drm/amd/display: Fix division by zero in setup_dsc_config
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-369.
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix division by zero in setup_dsc_config When slice_height is 0, the division by slice_height in the calculation of the number of slices will cause a division by zero driver crash. This leaves the kernel in a state that requires a reboot. This patch adds a check to avoid the division by zero. The stack trace below is for the 6.8.4 Kernel. I reproduced the issue on a Z16 Gen 2 Lenovo Thinkpad with a Apple Studio Display monitor connected via Thunderbolt. The amdgpu driver crashed with this exception when I rebooted the system with the monitor connected. kernel: ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) kernel: ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? exc_divide_error (arch/x86/kernel/traps.c:194 (discriminator 2)) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? asm_exc_divide_error (./arch/x86/include/asm/idtentry.h:548) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: dc_dsc_compute_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1109) amdgpu After applying this patch, the driver no longer crashes when the monitor is connected and the system is rebooted. I believe this is the same issue reported for 3113.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.15 and later | 5.15.160, 6.1.92, 6.6.32, 6.8.11, 6.9.2, 6.10 | Patch available | CNA |
- Linux VendorLinux Affected 4.15 and later Fixed in 5.15.160, 6.1.92, 6.6.32, 6.8.11, 6.9.2, 6.10 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 5.15.160; 5.16 to before 6.1.92; 6.2 to before 6.6.32; 6.7 to before 6.8.11; 6.9 to before 6.9.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.15.160; 5.16 to before 6.1.92; 6.2 to before 6.6.32; 6.7 to before 6.8.11; 6.9 to before 6.9.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.160, 6.1.92, 6.6.32, 6.8.11, 6.9.2, 6.10
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-36969
- 2026-10-03 Alias added: GHSA-ch3r-hjxg-j657
References
Patch 6
- https://git.kernel.org/stable/c/a32c8f951c8a456c1c251e1dcdf21787f8066445
- https://git.kernel.org/stable/c/91402e0e5de9124a3108db7a14163fcf9a6d322f
- https://git.kernel.org/stable/c/7e4f50dfc98c49b3dc6875a35c3112522fb25639
- https://git.kernel.org/stable/c/f187fcbbb8f8bf10c6687f0beae22509369f7563
- https://git.kernel.org/stable/c/308de6be0c9c7ba36915c0d398e771725c0ea911
- https://git.kernel.org/stable/c/130afc8a886183a94cf6eab7d24f300014ff87ba
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Sources
- CVE-2024-36969 · CVE Program
- CVE-2024-36969 · NVD
- FIRST EPSS
- GHSA-ch3r-hjxg-j657 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-36969 · Red Hat security data · CC BY 4.0
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