159 lines
8.1 KiB
JSON
159 lines
8.1 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-2026-64520",
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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": "2026-07-19T15:36:31.794Z",
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"datePublished": "2026-07-25T09:14:46.005Z",
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"dateUpdated": "2026-08-05T12:42:34.515Z"
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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": "2026-08-05T12:42:34.515Z"
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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\nfirmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies\n\nThe register-based PARTITION_INFO_GET path trusted the firmware-provided\nindices when copying partition descriptors into the caller buffer.\nReject inconsistent counts or index progressions so the copy loop cannot\nwrite past the allocated array.\n\n(fixed cur_idx when exactly one descriptor in the first fragment)"
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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:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.4,
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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 - Exploitation occurs through local SMC/HVC responses from the co-resident FF-A partition manager or hypervisor; no network, physical-device, or userspace path reaches the vulnerable parser.\nAC:L - The responder controls both discovery responses and every fragment, allowing deterministic count mismatches, invalid indices, and non-progressing sequences without a race or condition outside its control.\nPR:N - The malformed response is accepted automatically during kernel initialization without authentication or Linux credentials; the triggering firmware or hypervisor requires no privileges within the affected Linux instance.\nUI:N - Partition discovery executes automatically during FF-A initialization, so exploitation requires no victim action.\nS:U - The vulnerable driver and the corrupted heap, stack, and control-flow resources are all within the same Linux kernel security authority.\nC:H - Oversized fragments read beyond the register-result stack object, while exploitable heap corruption can provide kernel-memory disclosure primitives.\nI:H - The responder can repeatedly supply fully controlled 24-byte descriptors beyond the allocated array, enabling extensive heap corruption and potential control-flow hijacking.\nA:H - Large or non-progressing indices can cause massive out-of-bounds writes, infinite processing, kernel faults, or panic."
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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/firmware/arm_ffa/driver.c"
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],
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"versions": [
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{
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"version": "ba85c644ac8dc37d9b01a3332c2f142cb4d46954",
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"lessThan": "f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95",
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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": "ba85c644ac8dc37d9b01a3332c2f142cb4d46954",
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"lessThan": "79d95c02ae0a95e6e80e8e92b7ca74ecee02854f",
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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": "ba85c644ac8dc37d9b01a3332c2f142cb4d46954",
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"lessThan": "3974ea1938406f9bfa7c1f48d4e43533f447bb08",
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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/firmware/arm_ffa/driver.c"
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],
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"versions": [
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{
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"version": "6.12",
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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": "6.12",
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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": "6.18.34",
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"lessThanOrEqual": "6.18.*",
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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": "7.0.11",
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"lessThanOrEqual": "7.0.*",
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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": "7.1",
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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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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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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": "6.12",
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"versionEndExcluding": "6.18.34"
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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": "6.12",
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"versionEndExcluding": "7.0.11"
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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": "6.12",
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"versionEndExcluding": "7.1"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95"
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},
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{
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"url": "https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f"
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},
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{
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"url": "https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08"
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}
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],
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"title": "firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |