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    <lastBuildDate>Tue, 29 Sep 2026 04:55:23 +0000</lastBuildDate>
    <item>
      <title>CVE-2023-53452 — wifi: rtw89: fix potential race condition between napi_init and napi_enable</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-53452</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;wifi: rtw89: fix potential race condition between napi_init and napi_enable&lt;/p&gt;
&lt;p&gt;A race condition can happen if netdev is registered, but NAPI isn&amp;#39;t
initialized yet, and meanwhile user space starts the netdev that will
enable NAPI. Then, it hits BUG_ON():&lt;/p&gt;
&lt;p&gt;kernel BUG at net/core/dev.c:6423!
 invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
 CPU: 0 PID: 417 Comm: iwd Not tainted 6.2.7-slab-dirty #3 eb0f5a8a9d91
 Hardware name: LENOVO 21DL/LNVNB161216, BIOS JPCN20WW(V1.06) 09/20/2022
 RIP: 0010:napi_enable+0x3f/0x50
 Code: 48 89 c2 48 83 e2 f6 f6 81 89 08 00 00 02 74 0d 48 83 ...
 RSP: 0018:ffffada1414f3548 EFLAGS: 00010246
 RAX: 0000000000000000 RBX: ffffa01425802080 RCX: 0000000000000000
 RDX: 00000000000002ff RSI: ffffada14e50c614 RDI: ffffa01425808dc0
 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
 R10: 0000000000000001 R11: 0000000000000100 R12: ffffa01425808f58
 R13: 0000000000000000 R14: ffffa01423498940 R15: 0000000000000001
 FS:  00007f5577c0a740(0000) GS:ffffa0169fc00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00007f5577a19972 CR3: 0000000125a7a000 CR4: 0000000000750ef0
 PKRU: 55555554
 Call Trace:
  &amp;lt;TASK&amp;gt;
  rtw89_pci_ops_start+0x1c/0x70 [rtw89_pci 6cbc75429515c181cbc386478d5cfb32ffc5a0f8]
  rtw89_core_start+0xbe/0x160 [rtw89_core fe07ecb874820b6d778370d4acb6ef8a37847f22]
  rtw89_ops_start+0x26/0x40 [rtw89_core fe07ecb874820b6d778370d4acb6ef…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;wifi: rtw89: fix potential race condition between napi_init and napi_enable&lt;/p&gt;
&lt;p&gt;A race condition can happen if netdev is registered, but NAPI isn&amp;#39;t
initialized yet, and meanwhile user space starts the netdev that will
enable NAPI. Then, it hits BUG_ON():&lt;/p&gt;
&lt;p&gt;kernel BUG at net/core/dev.c:6423!
 invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
 CPU: 0 PID: 417 Comm: iwd Not tainted 6.2.7-slab-dirty #3 eb0f5a8a9d91
 Hardware name: LENOVO 21DL/LNVNB161216, BIOS JPCN20WW(V1.06) 09/20/2022
 RIP: 0010:napi_enable+0x3f/0x50
 Code: 48 89 c2 48 83 e2 f6 f6 81 89 08 00 00 02 74 0d 48 83 ...
 RSP: 0018:ffffada1414f3548 EFLAGS: 00010246
 RAX: 0000000000000000 RBX: ffffa01425802080 RCX: 0000000000000000
 RDX: 00000000000002ff RSI: ffffada14e50c614 RDI: ffffa01425808dc0
 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
 R10: 0000000000000001 R11: 0000000000000100 R12: ffffa01425808f58
 R13: 0000000000000000 R14: ffffa01423498940 R15: 0000000000000001
 FS:  00007f5577c0a740(0000) GS:ffffa0169fc00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00007f5577a19972 CR3: 0000000125a7a000 CR4: 0000000000750ef0
 PKRU: 55555554
 Call Trace:
  &amp;lt;TASK&amp;gt;
  rtw89_pci_ops_start+0x1c/0x70 [rtw89_pci 6cbc75429515c181cbc386478d5cfb32ffc5a0f8]
  rtw89_core_start+0xbe/0x160 [rtw89_core fe07ecb874820b6d778370d4acb6ef8a37847f22]
  rtw89_ops_start+0x26/0x40 [rtw89_core fe07ecb874820b6d778370d4acb6ef…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2023-53452</guid>
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