CVE-2026-28386 Out-of-bounds Read in AES-CFB-128 on X86-64 with AVX-512 Support

Issue summary: Applications using AES-CFB128 encryption or decryption on systems with AVX-512 and VAES support can trigger an out-of-bounds read of up to 15 bytes when processing partial cipher blocks. Impact summary: This out-of-bounds read may trigger a crash which leads to Denial of Service fo...

CVE-2026-28386

The CVE CVE-2026-28386 affects OpenSSL’s FIPS module (version 3.6) on x86-64 systems with AVX-512 and VAES. A partial-block processing path in AES-CFB-128 can trigger an out-of-bounds read of up to 15 bytes when the input buffer sits at a page boundary and the next page is unmapped, potentially c...

CVE-2026-28386

Issue summary: Applications using AES-CFB128 encryption or decryption on systems with AVX-512 and VAES support can trigger an out-of-bounds read of up to 15 bytes when processing partial cipher blocks. Impact summary: This out-of-bounds read may trigger a crash which leads to Denial of Service fo...

CVE-2026-28386

Issue summary: Applications using AES-CFB128 encryption or decryption on systems with AVX-512 and VAES support can trigger an out-of-bounds read of up to 15 bytes when processing partial cipher blocks. Impact summary: This out-of-bounds read may trigger a crash which leads to Denial of Service fo...