CVE-2026-97940
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ipv6: fix fib6 walker UAF on seq stop
In the Linux kernel, the following vulnerability has been resolved: ipv6: fix fib6 walker UAF on seq stop ipv6_route_iter_active() treats a walker in FWS_U at the table root as already unlinked. fib6_del_route() can move a still-linked walker into that same state when the current leaf is the last route at the root, so ipv6_route_native_seq_stop() skips fib6_walker_unlink(). The seq private object can then be freed while it remains on net->ipv6.fib6_walkers. A later route deletion walks the dangling list and uses the freed walker. Use the list head as membership state and reinitialize it when unlinking. Keep the existing w->node check so a never-started iterator with a zeroed private object is not treated as linked. The same stop helper is used by /proc/net/ipv6_route and by the BPF ipv6_route iterator. The BPF show path only widens the race.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 | affected | git | 9a3f73d62c86271614eda4c43315230896a37018 | Unavailable | None listed |
| 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 | affected | git | 63407cddabc5992b5ac03af165559f4a1968a032 | Unavailable | None listed |
| 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 | affected | git | 05b687ee04f816658f4a9cf586f4d2f129157943 | Unavailable | None listed |
| 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 | affected | git | 14fdaba201fdff92a3e45994e02bccda409cb19d | Unavailable | None listed |
| 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 | affected | git | 0eede1689610e9eeaf729ba86fd1321799eb91a0 | Unavailable | None listed |
| 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 | affected | git | b89b691dd00bf39b9ba39ab9446f8c62f419fa7b | Unavailable | None listed |
| 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 | affected | git | 4553cfafa8d05c4ce20b1d18f79d9bb3b303fc02 | Unavailable | None listed |
| 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 | affected | git | 19b4ed644d68098cc62ab612727f40d30f43476c | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.13 | Unavailable | None listed |
| 5.10.271 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.222 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.158 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.111 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.53 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.7 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |