In the Linux kernel, the following vulnerability has been resolved:
drm/msm/dp: populate connector of struct dp_panel
DP CTS test case 4.2.2.6 has valid edid with bad checksum on purpose and expect DP source return correct checksum. During drm edid read, correct edid checksum is calculated and stored at connector::real_edid_checksum.
The problem is struct dp_panel::connector never be assigned, instead the connector is stored in struct msm_dp::connector. When we run compliance testing test case 4.2.2.6 dp_panel_handle_sink_request() won't have a valid edid set in struct dp_panel::edid so we'll try to use the connectors real_edid_checksum and hit a NULL pointer dereference error because the connector pointer is never assigned.
Changes in V2: -- populate panel connector at msm_dp_modeset_init() instead of at dp_panel_read_sink_caps()
Changes in V3: -- remove unhelpful kernel crash trace commit text -- remove renaming dp_display parameter to dp
Changes in V4: -- add more details to commit text
Changes in v10: -- group into one series
Changes in v11: -- drop drm/msm/dp: dp_link_parse_sink_count() return immediately if aux read
Signee-off-by: Kuogee Hsieh <[email protected]>
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-awsUpgrade linux-lowlatencyUpgrade linuxUpgrade linux-gcpUpgrade linux-gkeUpgrade linux-hwe-5.15Upgrade linux-ibmUpgrade linux-azure-5.15Upgrade linux-oracleUpgrade linux-kvmUpgrade linux-intel-iotgUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azureUpgrade linux-realtimeUpgrade linux-intel-iotg-5.15Upgrade linux-raspi | Mar 19, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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