Answer in brief
CVE-2024-26861 records a Unknown severity vulnerability in wireguard: receive: annotate data-race around receiving_counter.counter. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 5.7 | Not reported |
| Linux/Linuxgeneric | >=a9e90d9931f3a474f04bab782ccd9d77904941e9 <f87884e0dffd61b47e58bc6e1e2f6843c212b0cc || >=a9e90d9931f3a474f04bab782ccd9d77904941e9 <d691be84ab898cf136a35176eaf2f8fc116563f0 || >=a9e90d9931f3a474f04bab782ccd9d77904941e9 <45a83b220c83e3c326513269afbf69ae6fc65cce || >=a9e90d9931f3a474f04bab782ccd9d77904941e9 <78739d72f16b2d7d549f713f1dfebd678d32484b || >=a9e90d9931f3a474f04bab782ccd9d77904941e9 <3f94da807fe1668b9830f0eefbbf7e887b0a7bc6 || >=a9e90d9931f3a474f04bab782ccd9d77904941e9 <fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed || >=a9e90d9931f3a474f04bab782ccd9d77904941e9 <bba045dc4d996d03dce6fe45726e78a1a1f6d4c3 || 4a7939808afdc57ecaeb72d049e2985321a1e44e || >=5.6.16 <5.7 | f87884e0dffd61b47e58bc6e1e2f6843c212b0cc, d691be84ab898cf136a35176eaf2f8fc116563f0, 45a83b220c83e3c326513269afbf69ae6fc65cce, 78739d72f16b2d7d549f713f1dfebd678d32484b, 3f94da807fe1668b9830f0eefbbf7e887b0a7bc6, fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed, bba045dc4d996d03dce6fe45726e78a1a1f6d4c3, 5.7 |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <V1.1.1 | V1.1.1 |
Published upstream
Apr 17, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
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 ...
Quoted source text, attributed separately from HOL analysis.