// For flags

CVE-2023-52700

tipc: fix kernel warning when sending SYN message

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

In the Linux kernel, the following vulnerability has been resolved:

tipc: fix kernel warning when sending SYN message

When sending a SYN message, this kernel stack trace is observed:

...
[ 13.396352] RIP: 0010:_copy_from_iter+0xb4/0x550
...
[ 13.398494] Call Trace:
[ 13.398630] <TASK>
[ 13.398630] ? __alloc_skb+0xed/0x1a0
[ 13.398630] tipc_msg_build+0x12c/0x670 [tipc]
[ 13.398630] ? shmem_add_to_page_cache.isra.71+0x151/0x290
[ 13.398630] __tipc_sendmsg+0x2d1/0x710 [tipc]
[ 13.398630] ? tipc_connect+0x1d9/0x230 [tipc]
[ 13.398630] ? __local_bh_enable_ip+0x37/0x80
[ 13.398630] tipc_connect+0x1d9/0x230 [tipc]
[ 13.398630] ? __sys_connect+0x9f/0xd0
[ 13.398630] __sys_connect+0x9f/0xd0
[ 13.398630] ? preempt_count_add+0x4d/0xa0
[ 13.398630] ? fpregs_assert_state_consistent+0x22/0x50
[ 13.398630] __x64_sys_connect+0x16/0x20
[ 13.398630] do_syscall_64+0x42/0x90
[ 13.398630] entry_SYSCALL_64_after_hwframe+0x63/0xcd

It is because commit a41dad905e5a ("iov_iter: saner checks for attempt
to copy to/from iterator") has introduced sanity check for copying
from/to iov iterator. Lacking of copy direction from the iterator
viewpoint would lead to kernel stack trace like above.

This commit fixes this issue by initializing the iov iterator with
the correct copy direction when sending SYN or ACK without data.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tipc: corrige la advertencia del kernel al enviar un mensaje SYN Al enviar un mensaje SYN, se observa este seguimiento de la pila del kernel: ... [ 13.396352] RIP: 0010:_copy_from_iter+0xb4/0x550 . .. [ 13.398494] Seguimiento de llamadas: [ 13.398630] [ 13.398630] ? __alloc_skb+0xed/0x1a0 [13.398630] tipc_msg_build+0x12c/0x670 [tipc] [13.398630]? shmem_add_to_page_cache.isra.71+0x151/0x290 [13.398630] __tipc_sendmsg+0x2d1/0x710 [tipc] [13.398630] ? tipc_connect+0x1d9/0x230 [tipc] [13.398630]? __local_bh_enable_ip+0x37/0x80 [13.398630] tipc_connect+0x1d9/0x230 [tipc] [13.398630]? __sys_connect+0x9f/0xd0 [ 13.398630] __sys_connect+0x9f/0xd0 [ 13.398630] ? preempt_count_add+0x4d/0xa0 [13.398630]? fpregs_assert_state_consistent+0x22/0x50 [ 13.398630] __x64_sys_connect+0x16/0x20 [ 13.398630] do_syscall_64+0x42/0x90 [ 13.398630] Entry_SYSCALL_64_after_hwframe+0x63/0xcd Es porque la confirmación 41dad905e5a ("iov_iter: comprobaciones más sensatas para intentar copiar hacia/desde el iterador") ha introducido una verificación de cordura para copiar desde/hacia el iterador iov. La falta de dirección de copia desde el punto de vista del iterador conduciría a un seguimiento de la pila del kernel como se muestra arriba. Esta confirmación soluciona este problema al inicializar el iterador iov con la dirección de copia correcta al enviar SYN o ACK sin datos.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-03-07 CVE Reserved
  • 2024-05-21 CVE Published
  • 2024-05-22 EPSS Updated
  • 2024-12-19 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
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"
>= 4.0 < 6.1.13
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0 < 6.1.13"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 4.0 < 6.2
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0 < 6.2"
en
Affected