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drm/amd/display: Use krealloc_array() in dal_vector_reserve()

Type: advisorySource: Official CVE List1 source record

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)

Announced Source revision 1
Original source ↗

CVE-2026-53329

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-53329

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
        "lessThan": "9540b0a4d13e4ede64ae1197d66a176d2149daa9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
        "lessThan": "31180638a33acad12c863132704a76536fb66211",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
        "lessThan": "b15825deac1acff72638bbc8f05b89ceef8dfb13",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
        "lessThan": "201151e120f0062bcda21cad5d007b82725ad23b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
        "lessThan": "a914aa802669e073f014dae2e5708633b5cecd34",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
        "lessThan": "e09689286385a66311ac6922af95339d7a3cef8d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
        "lessThan": "de988c7a31f0774f07894cfe4802996f318e2870",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
        "lessThan": "da48bc4461b8a5ebfb9264c9b191a701d8e99009",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/display/dc/basics/vector.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.15"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.15",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.260",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.210",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.176",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.143",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.94",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.36",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.13",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/display/dc/basics/vector.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-53329

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40806 · Revision 1
Added to Heist Feed
Publisher date
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