Answer in brief
CVE-2024-50257 records a Unknown severity vulnerability in netfilter: Fix use-after-free in get_info(). 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 | >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <ba22ea01348384df19cc1fabc7964be6e7189749 || >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <cb7c388b5967946f097afdb759b7c860305f2d96 || >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <6a1f088f9807f5166f58902d26246d0b88da03a8 || >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <bab3bb35c03b263c486833d50d50c081d9e9832b || >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <f48d258f0ac540f00fa617dac496c4c18b5dc2fa | ba22ea01348384df19cc1fabc7964be6e7189749, cb7c388b5967946f097afdb759b7c860305f2d96, 6a1f088f9807f5166f58902d26246d0b88da03a8, bab3bb35c03b263c486833d50d50c081d9e9832b, f48d258f0ac540f00fa617dac496c4c18b5dc2fa |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Nov 9, 2024
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: netfilter: Fix use-after-free in get_info() ip6table_nat module unload has refcnt warning for UAF. call trace is: WARNING: CPU: 1 PID: 379 at kernel/module/main.c:853 module_put+0x6f/0x80 Modules linked in: ip6table_nat(-) CPU: 1 UID: 0 PID: 379 Comm: ip6tables Not tainted 6.12.0-rc4-00047-gc2ee9f594da8-dirty #205 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:module_put+0x6f/0x80 Call Trace: <TASK> get_info+0x128/0x180 do_ip6t_get_ctl+0x6a/0x430 nf_getsockopt+0x46/0x80 ipv6_getsockopt+0xb9/0x100 rawv6_getsockopt+0x42/0x190 do_sock_getsockopt+0xaa/0x180 __sys_getsockopt+0x70/0xc0 __x64_sys_getsockopt+0x20/0x30 do_syscall_64+0xa2/0x1a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Concurrent execution of module unload and get_info() trigered the warning. The root cause is as follows: cpu0 cpu1 module_exit //mod->state = MODULE_STATE_GOING ip6table_nat_exit xt_unregister_template kfree(t) //removed from templ_list getinfo() t = xt_find_table_lock list_for_each_entry(tmpl, &xt_templates[af]...) if (strcmp(tmpl->name, name)) continue; //table not found try_module_get list_for_each_entry(t, &xt_net->tables[af]...) return t; //not get refcnt module_put(t->me) //uaf unregister_pernet_subsys //remove table from xt_net list While xt_table module was going away and has been removed from xt_templates list, we couldnt get refcnt of xt_table->me. Check module in xt_net->tables list re-traversal to fix it.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2024-50257 records a Unknown severity vulnerability in netfilter: Fix use-after-free in get_info(). 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 | >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <ba22ea01348384df19cc1fabc7964be6e7189749 || >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <cb7c388b5967946f097afdb759b7c860305f2d96 || >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <6a1f088f9807f5166f58902d26246d0b88da03a8 || >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <bab3bb35c03b263c486833d50d50c081d9e9832b || >=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <f48d258f0ac540f00fa617dac496c4c18b5dc2fa | ba22ea01348384df19cc1fabc7964be6e7189749, cb7c388b5967946f097afdb759b7c860305f2d96, 6a1f088f9807f5166f58902d26246d0b88da03a8, bab3bb35c03b263c486833d50d50c081d9e9832b, f48d258f0ac540f00fa617dac496c4c18b5dc2fa |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Nov 9, 2024
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: netfilter: Fix use-after-free in get_info() ip6table_nat module unload has refcnt warning for UAF. call trace is: WARNING: CPU: 1 PID: 379 at kernel/module/main.c:853 module_put+0x6f/0x80 Modules linked in: ip6table_nat(-) CPU: 1 UID: 0 PID: 379 Comm: ip6tables Not tainted 6.12.0-rc4-00047-gc2ee9f594da8-dirty #205 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:module_put+0x6f/0x80 Call Trace: <TASK> get_info+0x128/0x180 do_ip6t_get_ctl+0x6a/0x430 nf_getsockopt+0x46/0x80 ipv6_getsockopt+0xb9/0x100 rawv6_getsockopt+0x42/0x190 do_sock_getsockopt+0xaa/0x180 __sys_getsockopt+0x70/0xc0 __x64_sys_getsockopt+0x20/0x30 do_syscall_64+0xa2/0x1a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Concurrent execution of module unload and get_info() trigered the warning. The root cause is as follows: cpu0 cpu1 module_exit //mod->state = MODULE_STATE_GOING ip6table_nat_exit xt_unregister_template kfree(t) //removed from templ_list getinfo() t = xt_find_table_lock list_for_each_entry(tmpl, &xt_templates[af]...) if (strcmp(tmpl->name, name)) continue; //table not found try_module_get list_for_each_entry(t, &xt_net->tables[af]...) return t; //not get refcnt module_put(t->me) //uaf unregister_pernet_subsys //remove table from xt_net list While xt_table module was going away and has been removed from xt_templates list, we couldnt get refcnt of xt_table->me. Check module in xt_net->tables list re-traversal to fix it.
Quoted source text, attributed separately from HOL analysis.