SB2026092045 - openEuler 22.03 LTS SP4 update for edk2

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds write (CVE-ID: CVE-2026-63072)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds write in OpenSSL CMS decryption key unwrapping logic when decrypting a crafted CMS message through CMS_decrypt(). A remote attacker can supply a crafted CMS message to cause a denial of service.

The issue causes a deterministic 8-byte heap write immediately past the allocation when the key-wrap OID is changed to select the padded variant.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3922