{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38477","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T04:51:24.021Z","datePublished":"2025-07-28T11:21:38.319Z","dateUpdated":"2026-05-12T12:05:08.048Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:28:46.096Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_qfq: Fix race condition on qfq_aggregate\n\nA race condition can occur when 'agg' is modified in qfq_change_agg\n(called during qfq_enqueue) while other threads access it\nconcurrently. For example, qfq_dump_class may trigger a NULL\ndereference, and qfq_delete_class may cause a use-after-free.\n\nThis patch addresses the issue by:\n\n1. Moved qfq_destroy_class into the critical section.\n\n2. Added sch_tree_lock protection to qfq_dump_class and\nqfq_dump_class_stats."}],"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":"462dbc9101acd38e92eda93c0726857517a24bbd","lessThan":"aa7a22c4d678bf649fd3a1d27debec583563414d","status":"affected","versionType":"git"},{"version":"462dbc9101acd38e92eda93c0726857517a24bbd","lessThan":"d841aa5518508ab195b6781ad0d73ee378d713dd","status":"affected","versionType":"git"},{"version":"462dbc9101acd38e92eda93c0726857517a24bbd","lessThan":"c6df794000147a3a02f79984aada4ce83f8d0a1e","status":"affected","versionType":"git"},{"version":"462dbc9101acd38e92eda93c0726857517a24bbd","lessThan":"466e10194ab81caa2ee6a332d33ba16bcceeeba6","status":"affected","versionType":"git"},{"version":"462dbc9101acd38e92eda93c0726857517a24bbd","lessThan":"fbe48f06e64134dfeafa89ad23387f66ebca3527","status":"affected","versionType":"git"},{"version":"462dbc9101acd38e92eda93c0726857517a24bbd","lessThan":"a6d735100f602c830c16d69fb6d780eebd8c9ae1","status":"affected","versionType":"git"},{"version":"462dbc9101acd38e92eda93c0726857517a24bbd","lessThan":"c000a3a330d97f6c073ace5aa5faf94b9adb4b79","status":"affected","versionType":"git"},{"version":"462dbc9101acd38e92eda93c0726857517a24bbd","lessThan":"5e28d5a3f774f118896aec17a3a20a9c5c9dfc64","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":"3.8","status":"affected"},{"version":"0","lessThan":"3.8","status":"unaffected","versionType":"semver"},{"version":"5.4.297","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.241","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.190","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.147","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.100","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.40","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.15.8","lessThanOrEqual":"6.15.*","status":"unaffected","versionType":"semver"},{"version":"6.16","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":"3.8","versionEndExcluding":"5.4.297"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.10.241"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.15.190"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.1.147"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.6.100"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.12.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.15.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.16"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/aa7a22c4d678bf649fd3a1d27debec583563414d"},{"url":"https://git.kernel.org/stable/c/d841aa5518508ab195b6781ad0d73ee378d713dd"},{"url":"https://git.kernel.org/stable/c/c6df794000147a3a02f79984aada4ce83f8d0a1e"},{"url":"https://git.kernel.org/stable/c/466e10194ab81caa2ee6a332d33ba16bcceeeba6"},{"url":"https://git.kernel.org/stable/c/fbe48f06e64134dfeafa89ad23387f66ebca3527"},{"url":"https://git.kernel.org/stable/c/a6d735100f602c830c16d69fb6d780eebd8c9ae1"},{"url":"https://git.kernel.org/stable/c/c000a3a330d97f6c073ace5aa5faf94b9adb4b79"},{"url":"https://git.kernel.org/stable/c/5e28d5a3f774f118896aec17a3a20a9c5c9dfc64"}],"title":"net/sched: sch_qfq: Fix race condition on qfq_aggregate","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T17:38:44.755Z"}},{"x_adpType":"supplier","providerMetadata":{"orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","shortName":"siemens-SADP","dateUpdated":"2026-05-12T12:05:08.048Z"},"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.5","lessThan":"*","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP 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