Medium [CVE-2026-74419] Adjust size for copy_to_user
This medium-severity Red Hat Linux advisory covers CVE-2026-74419.
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Summary
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Adjust size for copy_to_user() The amount of data returned to user space should be limited by the buffer size provided by the application. If the buffer is smaller than the data size, return only the portion that fits instead of failing.
This vulnerability occurs due to improper handling of user-provided buffer sizes when copying data from kernel space to user space. A local attacker could exploit this by providing a buffer smaller than the expected data size, potentially leading to information disclosure of sensitive kernel memory or a denial of service.
Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-125.
Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 16 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 16 days ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 16 days ago·verify at source
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