#VU93669 Buffer overflow in Linux kernel - CVE-2021-47047
Published: July 2, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93669
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-2021-47047
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 zynqmp_qspi_irq(), zynqmp_qspi_setuprxdma(), zynqmp_qspi_write_op(), zynqmp_qspi_exec_op() and zynqmp_qspi_probe() functions in drivers/spi/spi-zynqmp-gqspi.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/5980a3b9c933408bc22b0e349b78c3ebd7cbf880
- https://git.kernel.org/stable/c/c26c026eb496261dbc0adbf606cc81989cd2038c
- https://git.kernel.org/stable/c/bad5a23cf2b477fa78b85fd392736dae09a1e818
- https://git.kernel.org/stable/c/126bdb606fd2802454e6048caef1be3e25dd121e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13