{"id":"CVE-2024-26861","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwireguard: receive: annotate data-race around receiving_counter.counter\n\nSyzkaller with KCSAN identified a data-race issue when accessing\nkeypair->receiving_counter.cou…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwireguard: receive: annotate data-race around receiving_counter.counter\n\nSyzkaller with KCSAN identified a data-race issue when accessing\nkeypair->receiving_counter.cou…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-362"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.7, < 5.10.214","linux_kernel >= 5.11, < 5.15.153","linux_kernel >= 5.16, < 6.1.83","linux_kernel >= 6.2, < 6.6.23","linux_kernel >= 6.7, < 6.7.11","linux_kernel >= 6.8, < 6.8.2","debian_linux = 10.0"],"patched":["linux_kernel 6.8.2"],"published":"2024-04-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:17:26.447","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-26861","references":[{"url":"https://git.kernel.org/stable/c/3f94da807fe1668b9830f0eefbbf7e887b0a7bc6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/45a83b220c83e3c326513269afbf69ae6fc65cce","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/78739d72f16b2d7d549f713f1dfebd678d32484b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bba045dc4d996d03dce6fe45726e78a1a1f6d4c3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d691be84ab898cf136a35176eaf2f8fc116563f0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f87884e0dffd61b47e58bc6e1e2f6843c212b0cc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3f94da807fe1668b9830f0eefbbf7e887b0a7bc6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/45a83b220c83e3c326513269afbf69ae6fc65cce","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/78739d72f16b2d7d549f713f1dfebd678d32484b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/bba045dc4d996d03dce6fe45726e78a1a1f6d4c3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d691be84ab898cf136a35176eaf2f8fc116563f0","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/f87884e0dffd61b47e58bc6e1e2f6843c212b0cc","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00177,"epssPercentile":0.07254,"ingestedAt":"2026-10-15T03:30:12.653Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-09-10T15:48:32.233125Z"},"slug":"CVE-2024-26861","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwireguard: receive: annotate data-race around receiving_counter.counter\n\nSyzkaller with KCSAN identified a data-race issue when accessing\nkeypair->receiving_counter.counter. Use READ_ONCE() and WRITE_ONCE()\nannotations to mark the data race as intentional.\n\n    BUG: KCSAN: data-race in wg_packet_decrypt_worker / wg_packet_rx_poll\n\n    write to 0xffff888107765888 of 8 bytes by interrupt on cpu 0:\n     counter_validate drivers/net/wireguard/receive.c:321 [inline]\n     wg_packet_rx_poll+0x3ac/0xf00 drivers/net/wireguard/receive.c:461\n     __napi_poll+0x60/0x3b0 net/core/dev.c:6536\n     napi_poll net/core/dev.c:6605 [inline]\n     net_rx_action+0x32b/0x750 net/core/dev.c:6738\n     __do_softirq+0xc4/0x279 kernel/softirq.c:553\n     do_softirq+0x5e/0x90 kernel/softirq.c:454\n     __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:381\n     __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]\n     _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210\n     spin_unlock_bh include/linux/spinlock.h:396 [inline]\n     ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]\n     wg_packet_decrypt_worker+0x6c5/0x700 drivers/net/wireguard/receive.c:499\n     process_one_work kernel/workqueue.c:2633 [inline]\n     ...\n\n    read to 0xffff888107765888 of 8 bytes by task 3196 on cpu 1:\n     decrypt_packet drivers/net/wireguard/receive.c:252 [inline]\n     wg_packet_decrypt_worker+0x220/0x700 drivers/net/wireguard/receive.c:501\n     process_one_work kernel/workqueue.c:2633 [inline]\n     process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2706\n     worker_thread+0x525/0x730 kernel/workqueue.c:2787\n     ...\n\n## Affected\n\n- `linux_kernel >= 5.7, < 5.10.214`\n- `linux_kernel >= 5.11, < 5.15.153`\n- `linux_kernel >= 5.16, < 6.1.83`\n- `linux_kernel >= 6.2, < 6.6.23`\n- `linux_kernel >= 6.7, < 6.7.11`\n- `linux_kernel >= 6.8, < 6.8.2`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.8.2`","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}