In the Linux kernel, the following vulnerability has been resolved:
spi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op()
In zynq_qspi_exec_mem_op(), kzalloc() is directly used in memset(),
which could lead to a NULL pointer dereference on failure of
kzalloc().
Fix this bug by adding a check of tmpbuf.
This bug was found by a static analyzer. The analysis employs
differential checking to identify inconsistent security operations
(e.g., checks or kfrees) between two code paths and confirms that the
inconsistent operations are not recovered in the current function or
the callers, so they constitute bugs.
Note that, as a bug found by static analysis, it can be a false
positive or hard to trigger. Multiple researchers have cross-reviewed
the bug.
Builds with CONFIG_SPI_ZYNQ_QSPI=m show no new warnings,
and our static analyzer no longer warns about this code.
Metrics
Affected Vendors & Products
References
History
Wed, 11 Sep 2024 17:00:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Linux
Linux linux Kernel |
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Weaknesses | CWE-476 | |
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc5:*:*:*:*:*:* |
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Vendors & Products |
Linux
Linux linux Kernel |
Wed, 11 Sep 2024 13:30:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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Thu, 22 Aug 2024 17:00:00 +0000
Type | Values Removed | Values Added |
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References |
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Metrics |
threat_severity
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cvssV3_1
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Thu, 22 Aug 2024 02:00:00 +0000
Type | Values Removed | Values Added |
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Description | In the Linux kernel, the following vulnerability has been resolved: spi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op() In zynq_qspi_exec_mem_op(), kzalloc() is directly used in memset(), which could lead to a NULL pointer dereference on failure of kzalloc(). Fix this bug by adding a check of tmpbuf. This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs. Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug. Builds with CONFIG_SPI_ZYNQ_QSPI=m show no new warnings, and our static analyzer no longer warns about this code. | |
Title | spi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op() | |
References |
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-08-22T01:30:04.687Z
Updated: 2024-09-12T17:33:02.937Z
Reserved: 2024-08-22T01:26:23.737Z
Link: CVE-2021-4441
Vulnrichment
Updated: 2024-09-11T12:42:12.940Z
NVD
Status : Analyzed
Published: 2024-08-22T02:15:04.563
Modified: 2024-09-11T16:43:41.000
Link: CVE-2021-4441
Redhat