ipv6: do not warn on route notification size race
Summary
| CVE | CVE-2026-99070 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-23 13:17:30 UTC |
| Updated | 2026-10-30 13:21:43 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: ipv6: do not warn on route notification size race fib6_info_hw_flags_set() sizes the skb with rt6_nlmsg_size() and later fills it with rt6_fill_node(). With nexthop compatibility mode enabled, a concurrent replacement can grow the group between these independent snapshots. rt6_fill_node() can then legitimately return -EMSGSIZE, so the warning does not prove a sizing bug. Remove the warning. The existing error path still frees the skb and reports the error to listeners. |
Risk And Classification
EPSS: 0.001730000 probability, percentile 0.067080000 (date 2026-11-01)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 907eea486888cfe118c19759bbc4b8fca2e004df dac2b0328495971c7b417fd0143e53643343936e git | Not specified |
| CNA | Linux | Linux | affected 907eea486888cfe118c19759bbc4b8fca2e004df 24b2c95a046e15c9504a6d672b6b0b252952493f git | Not specified |
| CNA | Linux | Linux | affected 907eea486888cfe118c19759bbc4b8fca2e004df 8a3b935b6b6037eefb36bd27a60793a008358e8d git | Not specified |
| CNA | Linux | Linux | affected 907eea486888cfe118c19759bbc4b8fca2e004df 7b112bd43f1172fb152e848570a957467008a5ae git | Not specified |
| CNA | Linux | Linux | affected 907eea486888cfe118c19759bbc4b8fca2e004df 4ac7d92a4698e34e614c254359665b9de1f65283 git | Not specified |
| CNA | Linux | Linux | affected 907eea486888cfe118c19759bbc4b8fca2e004df 291fe0bafee78c95f9f2e7f579f17793fd5a1e5a git | Not specified |
| CNA | Linux | Linux | affected 907eea486888cfe118c19759bbc4b8fca2e004df c97426ec649d99596d8969e1a052c16b14b7b485 git | Not specified |
| CNA | Linux | Linux | affected 5.12 | Not specified |
| CNA | Linux | Linux | unaffected 5.12 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.224 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.191 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.160 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.113 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.57 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.11 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/8a3b935b6b6037eefb36bd27a60793a008358e8d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c97426ec649d99596d8969e1a052c16b14b7b485 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/24b2c95a046e15c9504a6d672b6b0b252952493f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4ac7d92a4698e34e614c254359665b9de1f65283 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/291fe0bafee78c95f9f2e7f579f17793fd5a1e5a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7b112bd43f1172fb152e848570a957467008a5ae | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/dac2b0328495971c7b417fd0143e53643343936e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.