CVE-2026-53329 (GCVE-0-2026-53329)

Vulnerability from cvelistv5 – Published: 2026-07-01 13:32 – Updated: 2026-07-01 13:32
VLAI?
Title
drm/amd/display: Use krealloc_array() in dal_vector_reserve()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Use krealloc_array() in dal_vector_reserve() [Why & How] dal_vector_reserve() computes the allocation size as "capacity * vector->struct_size" using uint32_t arithmetic, which can silently wrap to a small value on overflow. This would cause krealloc to return a smaller buffer than expected, leading to heap overflows on subsequent vector appends. Replace krealloc() with krealloc_array() which performs an internal overflow check and returns NULL on wrap, preventing the issue. (cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < 31180638a33acad12c863132704a76536fb66211 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < b15825deac1acff72638bbc8f05b89ceef8dfb13 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < 201151e120f0062bcda21cad5d007b82725ad23b (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < a914aa802669e073f014dae2e5708633b5cecd34 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < e09689286385a66311ac6922af95339d7a3cef8d (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < de988c7a31f0774f07894cfe4802996f318e2870 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < da48bc4461b8a5ebfb9264c9b191a701d8e99009 (git)
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    Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Use krealloc_array() in dal_vector_reserve()\n\n[Why \u0026 How]\ndal_vector_reserve() computes the allocation size as\n\"capacity * vector-\u003estruct_size\" using uint32_t arithmetic, which can\nsilently wrap to a small value on overflow. This would cause krealloc to\nreturn a smaller buffer than expected, leading to heap overflows on\nsubsequent vector appends.\n\nReplace krealloc() with krealloc_array() which performs an internal\noverflow check and returns NULL on wrap, preventing the issue.\n\n(cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)"
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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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