CVE-2024-38566

bpf: Fix verifier assumptions about socket->sk

Severity Score

"-"

*CVSS v-

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:

bpf: Fix verifier assumptions about socket->sk

The verifier assumes that 'sk' field in 'struct socket' is valid
and non-NULL when 'socket' pointer itself is trusted and non-NULL.
That may not be the case when socket was just created and
passed to LSM socket_accept hook.
Fix this verifier assumption and adjust tests.

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: bpf: corrige las suposiciones del verificador sobre socket->sk. El verificador asume que el campo 'sk' en 'struct socket' es válido y no NULL cuando el puntero 'socket' en sí es confiable y no NULL. Puede que ese no sea el caso cuando el socket se acaba de crear y se pasó al gancho LSM socket_accept. Corrija esta suposición del verificador y ajuste las pruebas.

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-06-18 CVE Reserved
2024-06-19 CVE Published
2024-06-20 EPSS Updated
2024-09-11 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (5)

URL	Tag	Source
https://git.kernel.org/stable/c/6fcd486b3a0a628c41f12b3a7329a18a2c74b351	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/39f8a29330f433000e716eefc4b9abda05b71a82	2024-06-12
https://git.kernel.org/stable/c/6f5ae91172a93abac9720ba94edf3ec8f4d7f24f	2024-05-30
https://git.kernel.org/stable/c/c58ccdd2483a1d990748cdaf94206b5d5986a001	2024-05-30
https://git.kernel.org/stable/c/0db63c0b86e981a1e97d2596d64ceceba1a5470e	2024-04-29

URL	Date	SRC

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"				>= 6.4 < 6.6.33 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.4 < 6.6.33"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.4 < 6.8.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.4 < 6.8.12"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.4 < 6.9.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.4 < 6.9.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.4 < 6.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.4 < 6.10"		en		Affected