{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-41032", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.619Z", "datePublished": "2024-07-29T14:31:47.600Z", "dateUpdated": "2026-08-05T11:34:50.674Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:34:50.674Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: vmalloc: check if a hash-index is in cpu_possible_mask\n\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.\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." } ], "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 path is the vmalloc/vmap-block allocator, reached through ordinary local allocation activity (XFS buffer mapping, f2fs/EROFS decompression, videobuf2, udmabuf) rather than through parsing of remote network data. 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 — 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" } } ] } }