CVE-2024-26862

Severity CVSS v4.0:
Pending analysis
Type:
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Publication date:
17/04/2024
Last modified:
03/03/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> packet: annotate data-races around ignore_outgoing<br /> <br /> ignore_outgoing is read locklessly from dev_queue_xmit_nit()<br /> and packet_getsockopt()<br /> <br /> Add appropriate READ_ONCE()/WRITE_ONCE() annotations.<br /> <br /> syzbot reported:<br /> <br /> BUG: KCSAN: data-race in dev_queue_xmit_nit / packet_setsockopt<br /> <br /> write to 0xffff888107804542 of 1 bytes by task 22618 on cpu 0:<br /> packet_setsockopt+0xd83/0xfd0 net/packet/af_packet.c:4003<br /> do_sock_setsockopt net/socket.c:2311 [inline]<br /> __sys_setsockopt+0x1d8/0x250 net/socket.c:2334<br /> __do_sys_setsockopt net/socket.c:2343 [inline]<br /> __se_sys_setsockopt net/socket.c:2340 [inline]<br /> __x64_sys_setsockopt+0x66/0x80 net/socket.c:2340<br /> do_syscall_64+0xd3/0x1d0<br /> entry_SYSCALL_64_after_hwframe+0x6d/0x75<br /> <br /> read to 0xffff888107804542 of 1 bytes by task 27 on cpu 1:<br /> dev_queue_xmit_nit+0x82/0x620 net/core/dev.c:2248<br /> xmit_one net/core/dev.c:3527 [inline]<br /> dev_hard_start_xmit+0xcc/0x3f0 net/core/dev.c:3547<br /> __dev_queue_xmit+0xf24/0x1dd0 net/core/dev.c:4335<br /> dev_queue_xmit include/linux/netdevice.h:3091 [inline]<br /> batadv_send_skb_packet+0x264/0x300 net/batman-adv/send.c:108<br /> batadv_send_broadcast_skb+0x24/0x30 net/batman-adv/send.c:127<br /> batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline]<br /> batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]<br /> batadv_iv_send_outstanding_bat_ogm_packet+0x3f0/0x4b0 net/batman-adv/bat_iv_ogm.c:1700<br /> process_one_work kernel/workqueue.c:3254 [inline]<br /> process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335<br /> worker_thread+0x526/0x730 kernel/workqueue.c:3416<br /> kthread+0x1d1/0x210 kernel/kthread.c:388<br /> ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147<br /> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243<br /> <br /> value changed: 0x00 -&gt; 0x01<br /> <br /> Reported by Kernel Concurrency Sanitizer on:<br /> CPU: 1 PID: 27 Comm: kworker/u8:1 Tainted: G W 6.8.0-syzkaller-08073-g480e035fc4c7 #0<br /> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024<br /> Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.20 (including) 5.4.273 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 (including) 5.10.214 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.153 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.1.83 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.23 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.7.11 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.8 (including) 6.8.2 (excluding)
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*