CVE-2024-21803 - Use After Free

Severity

78%

Complexity

18%

Confidentiality

98%

Use After Free vulnerability in Linux Linux kernel kernel on Linux, x86, ARM (bluetooth modules) allows Local Execution of Code. This vulnerability is associated with program files https://gitee.Com/anolis/cloud-kernel/blob/devel-5.10/net/bluetooth/af_bluetooth.C. This issue affects Linux kernel: from v2.6.12-rc2 before v6.8-rc1.

CVSS 3.1 Base Score 7.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Demo Examples

Use After Free

CWE-416

The following example demonstrates the weakness.


               
}
free(buf3R2);

Use After Free

CWE-416

The following code illustrates a use after free error:


               
}
free(ptr);
logError("operation aborted before commit", ptr);

When an error occurs, the pointer is immediately freed. However, this pointer is later incorrectly used in the logError function.

Overview

First reported 1 year ago

2024-01-30 08:15:00

Last updated 3 months ago

2024-11-21 08:55:00

Affected Software

Linux Kernel 2.6.12 Release Candidate 4

2.6.12

Linux Kernel 2.6.12 Release Candidate 5

2.6.12

Linux Kernel 2.6.12 Release Candidate 2

2.6.12

Linux Kernel 2.6.12 Release Candidate 3

2.6.12

Linux Kernel 2.6.12 Release Candidate 6

2.6.12

Linux Kernel

References

https://bugzilla.openanolis.cn/show_bug.cgi?id=8081

https://bugzilla.openanolis.cn/show_bug.cgi?id=8081

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