CVE-2026-53329 Details
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Use krealloc_array() in dal_vector_reserve() [Why & How] dal_vector_reserve() computes the allocation size as "capacity * vector->struct_size" using uint32_t arithmetic, which can silently wrap to a small value on overflow. This would cause krealloc to return a smaller buffer than expected, leading to heap overflows on subsequent vector appends. Replace krealloc() with krealloc_array() which performs an internal overflow check and returns NULL on wrap, preventing the issue. (cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)
A heap overflow vulnerability has been identified in the Linux kernel's AMD display driver. The issue arises in the 'dal_vector_reserve()' function, which calculates the memory allocation size using unsigned 32-bit integer arithmetic. This approach can lead to silent integer overflows, causing the 'krealloc()' function to return a smaller buffer than intended. Consequently, when additional elements are appended to the vector, it can result in a heap overflow. The vulnerability affects the Linux kernel's stable releases.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been addressed. The vulnerability has been fixed by replacing 'krealloc()' with 'krealloc_array()', which includes an internal overflow check and prevents the allocation issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b | kernel.org | Patch |
| https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13 | kernel.org | Patch |
| https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009 | kernel.org | Patch |
| https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-674 | Uncontrolled Recursion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.15, < 5.10.260 >= 5.11, < 5.15.210 >= 5.16, < 6.1.176 >= 6.2, < 6.6.143 >= 6.7, < 6.12.94 >= 6.13, < 6.18.36 >= 6.19, < 7.0.13 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 7.1 rc5 7.1 rc6 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | Initial Analysis | [email protected] |
| Jul 18, 2026 | CVE Modified | kernel.org |
| Jul 4, 2026 | CVE Modified | kernel.org |
| Jul 1, 2026 | New CVE Received | kernel.org |