#VU93156 Buffer overflow in Linux kernel - CVE-2021-47203
Published: June 24, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93156
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47203
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the lpfc_drain_txq() function in drivers/scsi/lpfc/lpfc_sli.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/ad4776b5eb2e58af1226847fcd3b4f6d051674dd
- https://git.kernel.org/stable/c/ec70d80a8642900086447ba0cdc79e3f44d42e8f
- https://git.kernel.org/stable/c/f05a0191b90156e539cccc189b9d87ca2a4d9305
- https://git.kernel.org/stable/c/b291d147d0268e93ad866f8bc820ea14497abc9b
- https://git.kernel.org/stable/c/16bcbfb56d759c25665f786e33ec633b9508a08f
- https://git.kernel.org/stable/c/c097bd5a59162156d9c2077a2f58732ffbaa9fca
- https://git.kernel.org/stable/c/814d3610c4ce86e8cf285b2cdac0057a42e82de5
- https://git.kernel.org/stable/c/99154581b05c8fb22607afb7c3d66c1bace6aa5d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.256
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.218
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.293
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.291
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.82
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.162