SB2024082223 - NULL pointer dereference in Linux kernel spi driver
Published: August 22, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024082223
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2021-4441)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the zynq_qspi_exec_mem_op() function in drivers/spi/spi-zynq-qspi.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/df14d2bed8e2455878e046e67123d9ecb2e79056
- https://git.kernel.org/stable/c/2efece1368aeee2d2552c7ec36aeb676c4d4c95f
- https://git.kernel.org/stable/c/3c32405d6474a21f7d742828e73c13e326dcae82
- https://git.kernel.org/stable/c/b9dd08cbebe0c593c49bf86d2012a431494e54cb
- https://git.kernel.org/stable/c/ab3824427b848da10e9fe2727f035bbeecae6ff4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.103
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.26
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.182