193 lines
10 KiB
JSON
193 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-2026-74333",
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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": "2026-08-15T05:44:03.885Z",
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"datePublished": "2026-08-15T05:58:25.781Z",
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"dateUpdated": "2026-10-16T18:55:33.681Z"
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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": "2026-08-17T05:46:00.787Z"
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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\nASoC: amd: acp-sdw-legacy: Bound DAI link iteration\n\ncreate_sdw_dailinks() walks soc_dais until it finds an entry with\ninitialised cleared, but soc_dais is allocated with exactly num_ends\nentries. If all entries are initialised, the loop reads past the end of\nthe array.\n\nThis was reported by KASAN:\n\n BUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach]\n Read of size 1\n\nPass the allocated entry count to create_sdw_dailinks() and stop before\nreading past the array."
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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 - The flaw is only reachable during local AMD ACP PCI/platform driver probe (snd_acp63_probe -> acp63_machine_register -> mc_probe); there is no network, Bluetooth, or userspace syscall/ioctl path to create_sdw_dailinks().\nAC:L - On affected AMD SoundWire legacy laptops, when every soc_dais slot is marked initialised the OOB read is deterministic at each boot/probe; KASAN already hit this in mc_probe on real hardware, so no attacker-controlled race or rare timing is required.\nPR:N - Exploitation needs no credentials: mc_probe runs automatically during pre-login kernel initialization when ACPI/PCI matches an amd_sdw machine table on built-in SoundWire hardware, before any authenticated user session exists.\nUI:N - No victim interaction is required beyond normal system boot on vulnerable AMD SoundWire hardware; the bug triggers during driver initialization, not from opening audio devices or mounting filesystems.\nS:U - Impact is confined to kernel heap corruption and crash/privilege escalation within the host kernel; this is not a VM escape, IOMMU bypass, or cross-security-authority boundary.\nC:H - The bug is a slab out-of-bounds read (KASAN: read of size 1) past the soc_dais array, which can disclose adjacent kernel heap objects and satisfies the guidance to rate out-of-bounds reads as High.\nI:H - After the OOB initialised check, the loop can treat adjacent slab memory as a valid asoc_sdw_dailink and call create_sdw_dailink(), corrupting list heads and allocation sizes and enabling further heap corruption or control-flow hijack.\nA:H - KASAN reported slab-out-of-bounds in mc_probe during audio card registration; continued iteration over corrupt structures can kernel oops/panic at boot, denying availability to all users on the machine."
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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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"sound/soc/amd/acp/acp-sdw-legacy-mach.c"
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],
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"versions": [
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{
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"version": "2981d9b0789c44b7375e7d599caf71bd843afc9e",
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"lessThan": "1279bdab5fa1f28c168e54215db506e87c6fac1e",
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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": "2981d9b0789c44b7375e7d599caf71bd843afc9e",
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"lessThan": "0230471eef5902207516851dcd47c559571dded2",
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"status": "affected",
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{
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"lessThan": "d49ecdf327cc91062d2f80996a163cf65fda1e60",
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"status": "affected",
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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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"sound/soc/amd/acp/acp-sdw-legacy-mach.c"
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],
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"versions": [
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{
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"version": "6.13",
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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": "6.13",
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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": "6.18.40",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "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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}
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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": "6.13",
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"versionEndExcluding": "6.18.40"
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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": "6.13",
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"versionEndExcluding": "7.1.5"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.13",
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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/1279bdab5fa1f28c168e54215db506e87c6fac1e"
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},
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{
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"url": "https://git.kernel.org/stable/c/0230471eef5902207516851dcd47c559571dded2"
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},
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{
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"url": "https://git.kernel.org/stable/c/d49ecdf327cc91062d2f80996a163cf65fda1e60"
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}
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],
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"title": "ASoC: amd: acp-sdw-legacy: Bound DAI link iteration",
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"x_generator": {
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"engine": "bippy-1.2.0"
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-74333",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T18:53:46.521950Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-16T18:55:33.681Z"
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}
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}
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]
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}
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} |