Answer in brief
CVE-2026-98485 records a High severity (CVSS 7.1) vulnerability in netfilter: ip6t_rt: fix zero-address non-strict match out-of-bounds read. 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 7.1. 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 | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <959d1829d1ce8b91b435b24a923b51bcc8897090 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fe336bab13834394320997de8b16ca4a913b4f13 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5a54f8b7f7fe207a5c14713015a5820588faf1ad || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b89249819a7d6698bed152feafd3bc6c08489d15 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dd55c0ea87bf70e4e4b3b683acd29ef981335b26 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <191239b0939692e92459d8d32cad14247fa93f89 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d9cf4ac6f326330e1fe4d95671d36a6ff3593f64 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <82313c169eddc02b1bf5ba6b427803e272d3ec42 | 959d1829d1ce8b91b435b24a923b51bcc8897090, fe336bab13834394320997de8b16ca4a913b4f13, 5a54f8b7f7fe207a5c14713015a5820588faf1ad, b89249819a7d6698bed152feafd3bc6c08489d15, dd55c0ea87bf70e4e4b3b683acd29ef981335b26, 191239b0939692e92459d8d32cad14247fa93f89, d9cf4ac6f326330e1fe4d95671d36a6ff3593f64, 82313c169eddc02b1bf5ba6b427803e272d3ec42 |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Oct 18, 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 18, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_rt: fix zero-address non-strict match out-of-bounds read rt_mt6_check() permits rules to be configured with rtinfo->addrnr == 0 even when address matching (IP6T_RT_FST_MASK) is requested. In the IP6T_RT_FST_NSTRICT path, rt_mt6() evaluates packet routing addresses against rtinfo->addrs[i] and terminates backwards at the bottom of the loop: if (ipv6_addr_equal(ap, &rtinfo->addrs[i])) { i++; } if (i == rtinfo->addrnr) break; When addrnr is 0, if the first packet address matches rtinfo->addrs[0], i is incremented to 1. Because i is now strictly greater than addrnr (0), the loop termination condition (i == rtinfo->addrnr) is bypassed and will never be satisfied. If a crafted IPv6 packet contains matching routing addresses, i will advance past IP6T_RT_HOPS (16). The subsequent call to ipv6_addr_equal() reads beyond struct ip6t_rt, triggering UBSAN/KASAN out-of-bounds warnings or kernel panics. Fix this by: 1. Rejecting rules in rt_mt6_check() where IP6T_RT_FST_MASK is set but rtinfo->addrnr is zero. 2. In rt_mt6(), moving the termination condition (i < rtinfo->addrnr) into the for-loop header condition and removing the backwards break at the end of the loop body.
Quoted source text, attributed separately from HOL analysis.