Description
In the Linux kernel, the following vulnerability has been resolved: vsock: Do not allow binding to VMADDR_PORT_ANY It is possible for a vsock to autobind to VMADDR_PORT_ANY. This can cause a use-after-free when a connection is made to the bound socket. The socket returned by accept() also has port VMADDR_PORT_ANY but is not on the list of unbound sockets. Binding it will result in an extra refcount decrement similar to the one fixed in fcdd2242c023 (vsock: Keep the binding until socket destruction). Modify the check in __vsock_bind_connectible() to also prevent binding to VMADDR_PORT_ANY.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d021c344051af91f42c5ba9fdedc176740cbd238 to < c04a2c1ca25b9b23104124d3b2d349d934e302deaffectedd021c344051af91f42c5ba9fdedc176740cbd238 to < d1a5b1964cef42727668ac0d8532dae4f8c19386affectedd021c344051af91f42c5ba9fdedc176740cbd238 to < cf86704798c1b9c46fa59dfc2d662f57d1394d79affectedd021c344051af91f42c5ba9fdedc176740cbd238 to < f138be5d7f301fddad4e65ec66dfc3ceebf79be3affectedd021c344051af91f42c5ba9fdedc176740cbd238 to < 44bd006d5c93f6a8f28b106cbae2428c5d0275b7affectedd021c344051af91f42c5ba9fdedc176740cbd238 to < 32950b1907919be86a7a2697d6f93d57068b3865affectedd021c344051af91f42c5ba9fdedc176740cbd238 to < 8f01093646b49f6330bb2d36761983fd829472b1affectedd021c344051af91f42c5ba9fdedc176740cbd238 to < d73960f0cf03ef1dc9e96ec7a20e538accc26d87affectedd021c344051af91f42c5ba9fdedc176740cbd238 to < aba0c94f61ec05315fa7815d21aefa4c87f6a9f4affected
Linux Linux
Default version status: affected
3.9affected0 to < 3.9unaffected5.4.297 to ≤ 5.4.*unaffected5.10.241 to ≤ 5.10.*unaffected5.15.190 to ≤ 5.15.*unaffected6.1.148 to ≤ 6.1.*unaffected6.6.102 to ≤ 6.6.*unaffected6.12.42 to ≤ 6.12.*unaffected6.15.10 to ≤ 6.15.*unaffected6.16.1 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c04a2c1ca25b9b23104124d3b2d349d934e302de ↗
- https://git.kernel.org/stable/c/d1a5b1964cef42727668ac0d8532dae4f8c19386 ↗
- https://git.kernel.org/stable/c/cf86704798c1b9c46fa59dfc2d662f57d1394d79 ↗
- https://git.kernel.org/stable/c/f138be5d7f301fddad4e65ec66dfc3ceebf79be3 ↗
- https://git.kernel.org/stable/c/44bd006d5c93f6a8f28b106cbae2428c5d0275b7 ↗
- https://git.kernel.org/stable/c/32950b1907919be86a7a2697d6f93d57068b3865 ↗
- https://git.kernel.org/stable/c/8f01093646b49f6330bb2d36761983fd829472b1 ↗
- https://git.kernel.org/stable/c/d73960f0cf03ef1dc9e96ec7a20e538accc26d87 ↗
- https://git.kernel.org/stable/c/aba0c94f61ec05315fa7815d21aefa4c87f6a9f4 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗