CVE-2025-40018High· 7.8▾ TwilightIn 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 poin…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
Linux >= 61b1ab4583e275af216c8454b9256de680499b19 < 8a6ecab3847c213ce2855b0378e63ce839085de3Linux >= 61b1ab4583e275af216c8454b9256de680499b19 < 421b1ae1574dfdda68b835c15ac4921ec0030182Linux >= 61b1ab4583e275af216c8454b9256de680499b19 < 1d79471414d7b9424d699afff2aa79fff322f52dLinux >= 61b1ab4583e275af216c8454b9256de680499b19 < 53717f8a4347b78eac6488072ad8e5adbaff38d9Linux >= 61b1ab4583e275af216c8454b9256de680499b19 < 8cbe2a21d85727b66d7c591fd5d83df0d8c4f757Linux >= 61b1ab4583e275af216c8454b9256de680499b19 < dc1a481359a72ee7e548f1f5da671282a7c13b8fLinux >= 61b1ab4583e275af216c8454b9256de680499b19 < a343811ef138a265407167294275201621e9ebb2Linux >= 61b1ab4583e275af216c8454b9256de680499b19 < 134121bfd99a06d44ef5ba15a9beb075297c0821Linux 2.6.39Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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