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    <link>https://cve.radiocsirt.org</link>
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    <lastBuildDate>Thu, 08 Oct 2026 12:50:15 +0000</lastBuildDate>
    <item>
      <title>CVE-2024-26862 — packet: annotate data-races around ignore_outgoing</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2024-26862</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;packet: annotate data-races around ignore_outgoing&lt;/p&gt;
&lt;p&gt;ignore_outgoing is read locklessly from dev_queue_xmit_nit()
and packet_getsockopt()&lt;/p&gt;
&lt;p&gt;Add appropriate READ_ONCE()/WRITE_ONCE() annotations.&lt;/p&gt;
&lt;p&gt;syzbot reported:&lt;/p&gt;
&lt;p&gt;BUG: KCSAN: data-race in dev_queue_xmit_nit / packet_setsockopt&lt;/p&gt;
&lt;p&gt;write to 0xffff888107804542 of 1 bytes by task 22618 on cpu 0:
 packet_setsockopt+0xd83/0xfd0 net/packet/af_packet.c:4003
 do_sock_setsockopt net/socket.c:2311 [inline]
 __sys_setsockopt+0x1d8/0x250 net/socket.c:2334
 __do_sys_setsockopt net/socket.c:2343 [inline]
 __se_sys_setsockopt net/socket.c:2340 [inline]
 __x64_sys_setsockopt+0x66/0x80 net/socket.c:2340
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75&lt;/p&gt;
&lt;p&gt;read to 0xffff888107804542 of 1 bytes by task 27 on cpu 1:
 dev_queue_xmit_nit+0x82/0x620 net/core/dev.c:2248
 xmit_one net/core/dev.c:3527 [inline]
 dev_hard_start_xmit+0xcc/0x3f0 net/core/dev.c:3547
 __dev_queue_xmit+0xf24/0x1dd0 net/core/dev.c:4335
 dev_queue_xmit include/linux/netdevice.h:3091 [inline]
 batadv_send_skb_packet+0x264/0x300 net/batman-adv/send.c:108
 batadv_send_broadcast_skb+0x24/0x30 net/batman-adv/send.c:127
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x3f0/0x4b0 net/batman-adv/bat_iv_ogm.c:1700
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_wor…&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;packet: annotate data-races around ignore_outgoing&lt;/p&gt;
&lt;p&gt;ignore_outgoing is read locklessly from dev_queue_xmit_nit()
and packet_getsockopt()&lt;/p&gt;
&lt;p&gt;Add appropriate READ_ONCE()/WRITE_ONCE() annotations.&lt;/p&gt;
&lt;p&gt;syzbot reported:&lt;/p&gt;
&lt;p&gt;BUG: KCSAN: data-race in dev_queue_xmit_nit / packet_setsockopt&lt;/p&gt;
&lt;p&gt;write to 0xffff888107804542 of 1 bytes by task 22618 on cpu 0:
 packet_setsockopt+0xd83/0xfd0 net/packet/af_packet.c:4003
 do_sock_setsockopt net/socket.c:2311 [inline]
 __sys_setsockopt+0x1d8/0x250 net/socket.c:2334
 __do_sys_setsockopt net/socket.c:2343 [inline]
 __se_sys_setsockopt net/socket.c:2340 [inline]
 __x64_sys_setsockopt+0x66/0x80 net/socket.c:2340
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75&lt;/p&gt;
&lt;p&gt;read to 0xffff888107804542 of 1 bytes by task 27 on cpu 1:
 dev_queue_xmit_nit+0x82/0x620 net/core/dev.c:2248
 xmit_one net/core/dev.c:3527 [inline]
 dev_hard_start_xmit+0xcc/0x3f0 net/core/dev.c:3547
 __dev_queue_xmit+0xf24/0x1dd0 net/core/dev.c:4335
 dev_queue_xmit include/linux/netdevice.h:3091 [inline]
 batadv_send_skb_packet+0x264/0x300 net/batman-adv/send.c:108
 batadv_send_broadcast_skb+0x24/0x30 net/batman-adv/send.c:127
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x3f0/0x4b0 net/batman-adv/bat_iv_ogm.c:1700
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_wor…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/cve-2024-26862</guid>
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