CVE Vulnerabilities

CVE-2021-41043

Use After Free

Published: Jan 05, 2022 | Modified: Nov 21, 2024
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
5.5 MODERATE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

Use after free in tcpslice triggers AddressSanitizer, no other confirmed impact.

Weakness

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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.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 Software

Name Vendor Start Version End Version
Tcpslice Tcpdump * 1.5 (excluding)
Red Hat Enterprise Linux 8 RedHat tcpdump-14:4.9.3-3.el8_9.1 *
Red Hat Enterprise Linux 8.6 Extended Update Support RedHat tcpdump-14:4.9.3-3.el8_6.1 *
Red Hat Enterprise Linux 8.8 Extended Update Support RedHat tcpdump-14:4.9.3-3.el8_8.1 *
Red Hat Enterprise Linux 9 RedHat tcpdump-14:4.99.0-9.el9 *
Red Hat Enterprise Linux 9.2 Extended Update Support RedHat tcpdump-14:4.99.0-6.el9_2.1 *
Tcpslice Ubuntu bionic *
Tcpslice Ubuntu focal *
Tcpslice Ubuntu hirsute *
Tcpslice Ubuntu impish *
Tcpslice Ubuntu kinetic *
Tcpslice Ubuntu lunar *
Tcpslice Ubuntu mantic *
Tcpslice Ubuntu oracular *
Tcpslice Ubuntu trusty *
Tcpslice Ubuntu xenial *

Potential Mitigations

References