{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-53329", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.398Z", "datePublished": "2026-07-01T13:32:14.598Z", "dateUpdated": "2026-08-05T12:35:01.324Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:35:01.324Z" }, "descriptions": [ { "lang": "en", "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 & How]\ndal_vector_reserve() computes the allocation size as\n\"capacity * vector->struct_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)" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The reachable kernel path is AMDGPU DRM display handling via local DRM connector probing or modeset operations; it is not network or namespace reachable. Physical hotplug can also reach related detection paths, but local DRM access is the higher-severity reasonable vector.\nAC:H - The overflow is deterministic once vector capacity crosses the uint32 multiplication limit, but the reachable DDC callers I found pass fixed tiny payload lengths and an attacker would need an unusual path causing enormous vector growth. That prerequisite is outside normal attacker control.\nPR:L - Triggering the relevant DRM display paths requires local access to the KMS device or DRM master-style display control, not real root in the init namespace. No user-namespace route or network-facing unauthenticated path reaches this code.\nUI:N - A local attacker who has the needed DRM access can trigger connector probing or modeset paths directly. No separate victim action is required.\nS:U - The corruption occurs inside the host kernel display driver and affects the same kernel security authority. There is no VM escape, IOMMU boundary bypass, or cross-scope component involved.\nC:H - The vulnerable allocation can leave the vector with a logical capacity larger than its actual heap buffer, and subsequent appends can corrupt adjacent kernel heap memory. Kernel heap corruption is reasonably leverageable for information disclosure.\nI:H - Subsequent vector appends perform out-of-bounds writes of controlled `struct i2c_payload` contents into adjacent kernel heap memory. That is kernel memory corruption and can plausibly support control-flow or data-integrity compromise.\nA:H - Even without full exploitation, the undersized allocation followed by appends can corrupt heap metadata or neighboring objects. That can cause kernel oops, panic, or display-driver crashes." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/amd/display/dc/basics/vector.c" ], "versions": [ { "version": "2004f45ef83f07f43f5da6ede780b08068c7583d", "lessThan": "9540b0a4d13e4ede64ae1197d66a176d2149daa9", "status": "affected", "versionType": "git" }, { "version": "2004f45ef83f07f43f5da6ede780b08068c7583d", "lessThan": "31180638a33acad12c863132704a76536fb66211", "status": "affected", "versionType": "git" }, { "version": "2004f45ef83f07f43f5da6ede780b08068c7583d", "lessThan": "b15825deac1acff72638bbc8f05b89ceef8dfb13", "status": "affected", "versionType": "git" }, { "version": "2004f45ef83f07f43f5da6ede780b08068c7583d", "lessThan": "201151e120f0062bcda21cad5d007b82725ad23b", "status": "affected", "versionType": "git" }, { "version": "2004f45ef83f07f43f5da6ede780b08068c7583d", "lessThan": "a914aa802669e073f014dae2e5708633b5cecd34", "status": "affected", "versionType": "git" }, { "version": "2004f45ef83f07f43f5da6ede780b08068c7583d", "lessThan": "e09689286385a66311ac6922af95339d7a3cef8d", "status": "affected", "versionType": "git" }, { "version": "2004f45ef83f07f43f5da6ede780b08068c7583d", "lessThan": "de988c7a31f0774f07894cfe4802996f318e2870", "status": "affected", "versionType": "git" }, { "version": "2004f45ef83f07f43f5da6ede780b08068c7583d", "lessThan": "da48bc4461b8a5ebfb9264c9b191a701d8e99009", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/amd/display/dc/basics/vector.c" ], "versions": [ { "version": "4.15", "status": "affected" }, { "version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.260", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.10.260" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.15.210" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.1.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.6.143" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.12.94" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.18.36" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "7.0.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9" }, { "url": "https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211" }, { "url": "https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13" }, { "url": "https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b" }, { "url": "https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34" }, { "url": "https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d" }, { "url": "https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870" }, { "url": "https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009" } ], "title": "drm/amd/display: Use krealloc_array() in dal_vector_reserve()", "x_generator": { "engine": "bippy-1.2.0" } } } }