Guest-to-host code execution via undersized transfer buffer
Published Aug 25, 2022 · Updated Aug 2, 2024
Out-of-bounds write in virglrenderer before 0.10.0 allows guest OS users to crash the host or execute code via a crafted resource. vrend_renderer_transfer_write_iov() allocates a heap buffer using a send_size calculation that omits box->depth, while read_transfer_data() includes the depth when copying into that buffer. A malicious guest must create a crafted VirGL resource and submit VIRTGPU_EXECBUFFER; successful exploitation interrupts the host service or runs code in the renderer's context.
Summary
What happened
Out-of-bounds write in virglrenderer before 0.10.0 allows guest OS users to crash the host or execute code via a crafted resource. vrend_renderer_transfer_write_iov() allocates a heap buffer using a send_size calculation that omits box->depth, while read_transfer_data() includes the depth when copying into that buffer. A malicious guest must create a crafted VirGL resource and submit VIRTGPU_EXECBUFFER; successful exploitation interrupts the host service or runs code in the renderer's context.
The record
- CVE
- CVE-2022-0135
- Published
- Aug 25, 2022
- Updated
- Aug 2, 2024
- Vendor
- Virglrenderer Project
- Product
- virglrenderer
- Classifications
- CWE-787, T1611
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 25, 2022CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=virglrenderer 0.8.1 and after
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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