CVE-2025-38240 (GCVE-0-2025-38240)

Vulnerability from cvelistv5 – Published: 2025-04-18 07:01 – Updated: 2026-05-11 21:23
VLAI
Title
drm/mediatek: dp: drm_err => dev_err in HPD path to avoid NULL ptr
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: dp: drm_err => dev_err in HPD path to avoid NULL ptr The function mtk_dp_wait_hpd_asserted() may be called before the `mtk_dp->drm_dev` pointer is assigned in mtk_dp_bridge_attach(). Specifically it can be called via this callpath: - mtk_edp_wait_hpd_asserted - [panel probe] - dp_aux_ep_probe Using "drm" level prints anywhere in this callpath causes a NULL pointer dereference. Change the error message directly in mtk_dp_wait_hpd_asserted() to dev_err() to avoid this. Also change the error messages in mtk_dp_parse_capabilities(), which is called by mtk_dp_wait_hpd_asserted(). While touching these prints, also add the error code to them to make future debugging easier.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7eacba9a083be65c0f251c19380ec01147c01ebc , < 13ec849fd2eab808ee8eba2625df7ebea3b85edf (git)
Affected: 7eacba9a083be65c0f251c19380ec01147c01ebc , < 57a9fb47551b33cde7b76d17c0072c3b394f4620 (git)
Affected: 7eacba9a083be65c0f251c19380ec01147c01ebc , < 2fda391ef7a701748abd7fa32232981b522c1e07 (git)
Affected: 7eacba9a083be65c0f251c19380ec01147c01ebc , < 149a5c38436c229950cf1020992ce65c9549bc19 (git)
Affected: 7eacba9a083be65c0f251c19380ec01147c01ebc , < 106a6de46cf4887d535018185ec528ce822d6d84 (git)
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Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.87 , ≤ 6.6.* (semver)
Unaffected: 6.12.23 , ≤ 6.12.* (semver)
Unaffected: 6.13.11 , ≤ 6.13.* (semver)
Unaffected: 6.14.2 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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