drm/amd/display: Validate GPIO pin LUT table size before iterating
Summary
| CVE | CVE-2026-64097 |
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| State | PUBLISHED |
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| Assigner | Linux |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2026-07-19 16:17:50 UTC |
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| Updated | 2026-07-20 07:16:41 UTC |
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| Description | 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) |
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Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected ae79c310b1a6f97429a5784b65f125d9cc9c95b1 9900f6954be779011e7c2cd42addd87baf028bc5 git |
Not specified |
| CNA |
Linux |
Linux |
affected ae79c310b1a6f97429a5784b65f125d9cc9c95b1 fb30a3890d62fd50a95aef684faf64a307592e42 git |
Not specified |
| CNA |
Linux |
Linux |
affected ae79c310b1a6f97429a5784b65f125d9cc9c95b1 67461e0c15335894cc5d3b84cda823bf8cbdc886 git |
Not specified |
| CNA |
Linux |
Linux |
affected ae79c310b1a6f97429a5784b65f125d9cc9c95b1 7ca695b3122297b06a3ed605bbe1cd32c85d9f5a git |
Not specified |
| CNA |
Linux |
Linux |
affected ae79c310b1a6f97429a5784b65f125d9cc9c95b1 f2a4827e980ba07de4391fa84d9c39a12726bdd7 git |
Not specified |
| CNA |
Linux |
Linux |
affected ae79c310b1a6f97429a5784b65f125d9cc9c95b1 86d2b20644b11d21fe52c596e6e922b4590a3e3f git |
Not specified |
| CNA |
Linux |
Linux |
affected 4.15 |
Not specified |
| CNA |
Linux |
Linux |
unaffected 4.15 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.1.175 6.1.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.6.142 6.6.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.12.92 6.12.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18.34 6.18.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.0.11 7.0.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.1 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/fb30a3890d62fd50a95aef684faf64a307592e42 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/f2a4827e980ba07de4391fa84d9c39a12726bdd7 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/67461e0c15335894cc5d3b84cda823bf8cbdc886 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/9900f6954be779011e7c2cd42addd87baf028bc5 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/7ca695b3122297b06a3ed605bbe1cd32c85d9f5a |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/86d2b20644b11d21fe52c596e6e922b4590a3e3f |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.
