CVE-2025-38240

Description

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.

Reserved 2025-04-16 | Published 2025-04-18 | Updated 2025-05-26 | Assigner Linux

Product status

Default status
unaffected

7eacba9a083be65c0f251c19380ec01147c01ebc before 13ec849fd2eab808ee8eba2625df7ebea3b85edf
affected

7eacba9a083be65c0f251c19380ec01147c01ebc before 57a9fb47551b33cde7b76d17c0072c3b394f4620
affected

7eacba9a083be65c0f251c19380ec01147c01ebc before 2fda391ef7a701748abd7fa32232981b522c1e07
affected

7eacba9a083be65c0f251c19380ec01147c01ebc before 149a5c38436c229950cf1020992ce65c9549bc19
affected

7eacba9a083be65c0f251c19380ec01147c01ebc before 106a6de46cf4887d535018185ec528ce822d6d84
affected

Default status
affected

6.6
affected

Any version before 6.6
unaffected

6.6.87
unaffected

6.12.23
unaffected

6.13.11
unaffected

6.14.2
unaffected

6.15
unaffected

References

git.kernel.org/...c/13ec849fd2eab808ee8eba2625df7ebea3b85edf

git.kernel.org/...c/57a9fb47551b33cde7b76d17c0072c3b394f4620

git.kernel.org/...c/2fda391ef7a701748abd7fa32232981b522c1e07

git.kernel.org/...c/149a5c38436c229950cf1020992ce65c9549bc19

git.kernel.org/...c/106a6de46cf4887d535018185ec528ce822d6d84

cve.org (CVE-2025-38240)

nvd.nist.gov (CVE-2025-38240)

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