201 lines
10 KiB
JSON
201 lines
10 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-2022-49952",
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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": "2025-06-18T10:57:27.382Z",
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"datePublished": "2025-06-18T11:00:15.434Z",
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"dateUpdated": "2026-08-05T08:56:52.538Z"
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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": "2026-08-05T08:56:52.538Z"
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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\nmisc: fastrpc: fix memory corruption on probe\n\nAdd the missing sanity check on the probed-session count to avoid\ncorrupting memory beyond the fixed-size slab-allocated session array\nwhen there are more than FASTRPC_MAX_SESSIONS sessions defined in the\ndevicetree."
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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 bug is in the Qualcomm FastRPC platform compute-cb probe path during local DSP/rpmsg bring-up, not reachable via network packets or adjacent-link protocols.\nAC:L - On realistic Qualcomm device trees such as SC8280XP with 14 CDSP context banks (when FASTRPC_MAX_SESSIONS was 13) or oversized qcom,nsessions, probe reliably performs the out-of-bounds session array write with no attacker-uncontrollable race.\nPR:L - fastrpc_cb_probe runs from trusted DT during device bring-up without a capability gate; on primary Android/Qualcomm deployments the resulting kernel corruption is then reachable by low-privilege local processes using the fastrpc device nodes.\nUI:N - Exploitation requires no victim action; the overflow is triggered automatically when the compute-cb devices are probed.\nS:U - Impact is confined to kernel memory in the same host OS security authority (local privilege escalation), with no VM or IOMMU boundary crossed.\nC:H - The out-of-bounds write past the fixed session array corrupts adjacent channel_ctx fields (including idr and list pointers), which can be leveraged for arbitrary kernel memory disclosure.\nI:H - Out-of-bounds write into the spinlock, idr, and users list immediately following the session array enables classic kernel heap/list corruption primitives for arbitrary write and control-flow hijacking.\nA:H - Corrupting the channel spinlock, idr, or list_head reliably causes kernel oops, panic, or hangs when those structures are subsequently used."
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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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"drivers/misc/fastrpc.c"
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],
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"versions": [
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{
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"version": "f6f9279f2bf0e37e2f1fb119d8832b8568536a04",
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"lessThan": "ec186b9f4aa2e6444d5308a6cc268aada7007639",
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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": "f6f9279f2bf0e37e2f1fb119d8832b8568536a04",
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"lessThan": "c99bc901d5eb9fbdd7bd39f625e170ce97390336",
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"status": "affected",
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"versionType": "git"
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{
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"version": "f6f9279f2bf0e37e2f1fb119d8832b8568536a04",
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"lessThan": "0e33b0f322fecd7a92d9dc186535cdf97940a856",
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"status": "affected",
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"versionType": "git"
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{
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"status": "affected",
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{
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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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"drivers/misc/fastrpc.c"
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],
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"versions": [
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{
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"version": "5.1",
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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": "5.1",
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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": "5.4.213",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.142",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.66",
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"lessThanOrEqual": "5.15.*",
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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": "5.19.8",
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"lessThanOrEqual": "5.19.*",
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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": "6.0",
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/ec186b9f4aa2e6444d5308a6cc268aada7007639"
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},
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{
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"url": "https://git.kernel.org/stable/c/c99bc901d5eb9fbdd7bd39f625e170ce97390336"
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},
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{
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"url": "https://git.kernel.org/stable/c/0e33b0f322fecd7a92d9dc186535cdf97940a856"
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},
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{
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"url": "https://git.kernel.org/stable/c/c0425c2facd9166fa083f90c9f3187ace0c7837a"
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},
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{
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"url": "https://git.kernel.org/stable/c/9baa1415d9abdd1e08362ea2dcfadfacee8690b5"
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}
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],
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"title": "misc: fastrpc: fix memory corruption on probe",
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