CVE-2022-49221 (GCVE-0-2022-49221)
Vulnerability from cvelistv5
Published
2025-02-26 01:55
Modified
2025-10-01 19:47
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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 <quic_khsieh@quicinc.com>
References
Impacted products
Vendor Product Version
Linux Linux Version: f86bc4a1a401d3691bad41e67f9db0c2ea94da32
Version: 7948fe12d47a946fb8025a0534c900e3dd4b5839
Version: 7948fe12d47a946fb8025a0534c900e3dd4b5839
Version: 7948fe12d47a946fb8025a0534c900e3dd4b5839
Version: 7948fe12d47a946fb8025a0534c900e3dd4b5839
Version: ab1ccd1e2584b268784518f838f7cc72faec576b
Version: 08a96864a45b65ee406a344c78dd761b2fd66887
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