CVE-2022-49644: drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector() If drm_connector_init fails, intel_connector_free will be called to take care of proper free. So it is necessary to drop the refcount of port before intel_connector_free. (cherry picked from commit cea9ed611e85d36a05db52b6457bf584b7d969e2)
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=4.15<5.4.207 | |
| Linux Kernel | >=5.5<5.10.132 | |
| Linux Kernel | >=5.11<5.15.56 | |
| Linux Kernel | >=5.16<5.18.13 | |
| Linux Kernel | =5.19-rc1 | |
| Linux Kernel | =5.19-rc2 | |
| Linux Kernel | =5.19-rc3 | |
| Linux Kernel | =5.19-rc4 | |
| Linux Kernel | =5.19-rc5 | |
| Linux Kernel | =5.19-rc6 |
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Reference Links
- https://git.kernel.org/stable/c/72f231b9a88abcfac9f5ddaa1a0aacb3f9f87ba5
- https://git.kernel.org/stable/c/592f3bad00b7e2a95a6fb7a4f9e742c061c9c3c1
- https://git.kernel.org/stable/c/505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218
- https://git.kernel.org/stable/c/a91522b4279bebb098106a19b91f82b9c3213be9
- https://git.kernel.org/stable/c/85144df9ff4652816448369de76897c57cbb1b93
Frequently Asked Questions
What is the severity of CVE-2022-49644?
The severity of CVE-2022-49644 is classified as medium due to the potential for a reference count leak in the Linux kernel.
How do I fix CVE-2022-49644?
To fix CVE-2022-49644, update your Linux kernel to the latest version that addresses this vulnerability.
Which Linux kernel versions are affected by CVE-2022-49644?
CVE-2022-49644 affects Linux kernel versions from 4.15 to 5.19-rc6.
What component of the Linux kernel does CVE-2022-49644 impact?
CVE-2022-49644 impacts the Direct Rendering Manager (DRM) and specifically affects the i915 driver.
Is CVE-2022-49644 limited to specific distributions of Linux?
CVE-2022-49644 is not limited to specific distributions but affects the Linux kernel itself, used across various distributions.
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