Answer in brief
CVE-2023-52999 records a Unknown severity vulnerability in net: fix UaF in netns ops registration error path. 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 | >=5a2ea549be94924364f6911227d99be86e8cf34a <ad0dfe9bcf0d78e699c7efb64c90ed062dc48bea || >=97ad240fd9aa9214497d14af2b91608e20856cac <ddd49cbbd4c1ceb38032018b589b44208e54f55e || >=c3edc6e808209aa705185f732e682a370981ced1 <d4c008f3b7f7d4ffd311eb2dae5e75b3cbddacd0 || >=a1e18acb0246bfb001b08b8b1b830b5ec92a0f13 <66689a72ba73575e76d4f6a8748d3fa2690ec1c4 || >=d266935ac43d57586e311a087510fe6a084af742 <12075708f2e77ee6a9f8bb2cf512c38be3099794 || >=d266935ac43d57586e311a087510fe6a084af742 <71ab9c3e2253619136c31c89dbb2c69305cc89b1 || 4a4df5e78712de39d6f90d6a64b5eb48dca03bd5 || >=4.19.264 <4.19.272 || >=5.4.223 <5.4.231 || >=5.10.153 <5.10.166 || >=5.15.77 <5.15.91 || >=6.0.7 <6.1 | ad0dfe9bcf0d78e699c7efb64c90ed062dc48bea, ddd49cbbd4c1ceb38032018b589b44208e54f55e, d4c008f3b7f7d4ffd311eb2dae5e75b3cbddacd0, 66689a72ba73575e76d4f6a8748d3fa2690ec1c4, 12075708f2e77ee6a9f8bb2cf512c38be3099794, 71ab9c3e2253619136c31c89dbb2c69305cc89b1, 4.19.272, 5.4.231, 5.10.166, 5.15.91, 6.1 |
| Linux/Linuxgeneric | 6.1 | Not reported |
Published upstream
Mar 27, 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: net: fix UaF in netns ops registration error path If net_assign_generic() fails, the current error path in ops_init() tries to clear the gen pointer slot. Anyway, in such error path, the gen pointer itself has not been modified yet, and the existing and accessed one is smaller than the accessed index, causing an out-of-bounds error: BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320 Write of size 8 at addr ffff888109124978 by task modprobe/1018 CPU: 2 PID: 1018 Comm: modprobe Not tainted 6.2.0-rc2.mptcp_ae5ac65fbed5+ #1641 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x6a/0x9f print_address_description.constprop.0+0x86/0x2b5 print_report+0x11b/0x1fb kasan_report+0x87/0xc0 ops_init+0x2de/0x320 register_pernet_operations+0x2e4/0x750 register_pernet_subsys+0x24/0x40 tcf_register_action+0x9f/0x560 do_one_initcall+0xf9/0x570 do_init_module+0x190/0x650 load_module+0x1fa5/0x23c0 __do_sys_finit_module+0x10d/0x1b0 do_syscall_64+0x58/0x80 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f42518f778d Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d cb 56 2c 00 f7 d8 64 89 01 48 RSP: 002b:00007fff96869688 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 00005568ef7f7c90 RCX: 00007f42518f778d RDX: 0000000000000000 RSI: 00005568ef41d796 RDI: 0000000000000003 RBP: 00005568ef41d796 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00005568ef7f7d30 R14: 0000000000040000 R15: 0000000000000000 </TASK> This change addresses the issue by skipping the gen pointer de-reference in the mentioned error-path. Found by code inspection and verified with explicit error injection on a kasan-enabled kernel.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2023-52999 records a Unknown severity vulnerability in net: fix UaF in netns ops registration error path. 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 | >=5a2ea549be94924364f6911227d99be86e8cf34a <ad0dfe9bcf0d78e699c7efb64c90ed062dc48bea || >=97ad240fd9aa9214497d14af2b91608e20856cac <ddd49cbbd4c1ceb38032018b589b44208e54f55e || >=c3edc6e808209aa705185f732e682a370981ced1 <d4c008f3b7f7d4ffd311eb2dae5e75b3cbddacd0 || >=a1e18acb0246bfb001b08b8b1b830b5ec92a0f13 <66689a72ba73575e76d4f6a8748d3fa2690ec1c4 || >=d266935ac43d57586e311a087510fe6a084af742 <12075708f2e77ee6a9f8bb2cf512c38be3099794 || >=d266935ac43d57586e311a087510fe6a084af742 <71ab9c3e2253619136c31c89dbb2c69305cc89b1 || 4a4df5e78712de39d6f90d6a64b5eb48dca03bd5 || >=4.19.264 <4.19.272 || >=5.4.223 <5.4.231 || >=5.10.153 <5.10.166 || >=5.15.77 <5.15.91 || >=6.0.7 <6.1 | ad0dfe9bcf0d78e699c7efb64c90ed062dc48bea, ddd49cbbd4c1ceb38032018b589b44208e54f55e, d4c008f3b7f7d4ffd311eb2dae5e75b3cbddacd0, 66689a72ba73575e76d4f6a8748d3fa2690ec1c4, 12075708f2e77ee6a9f8bb2cf512c38be3099794, 71ab9c3e2253619136c31c89dbb2c69305cc89b1, 4.19.272, 5.4.231, 5.10.166, 5.15.91, 6.1 |
| Linux/Linuxgeneric | 6.1 | Not reported |
Published upstream
Mar 27, 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: net: fix UaF in netns ops registration error path If net_assign_generic() fails, the current error path in ops_init() tries to clear the gen pointer slot. Anyway, in such error path, the gen pointer itself has not been modified yet, and the existing and accessed one is smaller than the accessed index, causing an out-of-bounds error: BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320 Write of size 8 at addr ffff888109124978 by task modprobe/1018 CPU: 2 PID: 1018 Comm: modprobe Not tainted 6.2.0-rc2.mptcp_ae5ac65fbed5+ #1641 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x6a/0x9f print_address_description.constprop.0+0x86/0x2b5 print_report+0x11b/0x1fb kasan_report+0x87/0xc0 ops_init+0x2de/0x320 register_pernet_operations+0x2e4/0x750 register_pernet_subsys+0x24/0x40 tcf_register_action+0x9f/0x560 do_one_initcall+0xf9/0x570 do_init_module+0x190/0x650 load_module+0x1fa5/0x23c0 __do_sys_finit_module+0x10d/0x1b0 do_syscall_64+0x58/0x80 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f42518f778d Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d cb 56 2c 00 f7 d8 64 89 01 48 RSP: 002b:00007fff96869688 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 00005568ef7f7c90 RCX: 00007f42518f778d RDX: 0000000000000000 RSI: 00005568ef41d796 RDI: 0000000000000003 RBP: 00005568ef41d796 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00005568ef7f7d30 R14: 0000000000040000 R15: 0000000000000000 </TASK> This change addresses the issue by skipping the gen pointer de-reference in the mentioned error-path. Found by code inspection and verified with explicit error injection on a kasan-enabled kernel.
Quoted source text, attributed separately from HOL analysis.