CVE-2026-63968
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 possible infinite loop in fib6_select_path()
In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6_select_path() Found while auditing the same pattern Sashiko reported in rt6_fill_node() [1]. Apply the same fix as commit f8d8ce1b515a ("ipv6: fix possible infinite loop in fib6_info_uses_dev()"). Writers holding tb6_lock can list_del_rcu(&first->fib6_siblings) without waiting for RCU readers; first->fib6_siblings.next then still points into the old ring and this softirq-side walker never reaches &first->fib6_siblings as its terminator. fib6_purge_rt() always WRITE_ONCE()s first->fib6_nsiblings to 0 before list_del_rcu(), so an inside-loop check is a reliable detach signal. [1] https://sashiko.dev/#/patchset/20260526020227.4857-1-jiayuan.chen%40linux.dev
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) |
|---|---|---|---|---|---|
| d0ec61c9f3583b76aebdbb271f5c0d3fcccd48b2 | affected | git | 3948a7d92f7678e89e1776bb2d169afcad63b1ae | Unavailable | None listed |
| 52da02521ede55fb86546c3fffd9377b3261b91f | affected | git | c87cd3cb309634bc8f50a54e2079424f219ac21f | Unavailable | None listed |
| 34a949e7a0869dfa31a40416d2a56973fae1807b | affected | git | 0f7b73c3452635de83b8711b31abdda8e49aad7b | Unavailable | None listed |
| d9ccb18f83ea2bb654289b6ecf014fd267cc988b | affected | git | ab9a10969a907b472a0196d999c08ff7144172e3 | Unavailable | None listed |
| d9ccb18f83ea2bb654289b6ecf014fd267cc988b | affected | git | 9b9d5bd6e3d4c9cecab5407604b690684b2532d2 | Unavailable | None listed |
| d9ccb18f83ea2bb654289b6ecf014fd267cc988b | affected | git | 9c7da87c2dc860bb17ca1ece942495d28b1ce3b9 | Unavailable | None listed |
| 11edcd026012ac18acee0f1514db3ed1b160fc6f | affected | git | Unavailable | Unavailable | None listed |
| 6.1.128 | affected | semver | 6.1.176 | Unavailable | None listed |
| 6.6.75 | affected | semver | 6.6.143 | Unavailable | None listed |
| 6.12.2 | affected | semver | 6.12.93 | Unavailable | None listed |
| 6.11.11 | affected | semver | 6.12 | 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) |
|---|---|---|---|---|---|
| 6.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.13 | Unavailable | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.93 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.35 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |