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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Sun, 04 Oct 2026 08:23:17 +0000</lastBuildDate>
    <item>
      <title>CVE-2025-21729 — wifi: rtw89: fix race between cancel_hw_scan and hw_scan completion</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-21729</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 race between cancel_hw_scan and hw_scan completion&lt;/p&gt;
&lt;p&gt;The rtwdev-&amp;gt;scanning flag isn&amp;#39;t protected by mutex originally, so
cancel_hw_scan can pass the condition, but suddenly hw_scan completion
unset the flag and calls ieee80211_scan_completed() that will free
local-&amp;gt;hw_scan_req. Then, cancel_hw_scan raises null-ptr-deref and
use-after-free. Fix it by moving the check condition to where
protected by mutex.&lt;/p&gt;
&lt;p&gt;KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
 CPU: 2 PID: 6922 Comm: kworker/2:2 Tainted: G           OE
 Hardware name: LENOVO 2356AD1/2356AD1, BIOS G7ETB6WW (2.76 ) 09/10/2019
 Workqueue: events cfg80211_conn_work [cfg80211]
 RIP: 0010:rtw89_fw_h2c_scan_offload_be+0xc33/0x13c3 [rtw89_core]
 Code: 00 45 89 6c 24 1c 0f 85 23 01 00 00 48 8b 85 20 ff ff ff 48 8d
 RSP: 0018:ffff88811fd9f068 EFLAGS: 00010206
 RAX: dffffc0000000000 RBX: ffff88811fd9f258 RCX: 0000000000000001
 RDX: 0000000000000011 RSI: 0000000000000001 RDI: 0000000000000089
 RBP: ffff88811fd9f170 R08: 0000000000000000 R09: 0000000000000000
 R10: ffff88811fd9f108 R11: 0000000000000000 R12: ffff88810e47f960
 R13: 0000000000000000 R14: 000000000000ffff R15: 0000000000000000
 FS:  0000000000000000(0000) GS:ffff8881d6f00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00007531dfca55b0 CR3: 00000001be296004 CR4: 00000000001706e0
 Call Trace:
  &amp;lt;TASK&amp;gt;
  ? show_regs+0x61/…&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 race between cancel_hw_scan and hw_scan completion&lt;/p&gt;
&lt;p&gt;The rtwdev-&amp;gt;scanning flag isn&amp;#39;t protected by mutex originally, so
cancel_hw_scan can pass the condition, but suddenly hw_scan completion
unset the flag and calls ieee80211_scan_completed() that will free
local-&amp;gt;hw_scan_req. Then, cancel_hw_scan raises null-ptr-deref and
use-after-free. Fix it by moving the check condition to where
protected by mutex.&lt;/p&gt;
&lt;p&gt;KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
 CPU: 2 PID: 6922 Comm: kworker/2:2 Tainted: G           OE
 Hardware name: LENOVO 2356AD1/2356AD1, BIOS G7ETB6WW (2.76 ) 09/10/2019
 Workqueue: events cfg80211_conn_work [cfg80211]
 RIP: 0010:rtw89_fw_h2c_scan_offload_be+0xc33/0x13c3 [rtw89_core]
 Code: 00 45 89 6c 24 1c 0f 85 23 01 00 00 48 8b 85 20 ff ff ff 48 8d
 RSP: 0018:ffff88811fd9f068 EFLAGS: 00010206
 RAX: dffffc0000000000 RBX: ffff88811fd9f258 RCX: 0000000000000001
 RDX: 0000000000000011 RSI: 0000000000000001 RDI: 0000000000000089
 RBP: ffff88811fd9f170 R08: 0000000000000000 R09: 0000000000000000
 R10: ffff88811fd9f108 R11: 0000000000000000 R12: ffff88810e47f960
 R13: 0000000000000000 R14: 000000000000ffff R15: 0000000000000000
 FS:  0000000000000000(0000) GS:ffff8881d6f00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00007531dfca55b0 CR3: 00000001be296004 CR4: 00000000001706e0
 Call Trace:
  &amp;lt;TASK&amp;gt;
  ? show_regs+0x61/…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2025-21729</guid>
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