CVE-2025-40018 | In the Linux kernel, the following vulnerability has been resolved: ipvs: Defer ip_vs_ftp unregister during netns cleanup On the netns cleanup path, __ip_vs_ftp_exit() may unregister ip_vs_ftp before connections with valid cp->app pointers are flushed, leading to a use-after-free. Fix this by introducing a global `exiting_module` flag, set to true in ip_vs_ftp_exit() before unregistering the pernet subsystem. In __ip_vs_ftp_exit(), skip ip_vs_ftp unregiste
In the Linux kernel, the following vulnerability has been resolved:
ipvs: Defer ip_vs_ftp unregister during netns cleanup
On the netns cleanup path, __ip_vs_ftp_exit() may unregister ip_vs_ftp
before connections with valid cp->app pointers are flushed, leading to a
use-after-free.
Fix this by introducing a global `exiting_module` flag, set to true in
ip_vs_ftp_exit() before unregistering the pernet subsystem. In
__ip_vs_ftp_exit(), skip ip_vs_ftp unregister if called during netns
cleanup (when exiting_module is false) and defer it to
__ip_vs_cleanup_batch(), which unregisters all apps after all connections
are flushed. If called during module exit, unregister ip_vs_ftp
immediately.
- 🔗 git.kernel.org/stable/c/8a6ecab3847c213ce2855b0378e63ce8…
- 🔗 git.kernel.org/stable/c/421b1ae1574dfdda68b835c15ac4921e…
- 🔗 git.kernel.org/stable/c/1d79471414d7b9424d699afff2aa79ff…
- 🔗 git.kernel.org/stable/c/53717f8a4347b78eac6488072ad8e5ad…
- 🔗 git.kernel.org/stable/c/8cbe2a21d85727b66d7c591fd5d83df0…
- 🔗 git.kernel.org/stable/c/dc1a481359a72ee7e548f1f5da671282…
- 🔗 git.kernel.org/stable/c/a343811ef138a2654071672942752016…
- 🔗 git.kernel.org/stable/c/134121bfd99a06d44ef5ba15a9beb075…
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CVE-2025-40018 | In the Linux kernel, the following vulnerability has been resolved: ipvs: Defer ip_vs_ftp unregister during netns cleanup On the netns cleanup path, __ip_vs_ftp_exit() may unregister ip_vs_ftp before connections with valid cp->app pointers are flushed, leading to a use-after-free. Fix this by introducing a global `exiting_module` flag, set to true in ip_vs_ftp_exit() before unregistering the pernet subsystem. In __ip_vs_ftp_exit(), skip ip_vs_ftp unregiste
In the Linux kernel, the following vulnerability has been resolved: ipvs: Defer ip_vs_ftp unregister during netns cleanup On the netns cleanup path, __ip_vs_ftp_exit() may unregister ip_vs_ftp before connections with valid cp->app pointer