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CVE-2021-47048

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

HIGH
7.8
CVSS Score
Published: February 28, 2024 at 08:13 AM UTC
Updated: August 5, 2026 at 09:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.10 ≤ v < 5.10.375.10 ≤ v < 5.11.215.10 ≤ v < 5.12.45.10 ≤ v < 5.135.11 ≤ v < 5.11.215.12 ≤ v < 5.12.41c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e5.10
Vendor states this is fixed in 1231279389b5e638bc3b66b9741c94077aed4b5a (fixed)
Vendor states this is fixed in 23269ac9f123eca3aea7682d3345c02e71ed696c (fixed)
Vendor states this is fixed in a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58 (fixed)
Vendor states this is fixed in d67e0d6bd92ebbb0294e7062bbf5cdc773764e62 (fixed)
Vendor states this is fixed in 5.10 (unaffected)
Vendor states this is fixed in 5.10.37 (unaffected)
Vendor states this is fixed in 5.11.21 (unaffected)
Vendor states this is fixed in 5.12.4 (unaffected)
Vendor states this is fixed in 5.13 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/1231279389b5e638bc3b66b9741c94077aed4b5a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/23269ac9f123eca3aea7682d3345c02e71ed696c
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d67e0d6bd92ebbb0294e7062bbf5cdc773764e62

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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