CVE-2020-36777: media: dvbdev: Fix memory leak in dvb_media_device_free()
First published: Tue Feb 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: Fix memory leak in dvb_media_device_free() dvb_media_device_free() is leaking memory. Free `dvbdev->adapter->conn` before setting it to NULL, as documented in include/media/media-device.h: "The media_entity instance itself must be freed explicitly by the driver if required."
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.9.269 | 4.9.269 |
| redhat/kernel | <4.14.233 | 4.14.233 |
| redhat/kernel | <4.19.191 | 4.19.191 |
| redhat/kernel | <5.4.118 | 5.4.118 |
| redhat/kernel | <5.10.36 | 5.10.36 |
| redhat/kernel | <5.11.20 | 5.11.20 |
| redhat/kernel | <5.12.3 | 5.12.3 |
| redhat/kernel | <5.13 | 5.13 |
| Linux Kernel | >=4.5.0<4.9.269 | |
| Linux Kernel | >=4.10.0<4.14.233 | |
| Linux Kernel | >=4.15.0<4.19.191 | |
| Linux Kernel | >=4.20.0<5.4.118 | |
| Linux Kernel | >=5.5.0<5.10.36 | |
| Linux Kernel | >=5.11.0<5.11.20 | |
| Linux Kernel | >=5.12.0<5.12.3 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2020-36777
- https://lore.kernel.org/linux-cve-announce/20240227184057.2368370-2-gregkh@linuxfoundation.org/T/#u
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2266747
- https://access.redhat.com/errata/RHSA-2024:3618
- https://access.redhat.com/errata/RHSA-2024:3627
- https://bugzilla.redhat.com/show_bug.cgi?id=2266746
- https://git.kernel.org/stable/c/06854b943e0571ccbd7ad0a529babed1a98ff275
- https://git.kernel.org/stable/c/32168ca1f123316848fffb85d059860adf3c409f
- https://git.kernel.org/stable/c/cd89f79be5d553c78202f686e8e4caa5fbe94e98
- https://git.kernel.org/stable/c/9185b3b1c143b8da409c19ac5a785aa18d67a81b
- https://git.kernel.org/stable/c/43263fd43083e412311fa764cd04a727b0c6a749
- https://git.kernel.org/stable/c/9ad15e214fcd73694ea51967d86055f47b802066
- https://git.kernel.org/stable/c/cede24d13be6c2a62be6d7ceea63c2719b0cfa82
- https://git.kernel.org/stable/c/bf9a40ae8d722f281a2721779595d6df1c33a0bf
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2020-36777?
CVE-2020-36777 has a severity rating that indicates it could lead to memory leaks in the Linux kernel.
How do I fix CVE-2020-36777?
To fix CVE-2020-36777, upgrade to kernel versions 4.9.269, 4.14.233, 4.19.191, 5.4.118, 5.10.36, 5.11.20, 5.12.3, or 5.13.
Which software is affected by CVE-2020-36777?
CVE-2020-36777 affects various versions of the Linux kernel prior to the specified remedies.
Is there a patch available for CVE-2020-36777?
Yes, patches for CVE-2020-36777 are included in the remedial kernel versions mentioned.
What components are involved in CVE-2020-36777?
CVE-2020-36777 involves the media subsystem in the Linux kernel, specifically relating to memory management.
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