{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-37913","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T04:51:23.967Z","datePublished":"2025-05-20T15:21:44.793Z","dateUpdated":"2026-05-11T21:17:31.826Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:17:31.826Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: qfq: Fix double list add in class with netem as child qdisc\n\nAs described in Gerrard's report [1], there are use cases where a netem\nchild qdisc will make the parent qdisc's enqueue callback reentrant.\nIn the case of qfq, there won't be a UAF, but the code will add the same\nclassifier to the list twice, which will cause memory corruption.\n\nThis patch checks whether the class was already added to the agg->active\nlist (cl_is_active) before doing the addition to cater for the reentrant\ncase.\n\n[1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/"}],"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":"37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea","lessThan":"041f410aec2c1751ee22b8b73ba05d38c3a6a602","status":"affected","versionType":"git"},{"version":"37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea","lessThan":"005a479540478a820c52de098e5e767e63e36f0a","status":"affected","versionType":"git"},{"version":"37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea","lessThan":"0bf32d6fb1fcbf841bb9945570e0e2a70072c00f","status":"affected","versionType":"git"},{"version":"37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea","lessThan":"0aa23e0856b7cedb3c88d8e3d281c212c7e4fbeb","status":"affected","versionType":"git"},{"version":"37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea","lessThan":"a43783119e01849fbf2fe8855634e8989b240cb4","status":"affected","versionType":"git"},{"version":"37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea","lessThan":"53bc0b55178bd59bdd4bcd16349505cabf54b1a2","status":"affected","versionType":"git"},{"version":"37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea","lessThan":"370218e8ce711684acc4cdd3cc3c6dd7956bc165","status":"affected","versionType":"git"},{"version":"37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea","lessThan":"f139f37dcdf34b67f5bf92bc8e0f7f6b3ac63aa4","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":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","status":"unaffected","versionType":"semver"},{"version":"5.4.294","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.238","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.182","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.138","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.90","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.28","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.14.6","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":"5.0","versionEndExcluding":"5.4.294"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.10.238"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.15.182"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.1.138"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.6.90"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.12.28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.14.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.15"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/041f410aec2c1751ee22b8b73ba05d38c3a6a602"},{"url":"https://git.kernel.org/stable/c/005a479540478a820c52de098e5e767e63e36f0a"},{"url":"https://git.kernel.org/stable/c/0bf32d6fb1fcbf841bb9945570e0e2a70072c00f"},{"url":"https://git.kernel.org/stable/c/0aa23e0856b7cedb3c88d8e3d281c212c7e4fbeb"},{"url":"https://git.kernel.org/stable/c/a43783119e01849fbf2fe8855634e8989b240cb4"},{"url":"https://git.kernel.org/stable/c/53bc0b55178bd59bdd4bcd16349505cabf54b1a2"},{"url":"https://git.kernel.org/stable/c/370218e8ce711684acc4cdd3cc3c6dd7956bc165"},{"url":"https://git.kernel.org/stable/c/f139f37dcdf34b67f5bf92bc8e0f7f6b3ac63aa4"}],"title":"net_sched: qfq: Fix double list add in class with netem as child qdisc","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T19:57:15.106Z"}}]}}