bio_start`) and local cgroupfs reads of `io.stat`; there is no network-facing path into blk-cgroup stat accounting.\nAC:L - The attacker drives both sides of the race \u2014 continuous bio submission on multiple CPUs plus a tight loop reading `io.stat` (or removing cgroups) to force `blkcg_rstat_flush` \u2014 and can retry indefinitely with no cost until the reorder window is hit on any weakly-ordered CPU.\nPR:L - No capability check exists on either code path; any unprivileged local user performing ordinary file I/O inside a non-root cgroup-v2 blkcg (the default for every systemd user session and every container) can reach both `blk_cgroup_bio_start()` and, via their delegated subtree's `io.stat`, the flush side.\nUI:N - The attacker triggers everything from its own processes \u2014 I/O submission and stat flushing \u2014 with no action required from any other user or administrator.\nS:U - The corruption is confined to kernel block-cgroup structures within the same security authority; no VM, IOMMU, or hypervisor boundary is crossed.\nC:H - Corruption of the lockless list defeats the `__blkg_release()` flush that guarantees no `blkg_iostat_set` is queued before `free_percpu(blkg->iostat_cpu)`, leaving the list pointing into freed per-CPU memory that is then dereferenced (`bisc->blkg`, `blkg->parent`) \u2014 a use-after-free read that can be leveraged for kernel memory disclosure.\nI:H - The same stale-pointer condition makes `blkcg_iostat_update()` write through a `blkg` pointer read out of freed memory, giving an attacker-influenceable write primitive; the llist `next` pointers themselves are also corrupted with attacker-timed values.\nA:H - Re-adding a node that is still linked creates a cycle in the lockless list, so the next `__blkcg_rstat_flush()` loops forever while holding the `blkg_stat_lock` raw spinlock with interrupts disabled under `cgroup_rstat_lock` \u2014 a hard lockup / kernel panic that wedges the whole system."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/blk-cgroup.c"], "versions": [{"version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817", "lessThan": "714e59b5456e4d6e4295a9968c564abe193f461c", "status": "affected", "versionType": "git"}, {"version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817", "lessThan": "785298ab6b802afa75089239266b6bbea590809c", "status": "affected", "versionType": "git"}, {"version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817", "lessThan": "d0aac2363549e12cc79b8e285f13d5a9f42fd08e", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/blk-cgroup.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.33", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9.4", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10", "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": "6.2", "versionEndExcluding": "6.6.33"}, {"vulnerable": true, "criteria": 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"availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-06-25T13:27:38.979262Z", "id": "CVE-2024-38384", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-25T13:37:27.542Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:04:25.142Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/714e59b5456e4d6e4295a9968c564abe193f461c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/785298ab6b802afa75089239266b6bbea590809c", "tags": ["x_transferred"]}, {"url": 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"descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix list corruption from reorder of WRITE ->lqueued\n\n__blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_start\nis being executed.\n\nIf WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' in\nthe loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with one\nstat instance being added in blk_cgroup_bio_start(), then the local\nlist in __blkcg_rstat_flush() could be corrupted.\n\nFix the issue by adding one barrier."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:29:23.958Z"}}}, "cveMetadata": {"cveId": "CVE-2024-38384", "state": "PUBLISHED", "dateUpdated": "2024-11-05T09:29:23.958Z", "dateReserved": "2024-06-21T11:16:40.612Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-06-24T13:50:51.033Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["block/blk-cgroup.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "714e59b5456e4d6e4295a9968c564abe193f461c", "status": "affected", "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817", "versionType": "git"}, {"lessThan": "785298ab6b802afa75089239266b6bbea590809c", "status": "affected", "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817", "versionType": "git"}, {"lessThan": "d0aac2363549e12cc79b8e285f13d5a9f42fd08e", "status": "affected", "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["block/blk-cgroup.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.2"}, {"lessThan": "6.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.33", "versionType": "semver"}, {"lessThanOrEqual": "6.9.*", "status": "unaffected", "version": "6.9.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.10", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"affectedData": [{"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"lessThan": "714e59b5456e", "status": "affected", "version": "3b8cc6298724", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"lessThan": "785298ab6b80", "status": "affected", "version": "3b8cc6298724", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"lessThan": "d0aac2363549", "status": "affected", "version": "3b8cc6298724", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"status": "affected", "version": "6.2"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"lessThan": "6.2", "status": "unaffected", "version": "0", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"lessThanOrEqual": "6.7", "status": "unaffected", "version": "6.6.33", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"lessThanOrEqual": "6.10", "status": "unaffected", "version": "6.9.4", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"status": "unaffected", "version": "6.10-rc1"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FCE796DF-3B50-4DC6-BAE5-95271068FC9E", "versionEndExcluding": "6.6.33", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "991B9791-966A-4D18-9E8D-A8AB128E5627", "versionEndExcluding": "6.9.4", "versionStartIncluding": "6.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix list corruption from reorder of WRITE ->lqueued\n\n__blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_start\nis being executed.\n\nIf WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' in\nthe loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with one\nstat instance being added in blk_cgroup_bio_start(), then the local\nlist in __blkcg_rstat_flush() could be corrupted.\n\nFix the issue by adding one barrier."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: blk-cgroup: corrupci\u00f3n de la lista de arreglos debido al reordenamiento de WRITE ->lqueued __blkcg_rstat_flush() se puede ejecutar en cualquier momento, especialmente cuando se est\u00e1 ejecutando blk_cgroup_bio_start. Si la ESCRITURA de `->lqueued` se reordena con la READ de 'bisc->lnode.next' en el bucle de __blkcg_rstat_flush(), se puede asignar `next_bisc` agregando una instancia de estad\u00edstica en blk_cgroup_bio_start(), entonces el La lista local en __blkcg_rstat_flush() podr\u00eda estar da\u00f1ada. Solucione el problema agregando una barrera."}], "id": "CVE-2024-38384", "lastModified": "2026-08-04T11:18:40.220", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-38384", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-06-25T13:27:38.979262Z", "version": "2.0.3"}}]}, "published": "2024-06-24T14:15:12.547", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/714e59b5456e4d6e4295a9968c564abe193f461c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/785298ab6b802afa75089239266b6bbea590809c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0aac2363549e12cc79b8e285f13d5a9f42fd08e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/714e59b5456e4d6e4295a9968c564abe193f461c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/785298ab6b802afa75089239266b6bbea590809c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0aac2363549e12cc79b8e285f13d5a9f42fd08e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5066", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.77.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-07T00:00:00Z"}, {"advisory": "RHSA-2024:5067", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.77.1.rt14.362.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-07T00:00:00Z"}, {"advisory": "RHSA-2024:10771", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.47.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2024-12-04T00:00:00Z"}], "bugzilla": {"description": "kernel: blk-cgroup: fix list corruption from reorder of WRITE ->lqueued", "id": "2294220", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2294220"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nblk-cgroup: fix list corruption from reorder of WRITE ->lqueued\n__blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_start\nis being executed.\nIf WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' in\nthe loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with one\nstat instance being added in blk_cgroup_bio_start(), then the local\nlist in __blkcg_rstat_flush() could be corrupted.\nFix the issue by adding one barrier."], "name": "CVE-2024-38384", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-38384\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-38384\nhttps://lore.kernel.org/linux-cve-announce/2024062455-CVE-2024-38384-47e5@gregkh/T"], "threat_severity": "Low"}

{}