217 lines
10 KiB
JSON
217 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-2026-90220",
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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": "2026-09-11T19:38:34.793Z",
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"datePublished": "2026-09-17T16:07:31.423Z",
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"dateUpdated": "2026-10-30T12:34:49.721Z"
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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": "2026-10-30T12:34:49.721Z"
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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\nALSA: seq: Don't leak the extension cell pointer in the bounce payload\n\nThe bounce_error_event() embeds the failed event in the bounce payload\nby pointing data.ext.ptr at it. When that event is a queued\nvariable-length event, its own data.ext.ptr holds the address of its\nfirst extension cell, put there by snd_seq_event_dup(). The payload\ngoes out verbatim through snd_seq_expand_var_event(), so the address\nreaches userspace.\n\nThat is the same address commit 705dd6dcbc0e (\"ALSA: seq: Clear\nvariable event pointer on read\") removed from the event header. The\nread path still clears it there, just above the call that expands the\npayload.\n\nEmbed a sanitised copy instead, treated exactly as snd_seq_read()\ntreats the header. A stack copy is enough because delivery is\nsynchronous and snd_seq_event_dup() copies before returning.\n\nAn unprivileged client reaches this by setting SNDRV_SEQ_FILTER_BOUNCE,\nqueueing a variable-length event to a port that does not exist and\nreading the bounce back. Eight bytes on 64-bit, from its own pool."
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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/core/seq/seq_clientmgr.c"
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],
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"versions": [
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{
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"version": "05e2358fec8812c37516ccea63bc4b9956d864ba",
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"lessThan": "c92b2e6e418a3885758438dddcead6e954a9e095",
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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": "93d260ce43a81df579c98bee92b91316df9c1c57",
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"lessThan": "42c3f856d13a91a0d4c302a0c6854813621136db",
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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": "dae23c545eb5a2be3b27a82fd0f611894fb8ab69",
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"lessThan": "b1e8d40663997aacaa198f37ce6893e07aaba77a",
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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": "efc86691e4d8083d9e380ea95042c2cf679f65fd",
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"lessThan": "6e6e471eef1d5d8cb056c7d364023fe048249204",
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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": "efc86691e4d8083d9e380ea95042c2cf679f65fd",
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"lessThan": "59e1592d3c270ff4642d5d6dc55c545306eb0693",
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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": "eae296065ede41a24040e6a7c909ec970f78b4eb",
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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": "0527a56cb327021cb73167cfddf0e49efa043500",
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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": "6.12.97",
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"lessThan": "6.12.110",
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"status": "affected",
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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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"lessThan": "6.18.52",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.6.160",
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"lessThan": "6.7",
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"status": "affected",
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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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"lessThan": "7.2",
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"status": "affected",
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"versionType": "semver"
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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/core/seq/seq_clientmgr.c"
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],
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"versions": [
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{
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"version": "7.2",
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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": "7.2",
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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": "6.12.110",
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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": "6.18.52",
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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": "7.2.6",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "6.12.97",
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"versionEndExcluding": "6.12.110"
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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": "6.18.40",
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"versionEndExcluding": "6.18.52"
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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": "7.2",
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"versionEndExcluding": "7.2.6"
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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": "7.2",
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"versionEndExcluding": "7.3"
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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": "6.6.160"
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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": "7.1.5"
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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/c92b2e6e418a3885758438dddcead6e954a9e095"
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},
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{
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"url": "https://git.kernel.org/stable/c/42c3f856d13a91a0d4c302a0c6854813621136db"
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},
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{
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"url": "https://git.kernel.org/stable/c/b1e8d40663997aacaa198f37ce6893e07aaba77a"
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},
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{
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"url": "https://git.kernel.org/stable/c/6e6e471eef1d5d8cb056c7d364023fe048249204"
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},
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{
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"url": "https://git.kernel.org/stable/c/59e1592d3c270ff4642d5d6dc55c545306eb0693"
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}
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],
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"title": "ALSA: seq: Don't leak the extension cell pointer in the bounce payload",
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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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} |