{"id":"CVE-2024-26862","state":"PUBLISHED","title":"packet: annotate data-races around ignore_outgoing","description":"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 -> 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","publishedAt":"2024-04-17T10:27:25.634Z","updatedAt":"2026-05-11T20:05:34.314Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"84c510411e321caff3c07e6cd0f917f06633cfc0","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"68e84120319d4fc298fcdb14cf0bea6a0f64ffbd","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"d35b62c224e70797f8a1c37fe9bc4b3e294b7560","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"ef7eed7e11d23337310ecc2c014ecaeea52719c5","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"2c02c5059c78a52d170bdee4a369b470de6deb37","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"ee413f30ec4fe94a0bdf32c8f042cb06fa913234","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"8b1e273c6afcf00d3c40a54ada7d6aac1b503b97","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"6ebfad33161afacb3e1e59ed1c2feefef70f9f97","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/dev.c","net/packet/af_packet.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.273","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.214","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.153","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.83","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/dev.c","net/packet/af_packet.c"]}],"references":["https://git.kernel.org/stable/c/84c510411e321caff3c07e6cd0f917f06633cfc0","https://git.kernel.org/stable/c/68e84120319d4fc298fcdb14cf0bea6a0f64ffbd","https://git.kernel.org/stable/c/d35b62c224e70797f8a1c37fe9bc4b3e294b7560","https://git.kernel.org/stable/c/ef7eed7e11d23337310ecc2c014ecaeea52719c5","https://git.kernel.org/stable/c/2c02c5059c78a52d170bdee4a369b470de6deb37","https://git.kernel.org/stable/c/ee413f30ec4fe94a0bdf32c8f042cb06fa913234","https://git.kernel.org/stable/c/8b1e273c6afcf00d3c40a54ada7d6aac1b503b97","https://git.kernel.org/stable/c/6ebfad33161afacb3e1e59ed1c2feefef70f9f97","https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26862.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26862","state":"PUBLISHED","datePublished":"2024-04-17T10:27:25.634Z","dateUpdated":"2026-05-11T20:05:34.314Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.184Z"},"containers":{"cna":{"title":"packet: annotate data-races around ignore_outgoing","descriptions":[{"lang":"en","value":"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 -> 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"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"84c510411e321caff3c07e6cd0f917f06633cfc0","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"68e84120319d4fc298fcdb14cf0bea6a0f64ffbd","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"d35b62c224e70797f8a1c37fe9bc4b3e294b7560","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"ef7eed7e11d23337310ecc2c014ecaeea52719c5","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"2c02c5059c78a52d170bdee4a369b470de6deb37","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"ee413f30ec4fe94a0bdf32c8f042cb06fa913234","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"8b1e273c6afcf00d3c40a54ada7d6aac1b503b97","versionType":"git"},{"version":"fa788d986a3aac5069378ed04697bd06f83d3488","status":"affected","lessThan":"6ebfad33161afacb3e1e59ed1c2feefef70f9f97","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/dev.c","net/packet/af_packet.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.273","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.214","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.153","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.83","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/dev.c","net/packet/af_packet.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/84c510411e321caff3c07e6cd0f917f06633cfc0"},{"url":"https://git.kernel.org/stable/c/68e84120319d4fc298fcdb14cf0bea6a0f64ffbd"},{"url":"https://git.kernel.org/stable/c/d35b62c224e70797f8a1c37fe9bc4b3e294b7560"},{"url":"https://git.kernel.org/stable/c/ef7eed7e11d23337310ecc2c014ecaeea52719c5"},{"url":"https://git.kernel.org/stable/c/2c02c5059c78a52d170bdee4a369b470de6deb37"},{"url":"https://git.kernel.org/stable/c/ee413f30ec4fe94a0bdf32c8f042cb06fa913234"},{"url":"https://git.kernel.org/stable/c/8b1e273c6afcf00d3c40a54ada7d6aac1b503b97"},{"url":"https://git.kernel.org/stable/c/6ebfad33161afacb3e1e59ed1c2feefef70f9f97"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:05:34.314Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.10.214"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.15.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.1.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.6.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.8.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA 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