CVE-2024-26660: drm/amd/display: Implement bounds check for stream encoder creation in DCN301
First published: Tue Apr 02 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Implement bounds check for stream encoder creation in DCN301 'stream_enc_regs' array is an array of dcn10_stream_enc_registers structures. The array is initialized with four elements, corresponding to the four calls to stream_enc_regs() in the array initializer. This means that valid indices for this array are 0, 1, 2, and 3. The error message 'stream_enc_regs' 4 <= 5 below, is indicating that there is an attempt to access this array with an index of 5, which is out of bounds. This could lead to undefined behavior Here, eng_id is used as an index to access the stream_enc_regs array. If eng_id is 5, this would result in an out-of-bounds access on the stream_enc_regs array. Thus fixing Buffer overflow error in dcn301_stream_encoder_create reported by Smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn301/dcn301_resource.c:1011 dcn301_stream_encoder_create() error: buffer overflow 'stream_enc_regs' 4 <= 5
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.15.149 | 5.15.149 |
| redhat/kernel | <6.1.78 | 6.1.78 |
| redhat/kernel | <6.6.17 | 6.6.17 |
| redhat/kernel | <6.7.5 | 6.7.5 |
| redhat/kernel | <6.8 | 6.8 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.7-1 6.11.9-1 |
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Reference Links
- https://git.kernel.org/stable/c/42442f74314d41ddc68227047036fa3e78940054
- https://git.kernel.org/stable/c/58fca355ad37dcb5f785d9095db5f748b79c5dc2
- https://git.kernel.org/stable/c/a938eab9586eea31cfd129a507f552efae14d738
- https://git.kernel.org/stable/c/cd9bd10c59e3c1446680514fd3097c5b00d3712d
- https://git.kernel.org/stable/c/efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a
- https://launchpad.net/bugs/cve/CVE-2024-26660
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26660
- https://nvd.nist.gov/vuln/detail/CVE-2024-26660
- https://security-tracker.debian.org/tracker/CVE-2024-26660
- https://ubuntu.com/security/CVE-2024-26660
- https://git.kernel.org/linus/58fca355ad37dcb5f785d9095db5f748b79c5dc2
- https://access.redhat.com/security/cve/CVE-2024-26660
- https://lore.kernel.org/linux-cve-announce/2024040222-CVE-2024-26660-3f40@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2272783
- https://access.redhat.com/errata/RHSA-2024:5102
- https://access.redhat.com/errata/RHSA-2024:5101
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2272782
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