{"schema":"threatline.record/2","record":{"id":"CVE-2026-98378","aliases":[],"summary":"bpf: Skip unsettled links in link iterator","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Skip unsettled links in link iterator\n\nbpf_link_prime() inserts a link into link_idr before anon_inode_getfile()\nsucceeds and before bpf_link_settle() publishes the ID in link->id.\nbpf_link_by_id() treats such an ID-zero link as unsettled, but the link\niterator takes a reference without this check.\n\nIf anon_inode_getfile() then fails, the creator removes the ID and frees\nits still-private link directly.  The iterator is left with a dangling\nreference and its next bpf_link_put() accesses freed memory.\n\nTreat ID-zero entries as transient in bpf_link_get_curr_or_next(), just as\nbpf_link_by_id() does.\n\n  BUG: KASAN: slab-use-after-free in bpf_link_put\n  Write of size 8 by task exp/384\n  Call Trace:\n  bpf_link_put                    kernel/bpf/syscall.c:3372\n  bpf_link_seq_next               kernel/bpf/link_iter.c:33\n  bpf_seq_read                    kernel/bpf/bpf_iter.c:158\n  vfs_read                        fs/read_write.c:572\n  ksys_read                       fs/read_write.c:716\n  do_syscall_64                   arch/x86/entry/syscall_64.c:84\n  entry_SYSCALL_64_after_hwframe  arch/x86/entry/entry_64.S:121\n  Kernel panic - not syncing: KASAN: panic_on_warn set ...","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98378","source_modified_at":"2026-10-24T14:08:37.091Z","fetched_at":"2026-10-24T14:26:37.433577Z","product":"Linux","vendor":"Linux","versions":[{"version":"9f88361273082825d9f0d13a543d49f9fa0d44a8","lessThan":"68930f8d40ab4c10ca3b019f076136758fd100a8","status":"affected","versionType":"git"},{"version":"9f88361273082825d9f0d13a543d49f9fa0d44a8","lessThan":"c251ed48bd9063cf7de6049421e78b6de989060f","status":"affected","versionType":"git"},{"version":"9f88361273082825d9f0d13a543d49f9fa0d44a8","lessThan":"798a61edbc436cacdb659927d067368eeb1e30e2","status":"affected","versionType":"git"},{"version":"9f88361273082825d9f0d13a543d49f9fa0d44a8","lessThan":"6e271f093d15d323f42de26f66556af53fa8e19f","status":"affected","versionType":"git"},{"version":"9f88361273082825d9f0d13a543d49f9fa0d44a8","lessThan":"87ce4b53b7436b50fc984f0a6afaf77f68ac5573","status":"affected","versionType":"git"},{"version":"9f88361273082825d9f0d13a543d49f9fa0d44a8","lessThan":"50e80e2bb5e2be8515205b9c496b9640ddefa434","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98378","source_modified_at":"2026-10-24T14:08:37.091Z","fetched_at":"2026-10-24T14:26:37.433577Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.19","status":"affected"},{"version":"0","lessThan":"5.19","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":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","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-2026-98378","source_modified_at":"2026-10-24T14:08:37.091Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"68930f8d40ab4c10ca3b019f076136758fd100a8","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98378","source_modified_at":"2026-10-24T14:08:37.091Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"798a61edbc436cacdb659927d067368eeb1e30e2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98378","source_modified_at":"2026-10-24T14:08:37.091Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"6e271f093d15d323f42de26f66556af53fa8e19f","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98378","source_modified_at":"2026-10-24T14:08:37.091Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"87ce4b53b7436b50fc984f0a6afaf77f68ac5573","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98378","source_modified_at":"2026-10-24T14:08:37.091Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"50e80e2bb5e2be8515205b9c496b9640ddefa434","basis":"first unaffected version stated in the CVE record"}],"cvss":7.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00161,"percentile":0.04882,"score_date":"2026-10-23"},"published_at":"2026-10-09T07:34:18.626Z","modified_at":"2026-10-24T14:08:37.091Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98378","fetched_at":"2026-10-24T14:26:37.433577Z","source_modified_at":"2026-10-24T14:08:37.091Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98378","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/68930f8d40ab4c10ca3b019f076136758fd100a8"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c251ed48bd9063cf7de6049421e78b6de989060f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/798a61edbc436cacdb659927d067368eeb1e30e2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6e271f093d15d323f42de26f66556af53fa8e19f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/87ce4b53b7436b50fc984f0a6afaf77f68ac5573"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/50e80e2bb5e2be8515205b9c496b9640ddefa434"}],"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":"2026-10-24T14:08:37.091Z","content_hash":"417922d589351a07fdf956021c0f73e056451d67f21336b2535fdc5233c4e182"}}