CVE-2026-63917
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)
ip6: vti: Use ip6_tnl.net in vti6_changelink().
In the Linux kernel, the following vulnerability has been resolved: ip6: vti: Use ip6_tnl.net in vti6_changelink(). ip netns add ns1 ip netns add ns2 ip -n ns1 link add vti6_test type vti6 remote ::1 local ::2 key 7 ip -n ns1 link set vti6_test netns ns2 ip -n ns2 link set vti6_test type vti6 remote ::3 local ::4 key 9 ip netns del ns2 ip netns del ns1 [ 132.495484] ------------[ cut here ]------------ [ 132.497609] kernel BUG at net/core/dev.c:12376! Commit 61220ab34948 ("vti6: Enable namespace changing") dropped NETIF_F_NETNS_LOCAL from vti6 devices. A vti6 tunnel can then move through IFLA_NET_NS_FD. After the move dev_net(dev) points at the new netns while t->net stays at the creation netns. vti6_changelink() and vti6_update() still use dev_net(dev) and dev_net(t->dev). They unlink from one per netns hash and relink into another. The creation netns is left with a stale entry. cleanup_net() of that netns later walks freed memory. Reachable from an unprivileged user namespace (unshare --user --map-root-user --net). Cross tenant scope on container hosts.
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) |
|---|---|---|---|---|---|
| 61220ab349485d911083d0b7990ccd3db6c63297 | affected | git | 0cdce7618464f7fb06f461e8f4ad575cb1d570f4 | Unavailable | None listed |
| 61220ab349485d911083d0b7990ccd3db6c63297 | affected | git | f5c68875e25f331e497ddfbe81e2d8163a87f136 | Unavailable | None listed |
| 61220ab349485d911083d0b7990ccd3db6c63297 | affected | git | d9c5eecdb3c740e65038651db7c686b10d76d1bc | Unavailable | None listed |
| 61220ab349485d911083d0b7990ccd3db6c63297 | affected | git | f1e89a943ee574d0f2f16246eb3f2d7330fdeb03 | Unavailable | None listed |
| 61220ab349485d911083d0b7990ccd3db6c63297 | affected | git | 225b467e3b631f38be22e4b38062a1fed02fdd21 | Unavailable | None listed |
| 61220ab349485d911083d0b7990ccd3db6c63297 | affected | git | fc32be9ac2788524c6b24efd681cce7a6e731a92 | Unavailable | None listed |
| 61220ab349485d911083d0b7990ccd3db6c63297 | affected | git | ee1778ba0f5cb53be771f97017d01eb356c797bf | Unavailable | None listed |
| 61220ab349485d911083d0b7990ccd3db6c63297 | affected | git | 11b326fb0a374f4654f9be22d0f0f7abd9f7d3fe | 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) |
|---|---|---|---|---|---|
| 3.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.15 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | 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 |