CVE-2026-64097

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate GPIO pin LUT table size before iterating [Why&How] The GPIO pin table parsers in get_gpio_i2c_info() and bios_parser_get_gpio_pin_info() derive an element count from the VBIOS table_header.structuresize field, then iterate over gpio_pin[] entries. However, GET_IMAGE() only validates that the table header itself fits within the BIOS image. If the VBIOS reports a structuresize larger than the actual mapped data, the loop reads past the end of the BIOS image, causing an out-of-bounds read. Fix this by calling bios_get_image() to validate that the full claimed structuresize is accessible within the BIOS image before entering the loop in both functions. (cherry picked from commit ba5e95b43b773ae1bf1f66ee6b31eb774e65afe3)

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/67461e0c15335894cc5d3b84cda823bf8cbdc886	Patch
https://git.kernel.org/stable/c/7ca695b3122297b06a3ed605bbe1cd32c85d9f5a	Patch
https://git.kernel.org/stable/c/86d2b20644b11d21fe52c596e6e922b4590a3e3f	Patch
https://git.kernel.org/stable/c/9900f6954be779011e7c2cd42addd87baf028bc5	Patch
https://git.kernel.org/stable/c/f2a4827e980ba07de4391fa84d9c39a12726bdd7	Patch
https://git.kernel.org/stable/c/fb30a3890d62fd50a95aef684faf64a307592e42	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::

History

No history.

Information

Published : 2026-07-19 16:17

Updated : 2026-08-11 16:09

NVD link : CVE-2026-64097

Mitre link : CVE-2026-64097

CVE.ORG link : CVE-2026-64097

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2026-64097", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ae79c310b1a6f97429a5784b65f125d9cc9c95b1", "lessThan": "9900f6954be779011e7c2cd42addd87baf028bc5", "versionType": "git"}, {"status": "affected", "version": "ae79c310b1a6f97429a5784b65f125d9cc9c95b1", "lessThan": "fb30a3890d62fd50a95aef684faf64a307592e42", "versionType": "git"}, {"status": "affected", "version": "ae79c310b1a6f97429a5784b65f125d9cc9c95b1", "lessThan": "67461e0c15335894cc5d3b84cda823bf8cbdc886", "versionType": "git"}, {"status": "affected", "version": "ae79c310b1a6f97429a5784b65f125d9cc9c95b1", "lessThan": "7ca695b3122297b06a3ed605bbe1cd32c85d9f5a", "versionType": "git"}, {"status": "affected", "version": "ae79c310b1a6f97429a5784b65f125d9cc9c95b1", "lessThan": "f2a4827e980ba07de4391fa84d9c39a12726bdd7", "versionType": "git"}, {"status": "affected", "version": "ae79c310b1a6f97429a5784b65f125d9cc9c95b1", "lessThan": "86d2b20644b11d21fe52c596e6e922b4590a3e3f", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/amd/display/dc/bios/bios_parser2.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": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.142", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.92", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.34", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.11", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c"], "defaultStatus": "affected"}]}], "published": "2026-07-19T16:17:50.727", "references": [{"url": "https://git.kernel.org/stable/c/67461e0c15335894cc5d3b84cda823bf8cbdc886", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7ca695b3122297b06a3ed605bbe1cd32c85d9f5a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/86d2b20644b11d21fe52c596e6e922b4590a3e3f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9900f6954be779011e7c2cd42addd87baf028bc5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f2a4827e980ba07de4391fa84d9c39a12726bdd7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fb30a3890d62fd50a95aef684faf64a307592e42", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Validate GPIO pin LUT table size before iterating\n\n[Why&How]\nThe GPIO pin table parsers in get_gpio_i2c_info() and\nbios_parser_get_gpio_pin_info() derive an element count from the VBIOS\ntable_header.structuresize field, then iterate over gpio_pin[] entries.\nHowever, GET_IMAGE() only validates that the table header itself fits\nwithin the BIOS image. If the VBIOS reports a structuresize larger than\nthe actual mapped data, the loop reads past the end of the BIOS image,\ncausing an out-of-bounds read.\n\nFix this by calling bios_get_image() to validate that the full claimed\nstructuresize is accessible within the BIOS image before entering the\nloop in both functions.\n\n(cherry picked from commit ba5e95b43b773ae1bf1f66ee6b31eb774e65afe3)"}], "lastModified": "2026-08-11T16:09:41.323", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F65DF08B-7217-474C-84AC-3F3109E9AB6F", "versionEndExcluding": "6.1.175", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FBFF77B0-526A-4AF1-84D0-ED7187624A67", "versionEndExcluding": "6.6.142", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9CB90BD9-95B7-4D7F-9F17-4ECE6CFB66C9", "versionEndExcluding": "6.12.92", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A4B1EF6D-18D7-4838-BC37-7499D5DCC3C0", "versionEndExcluding": "6.18.34", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0520D091-FC52-4A50-AF07-70AE7D08B750", "versionEndExcluding": "7.0.11", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}