{"api_version":"1","generated_at":"2026-10-01T17:26:01+00:00","cve":"CVE-2026-97998","urls":{"html":"https://cve.report/CVE-2026-97998","api":"https://cve.report/api/cve/CVE-2026-97998.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97998","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97998"},"summary":{"title":"netfilter: nfnetlink_log: cope with concurrent instance destruction","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: cope with concurrent instance destruction\n\nInstances are refcounted. However, only memory release happens on the\n1 -> 0 transition; the unlink from hashes can occur with any refcount.\n\nUncooperative userspace can force a situation where a queue is pending\nfor destruction from netlink event while a different socket with same\nportid processes an UNBIND request.\n\nWith right timing, this will unhash the instance again:\n\nOops: general protection fault, [..]\nCall Trace:\n <TASK>\n nfulnl_recv_config+0x31a/0xd50\n nfnetlink_rcv_msg+0x7c2/0xeb0","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:28","updated_at":"2026-09-25 11:17:28"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/1a7a8ac9a9f0ad0d410c901cb6f233833518844c","name":"https://git.kernel.org/stable/c/1a7a8ac9a9f0ad0d410c901cb6f233833518844c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/387d744fa7e499d2c3748a4e60e02ebb24e7fb16","name":"https://git.kernel.org/stable/c/387d744fa7e499d2c3748a4e60e02ebb24e7fb16","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb","name":"https://git.kernel.org/stable/c/e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0234d7ca0317be0a623300e1693cd794bbfdf8af","name":"https://git.kernel.org/stable/c/0234d7ca0317be0a623300e1693cd794bbfdf8af","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97998","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97998","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0597f2680d666a3bcf101ac0c771ba7e50016bbd 0234d7ca0317be0a623300e1693cd794bbfdf8af git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0597f2680d666a3bcf101ac0c771ba7e50016bbd 1a7a8ac9a9f0ad0d410c901cb6f233833518844c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0597f2680d666a3bcf101ac0c771ba7e50016bbd e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0597f2680d666a3bcf101ac0c771ba7e50016bbd 387d744fa7e499d2c3748a4e60e02ebb24e7fb16 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"97998","cve":"CVE-2026-97998","epss":"0.002000000","percentile":"0.088130000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nfnetlink_log.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0234d7ca0317be0a623300e1693cd794bbfdf8af","status":"affected","version":"0597f2680d666a3bcf101ac0c771ba7e50016bbd","versionType":"git"},{"lessThan":"1a7a8ac9a9f0ad0d410c901cb6f233833518844c","status":"affected","version":"0597f2680d666a3bcf101ac0c771ba7e50016bbd","versionType":"git"},{"lessThan":"e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb","status":"affected","version":"0597f2680d666a3bcf101ac0c771ba7e50016bbd","versionType":"git"},{"lessThan":"387d744fa7e499d2c3748a4e60e02ebb24e7fb16","status":"affected","version":"0597f2680d666a3bcf101ac0c771ba7e50016bbd","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nfnetlink_log.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.14"},{"lessThan":"2.6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"2.6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"2.6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"2.6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"2.6.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: cope with concurrent instance destruction\n\nInstances are refcounted. However, only memory release happens on the\n1 -> 0 transition; the unlink from hashes can occur with any refcount.\n\nUncooperative userspace can force a situation where a queue is pending\nfor destruction from netlink event while a different socket with same\nportid processes an UNBIND request.\n\nWith right timing, this will unhash the instance again:\n\nOops: general protection fault, [..]\nCall Trace:\n <TASK>\n nfulnl_recv_config+0x31a/0xd50\n nfnetlink_rcv_msg+0x7c2/0xeb0"}],"providerMetadata":{"dateUpdated":"2026-09-25T10:23:28.074Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0234d7ca0317be0a623300e1693cd794bbfdf8af"},{"url":"https://git.kernel.org/stable/c/1a7a8ac9a9f0ad0d410c901cb6f233833518844c"},{"url":"https://git.kernel.org/stable/c/e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb"},{"url":"https://git.kernel.org/stable/c/387d744fa7e499d2c3748a4e60e02ebb24e7fb16"}],"title":"netfilter: nfnetlink_log: cope with concurrent instance destruction","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97998","datePublished":"2026-09-25T10:23:28.074Z","dateReserved":"2026-09-25T10:18:58.209Z","dateUpdated":"2026-09-25T10:23:28.074Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:28","lastModifiedDate":"2026-09-25 11:17:28","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97998","Ordinal":"1","Title":"netfilter: nfnetlink_log: cope with concurrent instance destruct","CVE":"CVE-2026-97998","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97998","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: cope with concurrent instance destruction\n\nInstances are refcounted. However, only memory release happens on the\n1 -> 0 transition; the unlink from hashes can occur with any refcount.\n\nUncooperative userspace can force a situation where a queue is pending\nfor destruction from netlink event while a different socket with same\nportid processes an UNBIND request.\n\nWith right timing, this will unhash the instance again:\n\nOops: general protection fault, [..]\nCall Trace:\n <TASK>\n nfulnl_recv_config+0x31a/0xd50\n nfnetlink_rcv_msg+0x7c2/0xeb0","Type":"Description","Title":"netfilter: nfnetlink_log: cope with concurrent instance destruct"}]}}}