SB20240531173 - Use-after-free in Linux kernel sctp
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531173
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2021-46999)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the sctp_sf_do_dupcook_a() function in net/sctp/sm_statefuns.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/d624f2991b977821375fbd56c91b0c91d456a697
- https://git.kernel.org/stable/c/b1b31948c0af44628e43353828453461bb74098f
- https://git.kernel.org/stable/c/f01988ecf3654f805282dce2d3bb9afe68d2691e
- https://git.kernel.org/stable/c/61b877bad9bb0d82b7d8841be50872557090a704
- https://git.kernel.org/stable/c/0bfd913c2121b3d553bfd52810fe6061d542d625
- https://git.kernel.org/stable/c/35b4f24415c854cd718ccdf38dbea6297f010aae
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.191
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.38
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.120