245 lines
13 KiB
JSON
245 lines
13 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-2026-97444",
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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": "2026-09-24T14:53:16.870Z",
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"datePublished": "2026-09-24T16:03:59.121Z",
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"dateUpdated": "2026-10-03T10:58:28.686Z"
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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": "2026-10-03T10:58:28.686Z"
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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\nACPICA: add boundary checks in two places\n\nAdd boundary checks in acpi_ps_get_next_namestring() and\nacpi_ps_peek_opcode() to prevent out-of-bounds access."
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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:N/A:H",
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"baseScore": 7.7,
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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 truncated AML that acpi_ps_get_next_namestring() and acpi_ps_peek_opcode() over-read is the platform DSDT/SSDT stream parsed by acpi_ns_execute_table() from acpi_load_tables() in acpi_bus_init(); those bytes come from local firmware tables, not from a network protocol message.\nAC:L - A DSDT/SSDT whose namestring (AML_MULTI_NAME_PREFIX count or a run of '\\'/'^' prefixes) or final opcode sits against the AML buffer end makes acpi_ps_get_next_namestring() and acpi_ps_peek_opcode() read past parser_state->aml_end on every acpi_load_tables() parse; the table author sets those bytes and no race is required.\nPR:N - acpi_bus_init() calls acpi_load_tables() → acpi_tb_load_namespace() → acpi_ns_load_table() → acpi_ns_execute_table() at boot with no capability check, so the OOB in acpi_ps_get_next_namestring()/acpi_ps_peek_opcode() fires on firmware AML before any user account exists.\nUI:N - acpi_load_tables() parses the DSDT/SSDT automatically during acpi_bus_init() at boot; the victim does not need to mount media, open a file, or otherwise interact.\nS:U - acpi_ns_lookup()'s ACPI_MOVE_32_TO_32 of an over-long nameseg and acpi_ps_peek_opcode()'s ACPI_GET8 over-read kernel memory adjacent to the mapped AML buffer inside the host kernel; this is not a VM escape or IOMMU bypass.\nC:H - acpi_ps_get_next_namestring() does not cap '\\'/'^' prefix walking or the AML_MULTI_NAME_PREFIX count byte, then acpi_ns_lookup() copies up to 255 four-byte namesegs via ACPI_MOVE_32_TO_32 past aml_end, so the out-of-bounds read is not limited to a few bytes.\nI:N - The demonstrated faults are heap-buffer-overflow reads (4 bytes in acpi_ns_lookup, 1–2 bytes in acpi_ps_peek_opcode); the patched functions only advance parser_state->aml and return a namestring pointer or opcode, and do not write past the AML buffer.\nA:H - The same over-read past the AML allocation in acpi_ns_lookup()/acpi_ps_peek_opcode() during acpi_load_tables() can touch unmapped memory and oops or panic the kernel at boot."
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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/acpi/acpica/psargs.c",
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"drivers/acpi/acpica/psparse.c"
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],
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"versions": [
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "3a8c1efc0fd3abb2d2b1254315f36db03abc88eb",
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"status": "affected",
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"versionType": "git"
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},
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "c917df56b73719a2d4cee1c4ab4a6626acb95315",
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"status": "affected",
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "4f03d84c95a51436878cd750a14f8ca37eeb3112",
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"status": "affected",
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"versionType": "git"
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},
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "38ee32a9ace6fae8965f059b38e6e7fb27b1e7ce",
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"status": "affected",
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"lessThan": "253d7272d01db9529c79b95205c0f859ef9f4f23",
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"status": "affected",
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"versionType": "git"
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "4de2cffef5e6b5b79eec8c934df582459b818228",
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"status": "affected",
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "bdc35754012906dbf094be104b103ca3adfef6f7",
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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/acpi/acpica/psargs.c",
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"drivers/acpi/acpica/psparse.c"
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],
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"versions": [
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{
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"version": "2.6.12",
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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": "2.6.12",
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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": "5.10.271",
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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": "5.15.222",
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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": "6.1.189",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.158",
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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": "6.12.111",
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"lessThanOrEqual": "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": "6.18.53",
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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": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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"url": "https://git.kernel.org/stable/c/4f03d84c95a51436878cd750a14f8ca37eeb3112"
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{
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"url": "https://git.kernel.org/stable/c/38ee32a9ace6fae8965f059b38e6e7fb27b1e7ce"
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},
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{
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"url": "https://git.kernel.org/stable/c/253d7272d01db9529c79b95205c0f859ef9f4f23"
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{
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"url": "https://git.kernel.org/stable/c/4de2cffef5e6b5b79eec8c934df582459b818228"
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{
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"url": "https://git.kernel.org/stable/c/bdc35754012906dbf094be104b103ca3adfef6f7"
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}
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],
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"title": "ACPICA: add boundary checks in two places",
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