Vulnerabilities > CVE-2021-47048 - Use After Free vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
In the Linux kernel, the following vulnerability has been resolved: spi: spi-zynqmp-gqspi: fix use-after-free in zynqmp_qspi_exec_op When handling op->addr, it is using the buffer "tmpbuf" which has been freed. This will trigger a use-after-free KASAN warning. Let's use temporary variables to store op->addr.val and op->cmd.opcode to fix this issue.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://git.kernel.org/stable/c/1231279389b5e638bc3b66b9741c94077aed4b5a
- https://git.kernel.org/stable/c/1231279389b5e638bc3b66b9741c94077aed4b5a
- https://git.kernel.org/stable/c/23269ac9f123eca3aea7682d3345c02e71ed696c
- https://git.kernel.org/stable/c/23269ac9f123eca3aea7682d3345c02e71ed696c
- https://git.kernel.org/stable/c/a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58
- https://git.kernel.org/stable/c/a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58
- https://git.kernel.org/stable/c/d67e0d6bd92ebbb0294e7062bbf5cdc773764e62
- https://git.kernel.org/stable/c/d67e0d6bd92ebbb0294e7062bbf5cdc773764e62