{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-37992", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.976Z", "datePublished": "2025-05-26T14:54:15.796Z", "dateUpdated": "2025-06-04T12:57:41.538Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-06-04T12:57:41.538Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: Flush gso_skb list too during ->change()\n\nPreviously, when reducing a qdisc's limit via the ->change() operation, only\nthe main skb queue was trimmed, potentially leaving packets in the gso_skb\nlist. This could result in NULL pointer dereference when we only check\nsch->limit against sch->q.qlen.\n\nThis patch introduces a new helper, qdisc_dequeue_internal(), which ensures\nboth the gso_skb list and the main queue are properly flushed when trimming\nexcess packets. All relevant qdiscs (codel, fq, fq_codel, fq_pie, hhf, pie)\nare updated to use this helper in their ->change() routines."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/net/sch_generic.h", "net/sched/sch_codel.c", "net/sched/sch_fq.c", "net/sched/sch_fq_codel.c", "net/sched/sch_fq_pie.c", "net/sched/sch_hhf.c", "net/sched/sch_pie.c"], "versions": [{"version": "76e3cc126bb223013a6b9a0e2a51238d1ef2e409", "lessThan": "ea1132ccb112f51ba749c56a912f67970c2cd542", "status": "affected", "versionType": "git"}, {"version": "76e3cc126bb223013a6b9a0e2a51238d1ef2e409", "lessThan": "d3336f746f196c6a53e0480923ae93939f047b6c", "status": "affected", "versionType": "git"}, {"version": "76e3cc126bb223013a6b9a0e2a51238d1ef2e409", "lessThan": "d38939ebe0d992d581acb6885c1723fa83c1fb2c", "status": "affected", "versionType": "git"}, {"version": "76e3cc126bb223013a6b9a0e2a51238d1ef2e409", "lessThan": "a7d6e0ac0a8861f6b1027488062251a8e28150fd", "status": "affected", "versionType": "git"}, {"version": "76e3cc126bb223013a6b9a0e2a51238d1ef2e409", "lessThan": "d1365ca80b012d8a7863e45949e413fb61fa4861", "status": "affected", "versionType": "git"}, {"version": "76e3cc126bb223013a6b9a0e2a51238d1ef2e409", "lessThan": "fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76", "status": "affected", "versionType": "git"}, {"version": "76e3cc126bb223013a6b9a0e2a51238d1ef2e409", "lessThan": "2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/net/sch_generic.h", "net/sched/sch_codel.c", "net/sched/sch_fq.c", "net/sched/sch_fq_codel.c", "net/sched/sch_fq_pie.c", "net/sched/sch_hhf.c", "net/sched/sch_pie.c"], "versions": [{"version": "3.5", "status": "affected"}, {"version": "0", "lessThan": "3.5", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.238", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.184", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.140", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.92", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.30", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.8", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15", "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": "3.5", "versionEndExcluding": "5.10.238"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "5.15.184"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.1.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.6.92"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.12.30"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.14.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ea1132ccb112f51ba749c56a912f67970c2cd542"}, {"url": "https://git.kernel.org/stable/c/d3336f746f196c6a53e0480923ae93939f047b6c"}, {"url": "https://git.kernel.org/stable/c/d38939ebe0d992d581acb6885c1723fa83c1fb2c"}, {"url": "https://git.kernel.org/stable/c/a7d6e0ac0a8861f6b1027488062251a8e28150fd"}, {"url": "https://git.kernel.org/stable/c/d1365ca80b012d8a7863e45949e413fb61fa4861"}, {"url": "https://git.kernel.org/stable/c/fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76"}, {"url": "https://git.kernel.org/stable/c/2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8"}], "title": "net_sched: Flush gso_skb list too during ->change()", "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: Flush gso_skb list too during ->change()\n\nPreviously, when reducing a qdisc's limit via the ->change() operation, only\nthe main skb queue was trimmed, potentially leaving packets in the gso_skb\nlist. This could result in NULL pointer dereference when we only check\nsch->limit against sch->q.qlen.\n\nThis patch introduces a new helper, qdisc_dequeue_internal(), which ensures\nboth the gso_skb list and the main queue are properly flushed when trimming\nexcess packets. All relevant qdiscs (codel, fq, fq_codel, fq_pie, hhf, pie)\nare updated to use this helper in their ->change() routines."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net_sched: Vaciar tambi\u00e9n la lista gso_skb durante ->change(). Anteriormente, al reducir el l\u00edmite de una qdisc mediante la operaci\u00f3n ->change(), solo se recortaba la cola principal de skb, lo que pod\u00eda dejar paquetes en la lista gso_skb. Esto pod\u00eda provocar una desreferencia de puntero nulo al comparar \u00fanicamente sch->limit con sch->q.qlen. Este parche introduce un nuevo asistente, qdisc_dequeue_internal(), que garantiza que tanto la lista gso_skb como la cola principal se vac\u00eden correctamente al recortar los paquetes sobrantes. Todas las qdisc relevantes (codel, fq, fq_codel, fq_pie, hhf, pie) se han actualizado para usar este asistente en sus rutinas ->change()."}], "id": "CVE-2025-37992", "lastModified": "2025-06-04T13:15:28.170", "metrics": {}, "published": "2025-05-26T15:15:19.770", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a7d6e0ac0a8861f6b1027488062251a8e28150fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1365ca80b012d8a7863e45949e413fb61fa4861"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d3336f746f196c6a53e0480923ae93939f047b6c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d38939ebe0d992d581acb6885c1723fa83c1fb2c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ea1132ccb112f51ba749c56a912f67970c2cd542"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: net_sched: Flush gso_skb list too during ->change()", "id": "2368609", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2368609"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet_sched: Flush gso_skb list too during ->change()\nPreviously, when reducing a qdisc's limit via the ->change() operation, only\nthe main skb queue was trimmed, potentially leaving packets in the gso_skb\nlist. This could result in NULL pointer dereference when we only check\nsch->limit against sch->q.qlen.\nThis patch introduces a new helper, qdisc_dequeue_internal(), which ensures\nboth the gso_skb list and the main queue are properly flushed when trimming\nexcess packets. All relevant qdiscs (codel, fq, fq_codel, fq_pie, hhf, pie)\nare updated to use this helper in their ->change() routines."], "name": "CVE-2025-37992", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-37992\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-37992\nhttps://lore.kernel.org/linux-cve-announce/2025052618-CVE-2025-37992-1590@gregkh/T"], "threat_severity": "Moderate"}