Answer in brief
CVE-2026-98378 records a High severity (CVSS 7.8) vulnerability in bpf: Skip unsettled links in link iterator. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=9f88361273082825d9f0d13a543d49f9fa0d44a8 <68930f8d40ab4c10ca3b019f076136758fd100a8 || >=9f88361273082825d9f0d13a543d49f9fa0d44a8 <c251ed48bd9063cf7de6049421e78b6de989060f || >=9f88361273082825d9f0d13a543d49f9fa0d44a8 <798a61edbc436cacdb659927d067368eeb1e30e2 || >=9f88361273082825d9f0d13a543d49f9fa0d44a8 <6e271f093d15d323f42de26f66556af53fa8e19f || >=9f88361273082825d9f0d13a543d49f9fa0d44a8 <87ce4b53b7436b50fc984f0a6afaf77f68ac5573 || >=9f88361273082825d9f0d13a543d49f9fa0d44a8 <50e80e2bb5e2be8515205b9c496b9640ddefa434 | 68930f8d40ab4c10ca3b019f076136758fd100a8, c251ed48bd9063cf7de6049421e78b6de989060f, 798a61edbc436cacdb659927d067368eeb1e30e2, 6e271f093d15d323f42de26f66556af53fa8e19f, 87ce4b53b7436b50fc984f0a6afaf77f68ac5573, 50e80e2bb5e2be8515205b9c496b9640ddefa434 |
| Linux/Linuxgeneric | 5.19 | Not reported |
Published upstream
Oct 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 9, 2026
In the Linux kernel, the following vulnerability has been resolved: bpf: Skip unsettled links in link iterator bpf_link_prime() inserts a link into link_idr before anon_inode_getfile() succeeds and before bpf_link_settle() publishes the ID in link->id. bpf_link_by_id() treats such an ID-zero link as unsettled, but the link iterator takes a reference without this check. If anon_inode_getfile() then fails, the creator removes the ID and frees its still-private link directly. The iterator is left with a dangling reference and its next bpf_link_put() accesses freed memory. Treat ID-zero entries as transient in bpf_link_get_curr_or_next(), just as bpf_link_by_id() does. BUG: KASAN: slab-use-after-free in bpf_link_put Write of size 8 by task exp/384 Call Trace: bpf_link_put kernel/bpf/syscall.c:3372 bpf_link_seq_next kernel/bpf/link_iter.c:33 bpf_seq_read kernel/bpf/bpf_iter.c:158 vfs_read fs/read_write.c:572 ksys_read fs/read_write.c:716 do_syscall_64 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:121 Kernel panic - not syncing: KASAN: panic_on_warn set ...
Quoted source text, attributed separately from HOL analysis.