imageproc: Out-of-bounds read via NaN coordinates in bilinear/bicubic sampling
Exploitation and risk
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osv · GHSA-qg8r-f7x3-25f7
PublishedA bounds check was performed in floating points before a cast to the index passed to an unchecked access function. This checked considered `NaN` cases improperly, causing them to succeed the check instead of failing it. The floating point coordinate is under caller control by passing a selected projection matrix. Carefully controlling the coordinates of an image with no data and one non-zero dimension provides an arbitrary read primitive in the first 32-bits of address space with a Bilinear sampling method. Using bicubic sampling can result in a read of a few bytes beyond an allocation. Other out-of-bounds reads may be possible.
- Source published
- 7 May 2026 03:10:13 UTC
- Source modified
- 10 Sep 2026 03:51:06 UTC
- Saved here
- 24 Oct 2026 13:19:54 UTC
- Source terms
- GitHub Advisory Database · CC-BY-4.0
Original source record · Cite this exact observation · Complete original publisher JSON
Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Publisher rating · MODERATE
osv · RUSTSEC-2026-0117
PublishedA bounds check was performed in floating points before a cast to the index passed to an unchecked access function. This checked considered `NaN` cases improperly, causing them to succeed the check instead of failing it. The floating point coordinate is under caller control by passing a selected projection matrix. Carefully controlling the coordinates of an image with no data and one non-zero dimension provides an arbitrary read primitive in the first 32-bits of address space with a Bilinear sampling method. Using bicubic sampling can result in a read of a few bytes beyond an allocation. Other out-of-bounds reads may be possible.
- Source published
- 1 May 2026 12:00:00 UTC
- Source modified
- 7 May 2026 08:56:41 UTC
- Saved here
- 24 Oct 2026 13:19:54 UTC
- Source terms
- OSV · upstream source license applies
Original source record · Cite this exact observation · Complete original publisher JSON
Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.