CVE-2021-47048
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1231279389b5e638bc3b66b9741c94077aed4b5aPatch
- https://git.kernel.org/stable/c/23269ac9f123eca3aea7682d3345c02e71ed696cPatch
- https://git.kernel.org/stable/c/a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58Patch
- https://git.kernel.org/stable/c/d67e0d6bd92ebbb0294e7062bbf5cdc773764e62Patch
- https://git.kernel.org/stable/c/1231279389b5e638bc3b66b9741c94077aed4b5aPatch
- https://git.kernel.org/stable/c/23269ac9f123eca3aea7682d3345c02e71ed696cPatch
- https://git.kernel.org/stable/c/a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58Patch
- https://git.kernel.org/stable/c/d67e0d6bd92ebbb0294e7062bbf5cdc773764e62Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.