CVE-2021-47048

spi: spi-zynqmp-gqspi: fix use-after-free in zynqmp_qspi_exec_op

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

28 Feb 2024Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

Linux · Linux

References

https://git.kernel.org/stable/c/1231279389b5e638bc3b66b9741c94077aed4b5a https://git.kernel.org/stable/c/23269ac9f123eca3aea7682d3345c02e71ed696c https://git.kernel.org/stable/c/a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58 https://git.kernel.org/stable/c/d67e0d6bd92ebbb0294e7062bbf5cdc773764e62