CVE-2025-40354 (GCVE-0-2025-40354)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:30 – Updated: 2025-12-20 08:52
VLAI?
Title
drm/amd/display: increase max link count and fix link->enc NULL pointer access
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: increase max link count and fix link->enc NULL pointer access [why] 1.) dc->links[MAX_LINKS] array size smaller than actual requested. max_connector + max_dpia + 4 virtual = 14. increase from 12 to 14. 2.) hw_init() access null LINK_ENC for dpia non display_endpoint. (cherry picked from commit d7f5a61e1b04ed87b008c8d327649d184dc5bb45)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < f28092be4e12b7df9e4f415d25bf0d767bc2d9ed (git)
Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < a3fc0d36cfb927f8986b83bf5fba47dbedad3c63 (git)
Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < bec947cbe9a65783adb475a5fb47980d7b4f4796 (git)
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    Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 6.12.56 , ≤ 6.12.* (semver)
Unaffected: 6.17.6 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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            "drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: increase max link count and fix link-\u003eenc NULL pointer access\n\n[why]\n1.) dc-\u003elinks[MAX_LINKS] array size smaller than actual requested.\nmax_connector + max_dpia + 4 virtual = 14.\nincrease from 12 to 14.\n\n2.) hw_init() access null LINK_ENC for dpia non display_endpoint.\n\n(cherry picked from commit d7f5a61e1b04ed87b008c8d327649d184dc5bb45)"
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    "datePublished": "2025-12-16T13:30:27.082Z",
    "dateReserved": "2025-04-16T07:20:57.187Z",
    "dateUpdated": "2025-12-20T08:52:14.892Z",
    "state": "PUBLISHED"
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