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CVE-2024-26861

wireguard: receive: annotate data-race around receiving_counter.counter

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.7, 5.10.214, 5.15.153, 6.1.83, 6.6.23, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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 ...

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From a9e90d9931f3a474f04bab782ccd9d77904941e9 · fixed in f87884e0dffd61b47e58bc6e1e2f6843c212b0cc; From a9e90d9931f3a474f04bab782ccd9d77904941e9 · fixed in d691be84ab898cf136a35176eaf2f8fc116563f0; From a9e90d9931f3a474f04bab782ccd9d77904941e9 · fixed in 45a83b220c83e3c326513269afbf69ae6fc65cce; From a9e90d9931f3a474f04bab782ccd9d77904941e9 · fixed in 78739d72f16b2d7d549f713f1dfebd678d32484b; From a9e90d9931f3a474f04bab782ccd9d77904941e9 · fixed in 3f94da807fe1668b9830f0eefbbf7e887b0a7bc6; From a9e90d9931f3a474f04bab782ccd9d77904941e9 · fixed in fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed; From a9e90d9931f3a474f04bab782ccd9d77904941e9 · fixed in bba045dc4d996d03dce6fe45726e78a1a1f6d4c3; From 5.6.16 · fixed in 5.7

  • Linux Linux

    5.7

  • KernelLinux

    From 5.7.0 · fixed in 5.10.214; From 5.11.0 · fixed in 5.15.153; From 5.16.0 · fixed in 6.1.83; From 6.2.0 · fixed in 6.6.23; From 6.7.0 · fixed in 6.7.11; From 6.8.0 · fixed in 6.8.2

References 7

git.kernel.org