221 lines
11 KiB
JSON
221 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-41032",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-12T12:17:45.619Z",
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"datePublished": "2024-07-29T14:31:47.600Z",
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"dateUpdated": "2026-08-05T11:34:50.674Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:34:50.674Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"mm/vmalloc.c"
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],
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"versions": [
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{
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"version": "062eacf57ad91b5c272f89dc964fd6dd9715ea7d",
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"lessThan": "28acd531c9a365dac01b32e6bc54aed8c1429bcb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "062eacf57ad91b5c272f89dc964fd6dd9715ea7d",
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"lessThan": "47f9b6e49b422392fb0e348a65eb925103ba1882",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "062eacf57ad91b5c272f89dc964fd6dd9715ea7d",
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"lessThan": "a34acf30b19bc4ee3ba2f1082756ea2604c19138",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"mm/vmalloc.c"
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],
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"versions": [
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{
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"version": "6.4",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.4",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.41",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.9.10",
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"lessThanOrEqual": "6.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.10",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.4",
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"versionEndExcluding": "6.6.41"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.4",
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"versionEndExcluding": "6.9.10"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcb"
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},
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{
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"url": "https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882"
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{
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"url": "https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138"
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}
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],
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"title": "mm: vmalloc: check if a hash-index is in cpu_possible_mask",
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"dateUpdated": "2024-08-02T04:39:56.073Z"
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"metrics": [
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-41032",
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"role": "CISA Coordinator",
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"options": [
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{
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"version": "2.0.3",
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"timestamp": "2024-09-10T16:23:43.996353Z"
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"title": "CISA ADP Vulnrichment",
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