{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52984", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.376Z", "datePublished": "2026-06-24T16:28:59.088Z", "dateUpdated": "2026-06-24T16:28:59.088Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:28:59.088Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: netem: fix queue limit check to include reordered packets\n\nThe queue limit check in netem_enqueue() uses q->t_len which only\ncounts packets in the internal tfifo. Packets placed in sch->q by\nthe reorder path (__qdisc_enqueue_head) are not counted, allowing\nthe total queue occupancy to exceed sch->limit under reordering.\n\nInclude sch->q.qlen in the limit check."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/sch_netem.c"], "versions": [{"version": "216509dda290f6db92c816dd54b83c1df9da9e76", "lessThan": "0f875d52db4c921da610e481b72f03cc82fdcb72", "status": "affected", "versionType": "git"}, {"version": "c2047b0e216c8edce227d7c42f99ac2877dad0e4", "lessThan": "ef9a41b3870fb90577da5b2de5bd140022d4021e", "status": "affected", "versionType": "git"}, {"version": "10df49cfca73dfbbdb6c4150d859f7e8926ae427", "lessThan": "74fcd8e127200a50ee22ba2b45c164722bdb9177", "status": "affected", "versionType": "git"}, {"version": "3824c5fad18eeb7abe0c4fc966f29959552dca3e", "lessThan": "39a66e83ea41fe845631eeb8d326953de27d13f9", "status": "affected", "versionType": "git"}, {"version": "356078a5c55ec8d2061fcc009fb8599f5b0527f9", "lessThan": "54b5dbacd00dedffd5e2eed76de1c3839996b5e6", "status": "affected", "versionType": "git"}, {"version": "f8d4bc455047cf3903cd6f85f49978987dbb3027", "lessThan": "8450462eaf91d5d2a9e863507b16d18e814baef3", "status": "affected", "versionType": "git"}, {"version": "f8d4bc455047cf3903cd6f85f49978987dbb3027", "lessThan": "936a7dd87251f6f3e88983350833edf60fe6a80b", "status": "affected", "versionType": "git"}, {"version": "f8d4bc455047cf3903cd6f85f49978987dbb3027", "lessThan": "4185701fcce6b426b6c3630b25330dddd9c47b0d", "status": "affected", "versionType": "git"}, {"version": "83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31", "status": "affected", "versionType": "git"}, {"version": "5.10.232", "lessThan": "5.10.258", "status": "affected", "versionType": "semver"}, {"version": "5.15.175", "lessThan": "5.15.209", "status": "affected", "versionType": "semver"}, {"version": "6.1.121", "lessThan": "6.1.175", "status": "affected", "versionType": "semver"}, {"version": "6.6.67", "lessThan": "6.6.141", "status": "affected", "versionType": "semver"}, {"version": "6.12.6", "lessThan": "6.12.91", "status": "affected", "versionType": "semver"}, {"version": "5.4.288", "lessThan": "5.5", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/sch_netem.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "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": "5.10.232", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.175", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.121", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.67", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.6", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.288"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72"}, {"url": "https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e"}, {"url": "https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177"}, {"url": "https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9"}, {"url": "https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6"}, {"url": "https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3"}, {"url": "https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b"}, {"url": "https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d"}], "title": "net/sched: netem: fix queue limit check to include reordered packets", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{}

{"bugzilla": {"description": "kernel: net/sched: netem: fix queue limit check to include reordered packets", "id": "2492302", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492302"}, "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"}, "cwe": "CWE-770", "details": ["A flaw was found in the Linux kernel's networking scheduler (netem). The queue limit check in the `netem_enqueue()` function does not properly account for reordered packets, allowing the total queue occupancy to exceed its configured limit. This oversight can lead to a Denial of Service (DoS) condition, where network traffic processing is disrupted due to an overloaded queue."], "name": "CVE-2026-52984", "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": "Out of support scope", "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": "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": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-52984\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-52984\nhttps://lore.kernel.org/linux-cve-announce/2026062442-CVE-2026-52984-110c@gregkh/T"], "threat_severity": "Low"}