206 lines
9.8 KiB
JSON
206 lines
9.8 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-2026-74740",
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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": "2026-08-15T05:44:03.930Z",
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"datePublished": "2026-08-26T14:36:52.344Z",
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"dateUpdated": "2026-10-30T12:30:29.380Z"
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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": "2026-10-30T12:30:29.380Z"
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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\nnet/sched: act_api: fix TOCTOU NULL deref on a->goto_chain\n\ntcf_action_exec() handles TC_ACT_GOTO_CHAIN by first checking\nrcu_access_pointer(a->goto_chain) and then calling\ntcf_action_goto_chain_exec(), which does a second, independent\nrcu_dereference_bh(a->goto_chain) read and immediately dereferences\nchain->filter_chain. A concurrent tcf_action_set_ctrlact() (e.g. the gact\nreplace path) can clear a->goto_chain between the two reads, so the second\nread returns NULL and tcf_action_goto_chain_exec() dereferences NULL.\n\nFix the race by doing a single rcu_dereference_bh() read of a->goto_chain\nin tcf_action_exec(), checking it once for NULL, and passing the resulting\nchain pointer into tcf_action_goto_chain_exec(). This turns the split\ncheck/use into a single check/use on one value."
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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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"net/sched/act_api.c"
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],
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"versions": [
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{
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"version": "ee3bbfe806cdb46b02cda63626cb50a7a7b19fc5",
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"lessThan": "28aa0c9dd0b1b38436995d4c15621ad3f896c7e3",
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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": "ee3bbfe806cdb46b02cda63626cb50a7a7b19fc5",
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"lessThan": "91d55fd1fdb85c8371ca8793c788ea7d5192383a",
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"status": "affected",
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},
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"lessThan": "1ec48b6715c29b20105e3485206602cff6c51ae5",
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"status": "affected",
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"versionType": "git"
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{
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"version": "ee3bbfe806cdb46b02cda63626cb50a7a7b19fc5",
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"lessThan": "abceabc4408fca6a9dd52611f5d197dec9390d63",
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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": "ee3bbfe806cdb46b02cda63626cb50a7a7b19fc5",
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"lessThan": "6b70886ebc428eed43a069c8944a931b5fb3f4e4",
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"status": "affected",
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},
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{
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"version": "ee3bbfe806cdb46b02cda63626cb50a7a7b19fc5",
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"lessThan": "f60b396ee174206fe08ebf997d16cd3801b77b22",
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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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"net/sched/act_api.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": "6.1.191",
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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": "6.6.153",
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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": "6.12.105",
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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": "6.18.46",
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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": "7.1.10",
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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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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.1",
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"versionEndExcluding": "6.1.191"
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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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}
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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/28aa0c9dd0b1b38436995d4c15621ad3f896c7e3"
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},
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{
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"url": "https://git.kernel.org/stable/c/91d55fd1fdb85c8371ca8793c788ea7d5192383a"
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},
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{
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"url": "https://git.kernel.org/stable/c/1ec48b6715c29b20105e3485206602cff6c51ae5"
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},
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{
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"url": "https://git.kernel.org/stable/c/abceabc4408fca6a9dd52611f5d197dec9390d63"
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},
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{
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"url": "https://git.kernel.org/stable/c/6b70886ebc428eed43a069c8944a931b5fb3f4e4"
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},
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{
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"url": "https://git.kernel.org/stable/c/f60b396ee174206fe08ebf997d16cd3801b77b22"
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}
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],
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"title": "net/sched: act_api: fix TOCTOU NULL deref on a->goto_chain",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |