CVE-2022-1198

Description

A use-after-free vulnerabilitity was discovered in drivers/net/hamradio/6pack.c of linux that allows an attacker to crash linux kernel by simulating ax25 device using 6pack driver from user space.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.13%• Percentile: 33%

Techniques & Countermeasures

• CWE-416•Use After Free

  The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

• linux•linux_kernel

  < 5.17 | 5.17:rc1 | 5.17:rc2 | 5.17:rc3 | 5.17:rc4 | 5.17:rc5

• redhat•enterprise_linux

  9.0

References (4)

• https://bugzilla.redhat.com/show_bug.cgi?id=2070689
• https://www.openwall.com/lists/oss-security/2022/04/02/3
• https://github.com/torvalds/linux/commit/efe4186e6a1b54bf38b9e05450d43b0da1fd7739
• https://access.redhat.com/security/cve/CVE-2022-1198