{"api_version":"1","generated_at":"2026-07-09T08:14:18+00:00","cve":"CVE-2026-53079","urls":{"html":"https://cve.report/CVE-2026-53079","api":"https://cve.report/api/cve/CVE-2026-53079.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53079","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53079"},"summary":{"title":"net_sched: fix skb memory leak in deferred qdisc drops","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: fix skb memory leak in deferred qdisc drops\n\nWhen the network stack cleans up the deferred list via qdisc_run_end(),\nit operates on the root qdisc. If the root qdisc do not implement the\nTCQ_F_DEQUEUE_DROPS flag the packets queue to free are never freed and\ngets stranded on the child's local to_free list.\n\nFix this by making qdisc_dequeue_drop() aware of the root qdisc. It\nfetches the root qdisc and check for the TCQ_F_DEQUEUE_DROPS flag. If\nthe flag is present, the packet is appended directly to the root's\nto_free list. Otherwise, drop it directly as it was done before the\noptimization was implemented.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:21","updated_at":"2026-06-24 17:17:21"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bf26ad92ffda7884825d67b46bd5efe615c3babf","name":"https://git.kernel.org/stable/c/bf26ad92ffda7884825d67b46bd5efe615c3babf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a6bd339dbb3514bce690fdcf252e788dfab4ee76","name":"https://git.kernel.org/stable/c/a6bd339dbb3514bce690fdcf252e788dfab4ee76","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53079","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53079","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a6efc273ab8245722eee2150fa12cf75781dc410 bf26ad92ffda7884825d67b46bd5efe615c3babf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a6efc273ab8245722eee2150fa12cf75781dc410 a6bd339dbb3514bce690fdcf252e788dfab4ee76 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.10 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"53079","cve":"CVE-2026-53079","epss":"0.001450000","percentile":"0.041020000","score_date":"2026-06-29","updated_at":"2026-06-30 00:06:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/sch_generic.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bf26ad92ffda7884825d67b46bd5efe615c3babf","status":"affected","version":"a6efc273ab8245722eee2150fa12cf75781dc410","versionType":"git"},{"lessThan":"a6bd339dbb3514bce690fdcf252e788dfab4ee76","status":"affected","version":"a6efc273ab8245722eee2150fa12cf75781dc410","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/sch_generic.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: fix skb memory leak in deferred qdisc drops\n\nWhen the network stack cleans up the deferred list via qdisc_run_end(),\nit operates on the root qdisc. If the root qdisc do not implement the\nTCQ_F_DEQUEUE_DROPS flag the packets queue to free are never freed and\ngets stranded on the child's local to_free list.\n\nFix this by making qdisc_dequeue_drop() aware of the root qdisc. It\nfetches the root qdisc and check for the TCQ_F_DEQUEUE_DROPS flag. If\nthe flag is present, the packet is appended directly to the root's\nto_free list. Otherwise, drop it directly as it was done before the\noptimization was implemented."}],"providerMetadata":{"dateUpdated":"2026-06-24T16:30:20.163Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/bf26ad92ffda7884825d67b46bd5efe615c3babf"},{"url":"https://git.kernel.org/stable/c/a6bd339dbb3514bce690fdcf252e788dfab4ee76"}],"title":"net_sched: fix skb memory leak in deferred qdisc drops","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53079","datePublished":"2026-06-24T16:30:20.163Z","dateReserved":"2026-06-09T07:44:35.383Z","dateUpdated":"2026-06-24T16:30:20.163Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:21","lastModifiedDate":"2026-06-24 17:17:21","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53079","Ordinal":"1","Title":"net_sched: fix skb memory leak in deferred qdisc drops","CVE":"CVE-2026-53079","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53079","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: fix skb memory leak in deferred qdisc drops\n\nWhen the network stack cleans up the deferred list via qdisc_run_end(),\nit operates on the root qdisc. If the root qdisc do not implement the\nTCQ_F_DEQUEUE_DROPS flag the packets queue to free are never freed and\ngets stranded on the child's local to_free list.\n\nFix this by making qdisc_dequeue_drop() aware of the root qdisc. It\nfetches the root qdisc and check for the TCQ_F_DEQUEUE_DROPS flag. If\nthe flag is present, the packet is appended directly to the root's\nto_free list. Otherwise, drop it directly as it was done before the\noptimization was implemented.","Type":"Description","Title":"net_sched: fix skb memory leak in deferred qdisc drops"}]}}}