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CVE-2026-98181

Unknown

Last modified

CVE-2026-98181 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: drm/gud: fix out-of-bounds write in gud_plane_atomic_check() The plane property loop uses req->properties[num_properties + i] as write index while simultaneously incrementing `num_properties` inside the loop. At iteration i, num_properties has also incremented by i, so the write is done at `initial_num_properties + 2*i`, skipping every other index and advancing by 2 per iteration. With just 2 connector and 32 plane properties the last write happens at index 64, one slot past the end of the 64-slot (indices 0–63) allocation. A USB device can trigger OOB by advertising the maximum number of properties. Fix by dropping the redundant `+ i`; num_properties is already the correct running index, as gud_connector_fill_properties() fills the preceding slots..

Description

In the Linux kernel, the following vulnerability has been resolved: drm/gud: fix out-of-bounds write in gud_plane_atomic_check() The plane property loop uses req->properties[num_properties + i] as write index while simultaneously incrementing `num_properties` inside the loop. At iteration i, num_properties has also incremented by i, so the write is done at `initial_num_properties + 2*i`, skipping every other index and advancing by 2 per iteration. With just 2 connector and 32 plane properties the last write happens at index 64, one slot past the end of the 64-slot (indices 0–63) allocation. A USB device can trigger OOB by advertising the maximum number of properties. Fix by dropping the redundant `+ i`; num_properties is already the correct running index, as gud_connector_fill_properties() fills the preceding slots.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 40e1a70b4aedf2859a1829991b48ef0ebe650bf2, < ee04903fe6a098160d20dde4fc5af4cb42846735; >= 40e1a70b4aedf2859a1829991b48ef0ebe650bf2, < 4153a9e008f2512bd3cf90a319436865847369b9; >= 40e1a70b4aedf2859a1829991b48ef0ebe650bf2, < 5f5e565410b4987e9663f599f9ab0c350f8338d4; >= 40e1a70b4aedf2859a1829991b48ef0ebe650bf2, < 7e630edb22088df7aa0d55b02237a71e4c9a523d; >= 40e1a70b4aedf2859a1829991b48ef0ebe650bf2, < 2c92af27ad23e2fbc0367b11a9027d36d94ef4b3; >= 40e1a70b4aedf2859a1829991b48ef0ebe650bf2, < ea57100955c1c2a525ba1a98c18d9a05b25aeedb; >= 40e1a70b4aedf2859a1829991b48ef0ebe650bf2, < 59ced288fcba9e91bd38e61a972ad782c4edb7d0
LinuxLinux5.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98181?
In the Linux kernel, the following vulnerability has been resolved: drm/gud: fix out-of-bounds write in gud_plane_atomic_check() The plane property loop uses req->properties[num_properties + i] as write index while simultaneously incrementing `num_properties` inside the loop. At iteration i, num_properties has also incremented by i, so the write is done at `initial_num_properties + 2*i`, skipping every other index and advancing by 2 per iteration. With just 2 connector and 32 plane properties the last write happens at index 64, one slot past the end of the 64-slot (indices 0–63) allocation. A USB device can trigger OOB by advertising the maximum number of properties. Fix by dropping the redundant `+ i`; num_properties is already the correct running index, as gud_connector_fill_properties() fills the preceding slots.
How severe is CVE-2026-98181?
Severity scoring for CVE-2026-98181 is pending analysis.
How do I fix CVE-2026-98181?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST