NULL Pointer Dereference Affecting python3-perf package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-RHEL8-PYTHON3PERF-7236994
  • published10 Jun 2024
  • disclosed21 May 2024

Introduced: 21 May 2024

CVE-2023-52749  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 python3-perf.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-perf package and not the python3-perf package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

spi: Fix null dereference on suspend

A race condition exists where a synchronous (noqueue) transfer can be active during a system suspend. This can cause a null pointer dereference exception to occur when the system resumes.

Example order of events leading to the exception:

  1. spi_sync() calls __spi_transfer_message_noqueue() which sets ctlr->cur_msg
  2. Spi transfer begins via spi_transfer_one_message()
  3. System is suspended interrupting the transfer context
  4. System is resumed
  5. spi_controller_resume() calls spi_start_queue() which resets cur_msg to NULL
  6. Spi transfer context resumes and spi_finalize_current_message() is called which dereferences cur_msg (which is now NULL)

Wait for synchronous transfers to complete before suspending by acquiring the bus mutex and setting/checking a suspend flag.

CVSS Scores

version 3.1