Answer in brief
CVE-2025-40018 records a Unknown severity vulnerability in ipvs: Defer ip_vs_ftp unregister during netns cleanup. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2025-40018 records a Unknown severity vulnerability in ipvs: Defer ip_vs_ftp unregister during netns cleanup. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=61b1ab4583e275af216c8454b9256de680499b19 <8a6ecab3847c213ce2855b0378e63ce839085de3 || >=61b1ab4583e275af216c8454b9256de680499b19 <421b1ae1574dfdda68b835c15ac4921ec0030182 || >=61b1ab4583e275af216c8454b9256de680499b19 <1d79471414d7b9424d699afff2aa79fff322f52d || >=61b1ab4583e275af216c8454b9256de680499b19 <53717f8a4347b78eac6488072ad8e5adbaff38d9 || >=61b1ab4583e275af216c8454b9256de680499b19 <8cbe2a21d85727b66d7c591fd5d83df0d8c4f757 || >=61b1ab4583e275af216c8454b9256de680499b19 <dc1a481359a72ee7e548f1f5da671282a7c13b8f || >=61b1ab4583e275af216c8454b9256de680499b19 <a343811ef138a265407167294275201621e9ebb2 || >=61b1ab4583e275af216c8454b9256de680499b19 <134121bfd99a06d44ef5ba15a9beb075297c0821 | 8a6ecab3847c213ce2855b0378e63ce839085de3, 421b1ae1574dfdda68b835c15ac4921ec0030182, 1d79471414d7b9424d699afff2aa79fff322f52d, 53717f8a4347b78eac6488072ad8e5adbaff38d9, 8cbe2a21d85727b66d7c591fd5d83df0d8c4f757, dc1a481359a72ee7e548f1f5da671282a7c13b8f, a343811ef138a265407167294275201621e9ebb2, 134121bfd99a06d44ef5ba15a9beb075297c0821 |
| Linux/Linuxgeneric | 2.6.39 | Not reported |
Published upstream
Oct 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=61b1ab4583e275af216c8454b9256de680499b19 <8a6ecab3847c213ce2855b0378e63ce839085de3 || >=61b1ab4583e275af216c8454b9256de680499b19 <421b1ae1574dfdda68b835c15ac4921ec0030182 || >=61b1ab4583e275af216c8454b9256de680499b19 <1d79471414d7b9424d699afff2aa79fff322f52d || >=61b1ab4583e275af216c8454b9256de680499b19 <53717f8a4347b78eac6488072ad8e5adbaff38d9 || >=61b1ab4583e275af216c8454b9256de680499b19 <8cbe2a21d85727b66d7c591fd5d83df0d8c4f757 || >=61b1ab4583e275af216c8454b9256de680499b19 <dc1a481359a72ee7e548f1f5da671282a7c13b8f || >=61b1ab4583e275af216c8454b9256de680499b19 <a343811ef138a265407167294275201621e9ebb2 || >=61b1ab4583e275af216c8454b9256de680499b19 <134121bfd99a06d44ef5ba15a9beb075297c0821 | 8a6ecab3847c213ce2855b0378e63ce839085de3, 421b1ae1574dfdda68b835c15ac4921ec0030182, 1d79471414d7b9424d699afff2aa79fff322f52d, 53717f8a4347b78eac6488072ad8e5adbaff38d9, 8cbe2a21d85727b66d7c591fd5d83df0d8c4f757, dc1a481359a72ee7e548f1f5da671282a7c13b8f, a343811ef138a265407167294275201621e9ebb2, 134121bfd99a06d44ef5ba15a9beb075297c0821 |
| Linux/Linuxgeneric | 2.6.39 | Not reported |
Published upstream
Oct 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.