{"id":"CVE-2026-52984","state":"PUBLISHED","title":"net/sched: netem: fix queue limit check to include reordered packets","description":"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.","publishedAt":"2026-06-24T16:28:59.088Z","updatedAt":"2026-06-24T16:28:59.088Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"216509dda290f6db92c816dd54b83c1df9da9e76","status":"affected","lessThan":"0f875d52db4c921da610e481b72f03cc82fdcb72","versionType":"git"},{"version":"c2047b0e216c8edce227d7c42f99ac2877dad0e4","status":"affected","lessThan":"ef9a41b3870fb90577da5b2de5bd140022d4021e","versionType":"git"},{"version":"10df49cfca73dfbbdb6c4150d859f7e8926ae427","status":"affected","lessThan":"74fcd8e127200a50ee22ba2b45c164722bdb9177","versionType":"git"},{"version":"3824c5fad18eeb7abe0c4fc966f29959552dca3e","status":"affected","lessThan":"39a66e83ea41fe845631eeb8d326953de27d13f9","versionType":"git"},{"version":"356078a5c55ec8d2061fcc009fb8599f5b0527f9","status":"affected","lessThan":"54b5dbacd00dedffd5e2eed76de1c3839996b5e6","versionType":"git"},{"version":"f8d4bc455047cf3903cd6f85f49978987dbb3027","status":"affected","lessThan":"8450462eaf91d5d2a9e863507b16d18e814baef3","versionType":"git"},{"version":"f8d4bc455047cf3903cd6f85f49978987dbb3027","status":"affected","lessThan":"936a7dd87251f6f3e88983350833edf60fe6a80b","versionType":"git"},{"version":"f8d4bc455047cf3903cd6f85f49978987dbb3027","status":"affected","lessThan":"4185701fcce6b426b6c3630b25330dddd9c47b0d","versionType":"git"},{"version":"83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31","status":"affected","versionType":"git"},{"version":"5.10.232","status":"affected","lessThan":"5.10.258","versionType":"semver"},{"version":"5.15.175","status":"affected","lessThan":"5.15.209","versionType":"semver"},{"version":"6.1.121","status":"affected","lessThan":"6.1.175","versionType":"semver"},{"version":"6.6.67","status":"affected","lessThan":"6.6.141","versionType":"semver"},{"version":"6.12.6","status":"affected","lessThan":"6.12.91","versionType":"semver"},{"version":"5.4.288","status":"affected","lessThan":"5.5","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/sch_netem.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/sch_netem.c"]}],"references":["https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72","https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e","https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177","https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9","https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6","https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3","https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b","https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/52xxx/CVE-2026-52984.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52984","state":"PUBLISHED","datePublished":"2026-06-24T16:28:59.088Z","dateUpdated":"2026-06-24T16:28:59.088Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.376Z"},"containers":{"cna":{"title":"net/sched: netem: fix queue limit check to include reordered packets","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"216509dda290f6db92c816dd54b83c1df9da9e76","status":"affected","lessThan":"0f875d52db4c921da610e481b72f03cc82fdcb72","versionType":"git"},{"version":"c2047b0e216c8edce227d7c42f99ac2877dad0e4","status":"affected","lessThan":"ef9a41b3870fb90577da5b2de5bd140022d4021e","versionType":"git"},{"version":"10df49cfca73dfbbdb6c4150d859f7e8926ae427","status":"affected","lessThan":"74fcd8e127200a50ee22ba2b45c164722bdb9177","versionType":"git"},{"version":"3824c5fad18eeb7abe0c4fc966f29959552dca3e","status":"affected","lessThan":"39a66e83ea41fe845631eeb8d326953de27d13f9","versionType":"git"},{"version":"356078a5c55ec8d2061fcc009fb8599f5b0527f9","status":"affected","lessThan":"54b5dbacd00dedffd5e2eed76de1c3839996b5e6","versionType":"git"},{"version":"f8d4bc455047cf3903cd6f85f49978987dbb3027","status":"affected","lessThan":"8450462eaf91d5d2a9e863507b16d18e814baef3","versionType":"git"},{"version":"f8d4bc455047cf3903cd6f85f49978987dbb3027","status":"affected","lessThan":"936a7dd87251f6f3e88983350833edf60fe6a80b","versionType":"git"},{"version":"f8d4bc455047cf3903cd6f85f49978987dbb3027","status":"affected","lessThan":"4185701fcce6b426b6c3630b25330dddd9c47b0d","versionType":"git"},{"version":"83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31","status":"affected","versionType":"git"},{"version":"5.10.232","status":"affected","lessThan":"5.10.258","versionType":"semver"},{"version":"5.15.175","status":"affected","lessThan":"5.15.209","versionType":"semver"},{"version":"6.1.121","status":"affected","lessThan":"6.1.175","versionType":"semver"},{"version":"6.6.67","status":"affected","lessThan":"6.6.141","versionType":"semver"},{"version":"6.12.6","status":"affected","lessThan":"6.12.91","versionType":"semver"},{"version":"5.4.288","status":"affected","lessThan":"5.5","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/sch_netem.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/sch_netem.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-24T16:28:59.088Z"},"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"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