{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53011", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.378Z", "datePublished": "2026-06-24T16:29:22.082Z", "dateUpdated": "2026-06-28T06:38:02.986Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-28T06:38:02.986Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: taprio: fix use-after-free in advance_sched() on schedule switch\n\nIn advance_sched(), when should_change_schedules() returns true,\nswitch_schedules() is called to promote the admin schedule to oper.\nswitch_schedules() queues the old oper schedule for RCU freeing via\ncall_rcu(), but 'next' still points into an entry of the old oper\nschedule. The subsequent 'next->end_time = end_time' and\nrcu_assign_pointer(q->current_entry, next) are use-after-free.\n\nFix this by selecting 'next' from the new oper schedule immediately\nafter switch_schedules(), and using its pre-calculated end_time.\nsetup_first_end_time() sets the first entry's end_time to\nbase_time + interval when the schedule is installed, so the value\nis already correct.\n\nThe deleted 'end_time = sched_base_time(admin)' assignment was also\nharmful independently: it would overwrite the new first entry's\npre-calculated end_time with just base_time."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/sch_taprio.c"], "versions": [{"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213", "lessThan": "a8fc396519ef4f081bc545e88f61241728bb78d7", "status": "affected", "versionType": "git"}, {"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213", "lessThan": "3471874578160a28c171a607fa069f24062634b8", "status": "affected", "versionType": "git"}, {"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213", "lessThan": "7256996e1ef553716817f3bfd077c2f3b48b582f", "status": "affected", "versionType": "git"}, {"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213", "lessThan": "eee072fe16c646190d33ae69c9983d8de1562bf8", "status": "affected", "versionType": "git"}, {"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213", "lessThan": "1bd286fa3e21200133478ed523cc6a2788baf38a", "status": "affected", "versionType": "git"}, {"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213", "lessThan": "b73235da5dde77ed1264f9767b62c28c9d71fd78", "status": "affected", "versionType": "git"}, {"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213", "lessThan": "0e62171df8ed4804d00db088f17eed06468233fa", "status": "affected", "versionType": "git"}, {"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213", "lessThan": "105425b1969c5affe532713cfac1c0b320d7ac2b", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/sch_taprio.c"], "versions": [{"version": "5.2", "status": "affected"}, {"version": "0", "lessThan": "5.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": 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"https://git.kernel.org/stable/c/eee072fe16c646190d33ae69c9983d8de1562bf8"}, {"url": "https://git.kernel.org/stable/c/1bd286fa3e21200133478ed523cc6a2788baf38a"}, {"url": "https://git.kernel.org/stable/c/b73235da5dde77ed1264f9767b62c28c9d71fd78"}, {"url": "https://git.kernel.org/stable/c/0e62171df8ed4804d00db088f17eed06468233fa"}, {"url": "https://git.kernel.org/stable/c/105425b1969c5affe532713cfac1c0b320d7ac2b"}], "title": "net/sched: taprio: fix use-after-free in advance_sched() on schedule switch", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{}

{"bugzilla": {"description": "kernel: net/sched: taprio: fix use-after-free in advance_sched() on schedule switch", "id": "2492286", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492286"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's networking scheduler, specifically within the `taprio` module. When the system attempts to switch schedules, a use-after-free vulnerability occurs in the `advance_sched()` function. This happens because a pointer to an old schedule entry is still used after the memory for that entry has been queued for release. An attacker could potentially exploit this memory corruption to cause a denial of service or achieve arbitrary code execution."], "name": "CVE-2026-53011", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53011\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53011\nhttps://lore.kernel.org/linux-cve-announce/2026062449-CVE-2026-53011-6b0a@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a3d43c0d56f1b94e74963a2fbadfb70126d92213,a8fc396519ef4f081bc545e88f61241728bb78d7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a3d43c0d56f1b94e74963a2fbadfb70126d92213,3471874578160a28c171a607fa069f24062634b8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a3d43c0d56f1b94e74963a2fbadfb70126d92213,7256996e1ef553716817f3bfd077c2f3b48b582f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a3d43c0d56f1b94e74963a2fbadfb70126d92213,eee072fe16c646190d33ae69c9983d8de1562bf8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a3d43c0d56f1b94e74963a2fbadfb70126d92213,1bd286fa3e21200133478ed523cc6a2788baf38a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a3d43c0d56f1b94e74963a2fbadfb70126d92213,b73235da5dde77ed1264f9767b62c28c9d71fd78)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a3d43c0d56f1b94e74963a2fbadfb70126d92213,0e62171df8ed4804d00db088f17eed06468233fa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a3d43c0d56f1b94e74963a2fbadfb70126d92213,105425b1969c5affe532713cfac1c0b320d7ac2b)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.258,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.209,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.175,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.141,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.91,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.33,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0.10,7.0.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-24T19:15:15.570262+00:00", "updated": "2026-06-28T13:45:06.274563+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}