{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-38477", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.021Z", "datePublished": "2025-07-28T11:21:38.319Z", "dateUpdated": "2025-07-28T11:21:38.319Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-07-28T11:21:38.319Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_qfq: Fix race condition on qfq_aggregate\n\nA race condition can occur when 'agg' is modified in qfq_change_agg\n(called during qfq_enqueue) while other threads access it\nconcurrently. For example, qfq_dump_class may trigger a NULL\ndereference, and qfq_delete_class may cause a use-after-free.\n\nThis patch addresses the issue by:\n\n1. Moved qfq_destroy_class into the critical section.\n\n2. Added sch_tree_lock protection to qfq_dump_class and\nqfq_dump_class_stats."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/sch_qfq.c"], "versions": [{"version": "462dbc9101acd38e92eda93c0726857517a24bbd", "lessThan": "466e10194ab81caa2ee6a332d33ba16bcceeeba6", "status": "affected", "versionType": "git"}, {"version": "462dbc9101acd38e92eda93c0726857517a24bbd", "lessThan": "fbe48f06e64134dfeafa89ad23387f66ebca3527", "status": "affected", "versionType": "git"}, {"version": "462dbc9101acd38e92eda93c0726857517a24bbd", "lessThan": "a6d735100f602c830c16d69fb6d780eebd8c9ae1", "status": "affected", "versionType": "git"}, {"version": "462dbc9101acd38e92eda93c0726857517a24bbd", "lessThan": "c000a3a330d97f6c073ace5aa5faf94b9adb4b79", "status": "affected", "versionType": "git"}, {"version": "462dbc9101acd38e92eda93c0726857517a24bbd", "lessThan": "5e28d5a3f774f118896aec17a3a20a9c5c9dfc64", "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_qfq.c"], "versions": [{"version": "3.8", "status": "affected"}, {"version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.147", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.100", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.40", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.8", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16", "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": "3.8", "versionEndExcluding": "6.1.147"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.6.100"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.12.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.15.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/466e10194ab81caa2ee6a332d33ba16bcceeeba6"}, {"url": "https://git.kernel.org/stable/c/fbe48f06e64134dfeafa89ad23387f66ebca3527"}, {"url": "https://git.kernel.org/stable/c/a6d735100f602c830c16d69fb6d780eebd8c9ae1"}, {"url": "https://git.kernel.org/stable/c/c000a3a330d97f6c073ace5aa5faf94b9adb4b79"}, {"url": "https://git.kernel.org/stable/c/5e28d5a3f774f118896aec17a3a20a9c5c9dfc64"}], "title": "net/sched: sch_qfq: Fix race condition on qfq_aggregate", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_qfq: Fix race condition on qfq_aggregate\n\nA race condition can occur when 'agg' is modified in qfq_change_agg\n(called during qfq_enqueue) while other threads access it\nconcurrently. For example, qfq_dump_class may trigger a NULL\ndereference, and qfq_delete_class may cause a use-after-free.\n\nThis patch addresses the issue by:\n\n1. Moved qfq_destroy_class into the critical section.\n\n2. Added sch_tree_lock protection to qfq_dump_class and\nqfq_dump_class_stats."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/sched: sch_qfq: Correcci\u00f3n de la condici\u00f3n de ejecuci\u00f3n en qfq_aggregate. Una condici\u00f3n de ejecuci\u00f3n puede ocurrir cuando se modifica 'agg' en qfq_change_agg (llamado durante qfq_enqueue) mientras otros subprocesos acceden a \u00e9l simult\u00e1neamente. Por ejemplo, qfq_dump_class puede desencadenar una desreferencia a NULL y qfq_delete_class puede causar un use-after-free. Este parche soluciona el problema mediante: 1. El traslado de qfq_destroy_class a la secci\u00f3n cr\u00edtica. 2. La adici\u00f3n de la protecci\u00f3n sch_tree_lock a qfq_dump_class y qfq_dump_class_stats."}], "id": "CVE-2025-38477", "lastModified": "2025-07-29T14:14:29.590", "metrics": {}, "published": "2025-07-28T12:15:29.617", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/466e10194ab81caa2ee6a332d33ba16bcceeeba6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e28d5a3f774f118896aec17a3a20a9c5c9dfc64"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a6d735100f602c830c16d69fb6d780eebd8c9ae1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c000a3a330d97f6c073ace5aa5faf94b9adb4b79"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fbe48f06e64134dfeafa89ad23387f66ebca3527"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: net/sched: sch_qfq: Fix race condition on qfq_aggregate", "id": "2383922", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2383922"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-38477", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-07-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38477\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38477\nhttps://lore.kernel.org/linux-cve-announce/2025072813-CVE-2025-38477-8b42@gregkh/T"], "threat_severity": "Important"}