Bug 2451197 (CVE-2026-23280)

Summary: CVE-2026-23280 kernel: accel/amdxdna: Prevent ubuf size overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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A flaw was found in the Linux kernel's accel/amdxdna component. The calculation for the ubuf size may overflow, leading to an undersized memory allocation. This can result in memory corruption, potentially allowing an attacker to cause a denial of service or execute arbitrary code.
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Description OSIDB Bzimport 2026-03-25 11:04:08 UTC 
In the Linux kernel, the following vulnerability has been resolved:

accel/amdxdna: Prevent ubuf size overflow

The ubuf size calculation may overflow, resulting in an undersized
allocation and possible memory corruption.

Use check_add_overflow() helpers to validate the size calculation before
allocation.
Comment 1 Alexander B 2026-03-25 16:43:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026032523-CVE-2026-23280-cd9e@gregkh/T