Vulnerability · Published Apr 25, 2025 · Assigned by GitHub_M

CVE-2025-46333z2d OOB composition could lead to invalid memory access and corruption

High 7.3

In plain English

A high-severity memory corruption in z2d from vancluever. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 4.0)7.3High

Exploit odds (30 days)0.2%top 92.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

z2d is a pure Zig 2D graphics library. Versions of z2d after `0.5.1` and up to and including `0.6.0`, when writing from one surface to another using `z2d.compositor.StrideCompositor.run`, and higher-level operations when the anti-aliasing mode is set to `.default` (such as `Context.fill`, `Context.stroke`, `painter.fill`, and `painter.stroke`), the source surface can be completely out-of-bounds on the x-axis, but not on the y-axis, by way of a negative offset. This results in an overflow of the value controlling the length of the stride. In non-safe optimization modes (consumers compiling with `ReleaseFast` or `ReleaseSmall`), this could potentially lead to invalid memory accesses or corruption. This issue is patched in version `0.6.1`. Users on an untagged version after `v0.5.1` and before `v0.6.1` are advised to update to address the vulnerability. Those still on Zig `0.13.0` are recommended to downgrade to `v0.5.1`.

Affected products (as reported)

Vendor	Product	Versions
vancluever	z2d	> 0.5.1, <= 0.6.0

Weakness: CWE-119, CWE-122, CWE-190 · Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

References

https://github.com/vancluever/z2d/security/advisories/GHSA-mm4c-p35v-7hx3 x_refsource_CONFIRM
https://github.com/vancluever/z2d/issues/104 x_refsource_MISC
https://github.com/vancluever/z2d/issues/105 x_refsource_MISC