CVE-2022-48830

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-48830
In the Linux kernel, the following vulnerability has been resolved: can: isotp: fix potential CAN frame reception race in isotp_rcv() When receiving a CAN frame the current code logic does not consider concurrently receiving processes which do not show up in real world usage. Ziyang Xuan writes: The following syz problem is one of the scenarios. so->rx.len is changed by isotp_rcv_ff() during isotp_rcv_cf(), so->rx.len equals 0 before alloc_skb() and equals 4096 after alloc_skb(). That will trigger skb_over_panic() in skb_put(). ======================================================= CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.16.0-rc8-syzkaller #0 RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:113 Call Trace: <TASK> skb_over_panic net/core/skbuff.c:118 [inline] skb_put.cold+0x24/0x24 net/core/skbuff.c:1990 isotp_rcv_cf net/can/isotp.c:570 [inline] isotp_rcv+0xa38/0x1e30 net/can/isotp.c:668 deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x445/0x8d0 net/can/af_can.c:635 can_receive+0x31d/0x580 net/can/af_can.c:665 can_rcv+0x120/0x1c0 net/can/af_can.c:696 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5465 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5579 Therefore we make sure the state changes and data structures stay consistent at CAN frame reception time by adding a spin_lock in isotp_rcv(). This fixes the issue reported by syzkaller but does not affect real world operation.

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/5b068f33bc8acfcfd5ea7992a2dafb30d89bad30 Patch
https://git.kernel.org/stable/c/7b53d2204ce79b27a878074a77d64f40ec21dbca Patch
https://git.kernel.org/stable/c/7c759040c1dd03954f650f147ae7175476d51314 Patch
https://git.kernel.org/stable/c/f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3 Patch
https://git.kernel.org/stable/c/5b068f33bc8acfcfd5ea7992a2dafb30d89bad30 Patch
https://git.kernel.org/stable/c/7b53d2204ce79b27a878074a77d64f40ec21dbca Patch
https://git.kernel.org/stable/c/7c759040c1dd03954f650f147ae7175476d51314 Patch
https://git.kernel.org/stable/c/f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*
History

25 Sep 2025, 19:22

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.7
References () https://git.kernel.org/stable/c/5b068f33bc8acfcfd5ea7992a2dafb30d89bad30 - () https://git.kernel.org/stable/c/5b068f33bc8acfcfd5ea7992a2dafb30d89bad30 - Patch
References () https://git.kernel.org/stable/c/7b53d2204ce79b27a878074a77d64f40ec21dbca - () https://git.kernel.org/stable/c/7b53d2204ce79b27a878074a77d64f40ec21dbca - Patch
References () https://git.kernel.org/stable/c/7c759040c1dd03954f650f147ae7175476d51314 - () https://git.kernel.org/stable/c/7c759040c1dd03954f650f147ae7175476d51314 - Patch
References () https://git.kernel.org/stable/c/f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3 - () https://git.kernel.org/stable/c/f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3 - Patch
CPE cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-362

21 Nov 2024, 07:34

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: isotp: corrige una posible ejecución de recepción de tramas CAN en isotp_rcv() Al recibir una trama CAN, la lógica del código actual no considera la recepción simultánea de procesos que no aparecen en el uso en el mundo real. Ziyang Xuan escribe: El siguiente problema syz es uno de los escenarios. so-&gt;rx.len es cambiado por isotp_rcv_ff() durante isotp_rcv_cf(), so-&gt;rx.len es igual a 0 antes de alloc_skb() y es igual a 4096 después de alloc_skb(). Eso activará skb_over_panic() en skb_put(). ==================================================== ===== CPU: 1 PID: 19 Comm: ksoftirqd/1 No contaminado 5.16.0-rc8-syzkaller #0 RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:113 Seguimiento de llamadas: skb_over_panic net/core/skbuff.c:118 [en línea] skb_put.cold+0x24/0x24 net/core/skbuff.c:1990 isotp_rcv_cf net/can/isotp.c:570 [en línea] isotp_rcv+0xa38/0x1e30 net/ can/isotp.c:668 entregar net/can/af_can.c:574 [en línea] can_rcv_filter+0x445/0x8d0 net/can/af_can.c:635 can_receive+0x31d/0x580 net/can/af_can.c:665 can_rcv+ 0x120/0x1c0 net/can/af_can.c:696 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5465 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5579 Por lo tanto, nos aseguramos de que los cambios de estado y las estructuras de datos mantenga la coherencia en el momento de recepción de la trama CAN agregando un spin_lock en isotp_rcv(). Esto soluciona el problema informado por syzkaller pero no afecta el funcionamiento en el mundo real.
References () https://git.kernel.org/stable/c/5b068f33bc8acfcfd5ea7992a2dafb30d89bad30 - () https://git.kernel.org/stable/c/5b068f33bc8acfcfd5ea7992a2dafb30d89bad30 -
References () https://git.kernel.org/stable/c/7b53d2204ce79b27a878074a77d64f40ec21dbca - () https://git.kernel.org/stable/c/7b53d2204ce79b27a878074a77d64f40ec21dbca -
References () https://git.kernel.org/stable/c/7c759040c1dd03954f650f147ae7175476d51314 - () https://git.kernel.org/stable/c/7c759040c1dd03954f650f147ae7175476d51314 -
References () https://git.kernel.org/stable/c/f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3 - () https://git.kernel.org/stable/c/f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3 -

16 Jul 2024, 12:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-07-16 12:15

Updated : 2025-09-25 19:22

NVD link : CVE-2022-48830

Mitre link : CVE-2022-48830

CVE.ORG link : CVE-2022-48830

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')