{"id":"CVE-2024-26862","summary":"packet: annotate data-races around ignore_outgoing","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npacket: annotate data-races around ignore_outgoing\n\nignore_outgoing is read locklessly from dev_queue_xmit_nit()\nand packet_getsockopt()\n\nAdd appropriate READ_ONCE()/WRITE_ONCE() annotations.\n\nsyzbot reported:\n\nBUG: KCSAN: data-race in dev_queue_xmit_nit / packet_setsockopt\n\nwrite to 0xffff888107804542 of 1 bytes by task 22618 on cpu 0:\n packet_setsockopt+0xd83/0xfd0 net/packet/af_packet.c:4003\n do_sock_setsockopt net/socket.c:2311 [inline]\n __sys_setsockopt+0x1d8/0x250 net/socket.c:2334\n __do_sys_setsockopt net/socket.c:2343 [inline]\n __se_sys_setsockopt net/socket.c:2340 [inline]\n __x64_sys_setsockopt+0x66/0x80 net/socket.c:2340\n do_syscall_64+0xd3/0x1d0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\n\nread to 0xffff888107804542 of 1 bytes by task 27 on cpu 1:\n dev_queue_xmit_nit+0x82/0x620 net/core/dev.c:2248\n xmit_one net/core/dev.c:3527 [inline]\n dev_hard_start_xmit+0xcc/0x3f0 net/core/dev.c:3547\n __dev_queue_xmit+0xf24/0x1dd0 net/core/dev.c:4335\n dev_queue_xmit include/linux/netdevice.h:3091 [inline]\n batadv_send_skb_packet+0x264/0x300 net/batman-adv/send.c:108\n batadv_send_broadcast_skb+0x24/0x30 net/batman-adv/send.c:127\n batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline]\n batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]\n batadv_iv_send_outstanding_bat_ogm_packet+0x3f0/0x4b0 net/batman-adv/bat_iv_ogm.c:1700\n process_one_work kernel/workqueue.c:3254 [inline]\n process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335\n worker_thread+0x526/0x730 kernel/workqueue.c:3416\n kthread+0x1d1/0x210 kernel/kthread.c:388\n ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n\nvalue changed: 0x00 -\u003e 0x01\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 27 Comm: kworker/u8:1 Tainted: G        W          6.8.0-syzkaller-08073-g480e035fc4c7 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\nWorkqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet","modified":"2026-03-20T12:35:16.121473Z","published":"2024-04-17T10:27:25.634Z","related":["SUSE-SU-2024:1642-1","SUSE-SU-2024:1644-1","SUSE-SU-2024:1645-1","SUSE-SU-2024:1650-1","SUSE-SU-2024:1659-1","SUSE-SU-2024:1663-1","SUSE-SU-2024:2011-1","SUSE-SU-2024:2135-1","SUSE-SU-2024:2189-1","SUSE-SU-2024:2203-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1","openSUSE-SU-2024:13959-1","openSUSE-SU-2025:14705-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26862.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2c02c5059c78a52d170bdee4a369b470de6deb37"},{"type":"WEB","url":"https://git.kernel.org/stable/c/68e84120319d4fc298fcdb14cf0bea6a0f64ffbd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ebfad33161afacb3e1e59ed1c2feefef70f9f97"},{"type":"WEB","url":"https://git.kernel.org/stable/c/84c510411e321caff3c07e6cd0f917f06633cfc0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8b1e273c6afcf00d3c40a54ada7d6aac1b503b97"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d35b62c224e70797f8a1c37fe9bc4b3e294b7560"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee413f30ec4fe94a0bdf32c8f042cb06fa913234"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef7eed7e11d23337310ecc2c014ecaeea52719c5"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26862.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-26862"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"fa788d986a3aac5069378ed04697bd06f83d3488"},{"fixed":"84c510411e321caff3c07e6cd0f917f06633cfc0"},{"fixed":"68e84120319d4fc298fcdb14cf0bea6a0f64ffbd"},{"fixed":"d35b62c224e70797f8a1c37fe9bc4b3e294b7560"},{"fixed":"ef7eed7e11d23337310ecc2c014ecaeea52719c5"},{"fixed":"2c02c5059c78a52d170bdee4a369b470de6deb37"},{"fixed":"ee413f30ec4fe94a0bdf32c8f042cb06fa913234"},{"fixed":"8b1e273c6afcf00d3c40a54ada7d6aac1b503b97"},{"fixed":"6ebfad33161afacb3e1e59ed1c2feefef70f9f97"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-26862.json"}}],"schema_version":"1.7.5"}