CVE-2024-41032

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Exploitation requires the attacker to be executing code on the affected system.\nAC:L - On an affected system the faulty index is a pure function of the vmap address, so a local user triggers it deterministically with routine file I/O \u2014 no race to win and no memory layout the attacker cannot influence, since the aliased page is a freed-initmem page returned to the buddy allocator and therefore sprayable.\nPR:L - No capability, namespace, or filesystem-admin check exists anywhere on the path; `vb_alloc()`/`vb_free()` are reached by any unprivileged user reading or writing files on XFS, f2fs (compression), or EROFS, or opening a V4L2/udmabuf device.\nUI:N - The attacker performs the triggering I/O themselves; no victim action, mount, or file-open by another user is needed.\nS:U - The faulty per-CPU access and the resulting corruption are both within the kernel's own security authority, with no crossing of a hypervisor, IOMMU, or sandbox boundary.\nC:H - The bogus per-CPU address aliases a freed initmem page that has been returned to the page allocator, so `xa_load()`/`vmap_ram_vread_iter()` dereference an `xa_head` pointer sourced from attacker-influenceable memory, giving an out-of-bounds/arbitrary kernel read primitive rather than a bounded leak.\nI:H - `xa_insert()` writes into that reallocated page, and `vb_free()` performs `spin_lock()`, `bitmap_clear()`, `WRITE_ONCE()` and `kfree_rcu()` on an unvalidated `vb` pointer loaded from it, yielding arbitrary-write and arbitrary-free primitives suitable for control-flow hijack.\nA:H - The reported and guaranteed outcome is a kernel oops on SPARC (dereferencing the 0xcc-poisoned or reallocated stale percpu alias), plus reachable `BUG_ON(tmp != vb)` in `free_vmap_block()`, causing a panic and full denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/vmalloc.c"], "versions": [{"version": "062eacf57ad91b5c272f89dc964fd6dd9715ea7d", "lessThan": "28acd531c9a365dac01b32e6bc54aed8c1429bcb", "status": "affected", "versionType": "git"}, {"version": "062eacf57ad91b5c272f89dc964fd6dd9715ea7d", "lessThan": "47f9b6e49b422392fb0e348a65eb925103ba1882", "status": "affected", "versionType": "git"}, {"version": "062eacf57ad91b5c272f89dc964fd6dd9715ea7d", "lessThan": "a34acf30b19bc4ee3ba2f1082756ea2604c19138", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/vmalloc.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.41", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9.10", "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": "6.4", "versionEndExcluding": "6.6.41"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.9.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcb"}, {"url": "https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882"}, {"url": "https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138"}], "title": "mm: vmalloc: check if a hash-index is in cpu_possible_mask", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:39:56.073Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcb", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-41032", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:23:43.996353Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:03.799Z"}}]}}

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In this scenario addr_to_vb_xa()\nhash function can return an index which accesses to not-possible and not\nsetup CPU area using per_cpu() macro. This results in an oops on SPARC.\n\nA per-cpu vmap_block_queue is also used as hash table, incorrectly\nassuming the cpu_possible_mask has no gaps. Fix it by adjusting an index\nto a next possible CPU."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm: vmalloc: comprueba si hay un \u00edndice hash en cpu_possible_mask El problema es que hay sistemas donde cpu_possible_mask tiene espacios entre las CPU configuradas, por ejemplo SPARC. En este escenario, la funci\u00f3n hash addr_to_vb_xa() puede devolver un \u00edndice que accede a un \u00e1rea de CPU no posible y no configurada usando la macro per_cpu(). Esto da como resultado un \u00a1Uy en SPARC! Tambi\u00e9n se utiliza una vmap_block_queue por CPU como tabla hash, asumiendo incorrectamente que cpu_possible_mask no tiene espacios. Solucionarlo ajustando un \u00edndice a la siguiente CPU posible."}], "id": "CVE-2024-41032", "lastModified": "2026-08-04T11:19:20.053", "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": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-41032", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T16:23:43.996353Z", "version": "2.0.3"}}]}, "published": "2024-07-29T15:15:11.850", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}], "bugzilla": {"description": "kernel: mm: vmalloc: check if a hash-index is in cpu_possible_mask", "id": "2300398", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2300398"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/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:\nmm: vmalloc: check if a hash-index is in cpu_possible_mask\nThe problem is that there are systems where cpu_possible_mask has gaps\nbetween set CPUs, for example SPARC. In this scenario addr_to_vb_xa()\nhash function can return an index which accesses to not-possible and not\nsetup CPU area using per_cpu() macro. This results in an oops on SPARC.\nA per-cpu vmap_block_queue is also used as hash table, incorrectly\nassuming the cpu_possible_mask has no gaps. Fix it by adjusting an index\nto a next possible CPU."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-41032", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-41032\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-41032\nhttps://lore.kernel.org/linux-cve-announce/2024072922-CVE-2024-41032-6284@gregkh/T"], "threat_severity": "Moderate"}

{}