{"id":"CVE-2024-26861","state":"PUBLISHED","title":"wireguard: receive: annotate data-race around receiving_counter.counter","description":"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.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     ...","publishedAt":"2024-04-17T10:27:24.980Z","updatedAt":"2026-10-15T00:38:52.595Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"f87884e0dffd61b47e58bc6e1e2f6843c212b0cc","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"d691be84ab898cf136a35176eaf2f8fc116563f0","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"45a83b220c83e3c326513269afbf69ae6fc65cce","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"78739d72f16b2d7d549f713f1dfebd678d32484b","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"3f94da807fe1668b9830f0eefbbf7e887b0a7bc6","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"bba045dc4d996d03dce6fe45726e78a1a1f6d4c3","versionType":"git"},{"version":"4a7939808afdc57ecaeb72d049e2985321a1e44e","status":"affected","versionType":"git"},{"version":"5.6.16","status":"affected","lessThan":"5.7","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireguard/receive.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.7","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":["drivers/net/wireguard/receive.c"]}],"references":["https://git.kernel.org/stable/c/f87884e0dffd61b47e58bc6e1e2f6843c212b0cc","https://git.kernel.org/stable/c/d691be84ab898cf136a35176eaf2f8fc116563f0","https://git.kernel.org/stable/c/45a83b220c83e3c326513269afbf69ae6fc65cce","https://git.kernel.org/stable/c/78739d72f16b2d7d549f713f1dfebd678d32484b","https://git.kernel.org/stable/c/3f94da807fe1668b9830f0eefbbf7e887b0a7bc6","https://git.kernel.org/stable/c/fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed","https://git.kernel.org/stable/c/bba045dc4d996d03dce6fe45726e78a1a1f6d4c3","https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","https://cert-portal.siemens.com/productcert/html/ssa-265688.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26861.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26861","state":"PUBLISHED","datePublished":"2024-04-17T10:27:24.980Z","dateUpdated":"2026-10-15T00:38:52.595Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.184Z"},"containers":{"cna":{"title":"wireguard: receive: annotate data-race around receiving_counter.counter","descriptions":[{"lang":"en","value":"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.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     ..."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"f87884e0dffd61b47e58bc6e1e2f6843c212b0cc","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"d691be84ab898cf136a35176eaf2f8fc116563f0","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"45a83b220c83e3c326513269afbf69ae6fc65cce","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"78739d72f16b2d7d549f713f1dfebd678d32484b","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"3f94da807fe1668b9830f0eefbbf7e887b0a7bc6","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed","versionType":"git"},{"version":"a9e90d9931f3a474f04bab782ccd9d77904941e9","status":"affected","lessThan":"bba045dc4d996d03dce6fe45726e78a1a1f6d4c3","versionType":"git"},{"version":"4a7939808afdc57ecaeb72d049e2985321a1e44e","status":"affected","versionType":"git"},{"version":"5.6.16","status":"affected","lessThan":"5.7","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireguard/receive.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.7","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":["drivers/net/wireguard/receive.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f87884e0dffd61b47e58bc6e1e2f6843c212b0cc"},{"url":"https://git.kernel.org/stable/c/d691be84ab898cf136a35176eaf2f8fc116563f0"},{"url":"https://git.kernel.org/stable/c/45a83b220c83e3c326513269afbf69ae6fc65cce"},{"url":"https://git.kernel.org/stable/c/78739d72f16b2d7d549f713f1dfebd678d32484b"},{"url":"https://git.kernel.org/stable/c/3f94da807fe1668b9830f0eefbbf7e887b0a7bc6"},{"url":"https://git.kernel.org/stable/c/fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed"},{"url":"https://git.kernel.org/stable/c/bba045dc4d996d03dce6fe45726e78a1a1f6d4c3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:39:12.332Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.214"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.6.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.8.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6.16"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE 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