CVE-2026-45958

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it requires local system access, not network or adjacent reachability.\nAC:L - The attacker fully controls the vidi->edid pointer value passed in the ioctl and can reliably trigger the dereference/copy on demand; no race or uncontrolled condition is involved.\nPR:L - The ioctl is flagged DRM_AUTH, so the caller must be an authenticated DRM client (a local user with access to the DRM device node, who can become master on first open); no elevated/root privileges are needed.\nUI:N - The attacker issues the ioctl and reads back the connector EDID property entirely on their own; no action by another user is required.\nS:U - The impact stays within the kernel's own security authority; no crossing of a VM, IOMMU, or sandbox boundary occurs.\nC:H - The user-supplied value is dereferenced as a kernel pointer and up to 32 KB is kmemdup'd from any attacker-chosen kernel address, then exposed back to userspace via the connector's EDID blob property \u2014 an arbitrary kernel-memory read/info-leak primitive.\nI:N - The flaw copies data from the attacker-controlled address into a freshly allocated kernel buffer; it provides no primitive to write or modify attacker-controlled kernel memory.\nA:H - Supplying an unmapped or invalid kernel address causes the direct dereference/kmemdup to fault, producing a kernel oops/panic and denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/exynos/exynos_drm_vidi.c"], "versions": [{"version": "b73d12303ecfc91123363d8900e127da44bf42a6", "lessThan": "13537f7f6d28a87ee2e496e071b6ad9541905f23", "status": "affected", "versionType": "git"}, {"version": "b73d12303ecfc91123363d8900e127da44bf42a6", "lessThan": "c2914c0ca7557c6c5c845621cb6d6c9f26ab5a8c", "status": "affected", "versionType": "git"}, {"version": "b73d12303ecfc91123363d8900e127da44bf42a6", "lessThan": "7efb6a4e6b1b523e744d17e6249757ed97caae7c", "status": "affected", "versionType": "git"}, {"version": "b73d12303ecfc91123363d8900e127da44bf42a6", "lessThan": "2e147aa3169b83eaf044776f81d86235bf147de1", "status": "affected", "versionType": "git"}, {"version": "b73d12303ecfc91123363d8900e127da44bf42a6", "lessThan": "4c4193829109f38b2855de77981adc2e066286c7", "status": "affected", "versionType": "git"}, {"version": "b73d12303ecfc91123363d8900e127da44bf42a6", "lessThan": "4949e32387fe315b59ad5f422c9fc52836fbdd1e", "status": "affected", "versionType": "git"}, {"version": "b73d12303ecfc91123363d8900e127da44bf42a6", "lessThan": "235d702b771416b8a61e81bb09ba39282e4268fd", "status": "affected", "versionType": "git"}, {"version": "b73d12303ecfc91123363d8900e127da44bf42a6", "lessThan": "d4c98c077c7fb2dfdece7d605e694b5ea2665085", "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/exynos/exynos_drm_vidi.c"], "versions": [{"version": "3.4", "status": "affected"}, {"version": "0", "lessThan": "3.4", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.77", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.14", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.4", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "3.4", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.12.77"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.18.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.19.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/13537f7f6d28a87ee2e496e071b6ad9541905f23"}, {"url": "https://git.kernel.org/stable/c/c2914c0ca7557c6c5c845621cb6d6c9f26ab5a8c"}, {"url": "https://git.kernel.org/stable/c/7efb6a4e6b1b523e744d17e6249757ed97caae7c"}, {"url": "https://git.kernel.org/stable/c/2e147aa3169b83eaf044776f81d86235bf147de1"}, {"url": "https://git.kernel.org/stable/c/4c4193829109f38b2855de77981adc2e066286c7"}, {"url": "https://git.kernel.org/stable/c/4949e32387fe315b59ad5f422c9fc52836fbdd1e"}, {"url": "https://git.kernel.org/stable/c/235d702b771416b8a61e81bb09ba39282e4268fd"}, {"url": "https://git.kernel.org/stable/c/d4c98c077c7fb2dfdece7d605e694b5ea2665085"}], "title": "drm/exynos: vidi: fix to avoid directly dereferencing user pointer", "x_generator": {"engine": "bippy-1.2.0"}}}}

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"attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-05-27T14:17:12.417", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/13537f7f6d28a87ee2e496e071b6ad9541905f23"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/235d702b771416b8a61e81bb09ba39282e4268fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e147aa3169b83eaf044776f81d86235bf147de1"}, {"source": 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{"bugzilla": {"description": "kernel: drm/exynos: vidi: fix to avoid directly dereferencing user pointer", "id": "2482155", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482155"}, "csaw": false, "cwe": "CWE-822", "details": ["A flaw was found in the Linux kernel's drm/exynos: vidi driver. A local user could exploit this vulnerability by directly dereferencing a user pointer in the vidi_connection_ioctl() function. This allows for arbitrary kernel memory access from user space, potentially leading to privilege escalation or information disclosure."], "name": "CVE-2026-45958", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45958\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45958\nhttps://lore.kernel.org/linux-cve-announce/2026052733-CVE-2026-45958-f9a1@gregkh/T"], "threat_severity": "Moderate"}

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