CVE-2024-26861

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

Severity Score

4.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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
...

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: wireguard: recibir: anotar carrera de datos alrededor de recibir_counter.counter Syzkaller con KCSAN identificó un problema de carrera de datos al acceder al par de claves->receiving_counter.counter. Utilice las anotaciones READ_ONCE() y WRITE_ONCE() para marcar la carrera de datos como intencional. ERROR: KCSAN: carrera de datos en wg_packet_decrypt_worker/wg_packet_rx_poll escribir en 0xffff888107765888 de 8 bytes por interrupción en la CPU 0: counter_validate drivers/net/wireguard/receive.c:321 [en línea] wg_packet_rx_poll+0x3ac/0xf00 .c:461 __napi_poll+0x60/0x3b0 net/core/dev.c:6536 napi_poll net/core/dev.c:6605 [en línea] 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 [en línea] _raw_spin_unlock_bh+0x36/0x 40 granos /locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [en línea] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [en línea] wg_packet_decrypt_worker+0x6c5/0x700 drivers/net/wireguard/receive.c:499 Process_one_work kernel/workqueue.c:2633 [en línea] ... leído en 0xffff888107765888 de 8 bytes por tarea 3196 en la CPU 1: decrypt_packet drivers/net/wireguard/receive.c:252 [en línea] wg_packet_decrypt_worker+0x220/0x700 drivers/net /wireguard/receive.c:501 Process_one_work kernel/workqueue.c:2633 [en línea] Process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2706 Workers_thread+0x525/0x730 kernel/workqueue.c:2787 ...

*Credits: N/A

CVSS Scores

Red Hatv3.1 4.1

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-04-17 CVE Published
2024-04-18 EPSS Updated
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CAPEC

References (12)

URL	Tag	Source
https://git.kernel.org/stable/c/a9e90d9931f3a474f04bab782ccd9d77904941e9	Vuln. Introduced
https://git.kernel.org/stable/c/4a7939808afdc57ecaeb72d049e2985321a1e44e	Vuln. Introduced
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/f87884e0dffd61b47e58bc6e1e2f6843c212b0cc	2024-03-26
https://git.kernel.org/stable/c/d691be84ab898cf136a35176eaf2f8fc116563f0	2024-03-26
https://git.kernel.org/stable/c/45a83b220c83e3c326513269afbf69ae6fc65cce	2024-03-26
https://git.kernel.org/stable/c/78739d72f16b2d7d549f713f1dfebd678d32484b	2024-03-26
https://git.kernel.org/stable/c/3f94da807fe1668b9830f0eefbbf7e887b0a7bc6	2024-03-26
https://git.kernel.org/stable/c/fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed	2024-03-26
https://git.kernel.org/stable/c/bba045dc4d996d03dce6fe45726e78a1a1f6d4c3	2024-03-19

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-26861	2024-11-12
https://bugzilla.redhat.com/show_bug.cgi?id=2275729	2024-11-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.7 < 5.10.214 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.10.214"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.7 < 5.15.153 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.15.153"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.7 < 6.1.83 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 6.1.83"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.7 < 6.6.23 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 6.6.23"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.7 < 6.7.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 6.7.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.7 < 6.8.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 6.8.2"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.7 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 6.9"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				5.6.16 Search vendor "Linux" for product "Linux Kernel" and version "5.6.16"		en		Affected