{"schema":"threatline.record/2","record":{"id":"CVE-2026-98030","aliases":[],"summary":"net: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size\n\nbcm_sf2_cfp_rule_get_all() walks the whole cfp.unique bitmap into\nrule_locs[] without consulting nfc->rule_cnt, which is how many entries\nthe caller had room for.  ETHTOOL_GRXCLSRLALL requires no CAP_NET_ADMIN\nand the ioctl sizes the buffer from the rule_cnt userspace passes in, so\nonce an admin has installed CFP rules any user can ask for fewer slots\nthan there are rules and run off the end of the allocation.  A rule_cnt\nof 0 leaves the buffer pointer NULL and the walk dereferences it.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98030","source_modified_at":"2026-10-19T09:12:35.325Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"7318166cacad158b46240f66250d7cc5a481653b","lessThan":"ca49c526291d7cd3a5cb49b0edd7f50a5ae7176e","status":"affected","versionType":"git"},{"version":"7318166cacad158b46240f66250d7cc5a481653b","lessThan":"8e41ce02589c92356bfd8ef62f6ceff840546e1a","status":"affected","versionType":"git"},{"version":"7318166cacad158b46240f66250d7cc5a481653b","lessThan":"f2cf4ef2d94fc15fd2e21c131fc1ab3f76125bf4","status":"affected","versionType":"git"},{"version":"7318166cacad158b46240f66250d7cc5a481653b","lessThan":"f5e93162b3dd195bfda815e8f7a39aaf1d45437b","status":"affected","versionType":"git"},{"version":"7318166cacad158b46240f66250d7cc5a481653b","lessThan":"f1a2869b3629c0e8394b77b38cb9f19a018c653c","status":"affected","versionType":"git"},{"version":"7318166cacad158b46240f66250d7cc5a481653b","lessThan":"fd1a78c16b1f6978c09cf048e15f349732e4c707","status":"affected","versionType":"git"},{"version":"7318166cacad158b46240f66250d7cc5a481653b","lessThan":"b231b6d8516d3fe0d4bba549908e08d26a4531a5","status":"affected","versionType":"git"},{"version":"7318166cacad158b46240f66250d7cc5a481653b","lessThan":"cdb719f4b8596d9ccee2d56d204c2c4dce982f46","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98030","source_modified_at":"2026-10-19T09:12:35.325Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.11","status":"affected"},{"version":"0","lessThan":"4.11","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98030","source_modified_at":"2026-10-19T09:12:35.325Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8e41ce02589c92356bfd8ef62f6ceff840546e1a","basis":"first unaffected version stated in the CVE record"}],"cvss":7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00122,"percentile":0.01816,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:23:46.959Z","modified_at":"2026-10-19T09:12:35.325Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98030","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:12:35.325Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98030","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/ca49c526291d7cd3a5cb49b0edd7f50a5ae7176e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8e41ce02589c92356bfd8ef62f6ceff840546e1a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f2cf4ef2d94fc15fd2e21c131fc1ab3f76125bf4"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f5e93162b3dd195bfda815e8f7a39aaf1d45437b"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f1a2869b3629c0e8394b77b38cb9f19a018c653c"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/fd1a78c16b1f6978c09cf048e15f349732e4c707"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b231b6d8516d3fe0d4bba549908e08d26a4531a5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/cdb719f4b8596d9ccee2d56d204c2c4dce982f46"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:12:35.325Z","content_hash":"36041e0e5b09f6cbd1cf2eb9fd21565719b1121988d5f11e945f459f21891dfd"}}