CVE-2024-26861wireguard: receive: annotate data-race around receiving_counter.counter
Updated under an hour ago ()
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It affects Linux and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: wireguard: receive: annotate data-race around receiving_counter.counter Syzkaller with KCSAN identified a data-race issue when accessing keypair->receiving_counter.counter. Use READ_ONCE() and WRITE_ONCE() annotations to mark the data race as intentional. BUG: KCSAN: data-race in wg_packet_decrypt_worker / wg_packet_rx_poll write to 0xffff888107765888 of 8 bytes by interrupt on cpu 0: counter_validate drivers/net/wireguard/receive.c:321 [inline] wg_packet_rx_poll+0x3ac/0xf00 drivers/net/wireguard/receive.c:461 __napi_poll+0x60/0x3b0 net/core/dev.c:6536 napi_poll net/core/dev.c:6605 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6738 __do_softirq+0xc4/0x279 kernel/softirq.c:553 do_softirq+0x5e/0x90 kernel/softirq.c:454 __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:381 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_decrypt_worker+0x6c5/0x700 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:2633 [inline] ... read to 0xffff888107765888 of 8 bytes by task 3196 on cpu 1: decrypt_packet drivers/net/wireguard/receive.c:252 [inline] wg_packet_decrypt_worker+0x220/0x700 drivers/net/wireguard/receive.c:501 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2706 worker_thread+0x525/0x730 kernel/workqueue.c:2787 ...
- CVSS
- 4.7 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from a9e90d9931f3a474f04bab782ccd9d77904941e9 before f87884e0dffd61b47e58bc6e1e2f6843c212b0cc; from a9e90d9931f3a474f04bab782ccd9d77904941e9 before d691be84ab898cf136a35176eaf2f8fc116563f0; from a9e90d9931f3a474f04bab782ccd9d77904941e9 before 45a83b220c83e3c326513269afbf69ae6fc65cce; from a9e90d9931f3a474f04bab782ccd9d77904941e9 before 78739d72f16b2d7d549f713f1dfebd678d32484b; from a9e90d9931f3a474f04bab782ccd9d77904941e9 before 3f94da807fe1668b9830f0eefbbf7e887b0a7bc6; from a9e90d9931f3a474f04bab782ccd9d77904941e9 before fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed; from a9e90d9931f3a474f04bab782ccd9d77904941e9 before bba045dc4d996d03dce6fe45726e78a1a1f6d4c3; 4a7939808afdc57ecaeb72d049e2985321a1e44e; and 1 more ranges | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1.1 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.7 before 5.10.214; from 5.11 before 5.15.153; from 5.16 before 6.1.83; from 6.2 before 6.6.23; from 6.7 before 6.7.11; from 6.8 before 6.8.2 | NVD |
debian debian_linux debian:debian_linux | 10.0 | NVD |
References
- https://git.kernel.org/stable/c/f87884e0dffd61b47e58bc6e1e2f6843c212b0ccpatch
- https://git.kernel.org/stable/c/d691be84ab898cf136a35176eaf2f8fc116563f0patch
- https://git.kernel.org/stable/c/45a83b220c83e3c326513269afbf69ae6fc65ccepatch
- https://git.kernel.org/stable/c/78739d72f16b2d7d549f713f1dfebd678d32484bpatch
- https://git.kernel.org/stable/c/3f94da807fe1668b9830f0eefbbf7e887b0a7bc6patch
- https://git.kernel.org/stable/c/fdf16de078a97bf14bb8ee2b8d47cc3d3ead09edpatch
- https://git.kernel.org/stable/c/bba045dc4d996d03dce6fe45726e78a1a1f6d4c3patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlmailing-list
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.