An update for openssl is now available for openEuler-24.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-4639 Final 1.0 1.0 2026-10-29 Initial 2026-10-29 2026-10-29 openEuler SA Tool V1.0 2026-10-29 openssl security update An update for openssl is now available for openEuler-24.03-LTS-SP3 OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. Security Fix(es): Issue summary: A non-constant-time optimized implementation of scalar point multiplication is used for SM2 private key operations on ARM64 and RISC-V platforms. Impact summary: An attacker able to measure the time taken by, or to observe the cache-line access pattern of SM2 signing or decryption on an affected platform can learn information about the secret scalar. CWE: CWE-208: Observable Timing Discrepancy Description: On ARM64 and RISC-V processors, the SM2 curve uses an optimized scalar multiplication implementation whose conditional branches and table look ups are chosen according to the bits of the secret scalar. The execution time and the cache-access pattern therefore depend on the long-term private key (during SM2 decryption) or the per-signature nonce (during SM2 signature generation), forming a timing and cache side-channel. FIPS Impact: no SM2 is not a FIPS algorithm and the optimized SM2 implementation is not part of the FIPS module. OpenSSL 4.0, 3.6, 3.5 and 3.4 are vulnerable to this issue on AArch64 and RISC-V. OpenSSL 3.0, 1.1.1 and 1.0.2 are not affected by this issue. OpenSSL 4.0 users should upgrade to OpenSSL 4.0.3. OpenSSL 3.6 users should upgrade to OpenSSL 3.6.5. OpenSSL 3.5 users should upgrade to OpenSSL 3.5.9. OpenSSL 3.4 users should upgrade to OpenSSL 3.4.8. This issue was reported on 2 May 2026 by Abhinav Agarwal. It was independently reported on 6 June 2026 by Feng Xue. The fix was developed by Igor Ustinov. -- cut (non-publishing metadata for internal use) -- Reported by: Abhinav Agarwal, Feng Xue Fixed by: Igor Ustinov(CVE-2026-54875) An update for openssl is now available for openEuler-24.03-LTS-SP3. openEuler Security has rated this update as having a security impact of low. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Low openssl https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4639 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-54875 https://nvd.nist.gov/vuln/detail/CVE-2026-54875 openEuler-24.03-LTS-SP3 openssl-3.0.12-55.oe2403sp3.x86_64.rpm openssl-debuginfo-3.0.12-55.oe2403sp3.x86_64.rpm openssl-debugsource-3.0.12-55.oe2403sp3.x86_64.rpm openssl-devel-3.0.12-55.oe2403sp3.x86_64.rpm openssl-libs-3.0.12-55.oe2403sp3.x86_64.rpm openssl-perl-3.0.12-55.oe2403sp3.x86_64.rpm openssl-help-3.0.12-55.oe2403sp3.noarch.rpm openssl-3.0.12-55.oe2403sp3.aarch64.rpm openssl-debuginfo-3.0.12-55.oe2403sp3.aarch64.rpm openssl-debugsource-3.0.12-55.oe2403sp3.aarch64.rpm openssl-devel-3.0.12-55.oe2403sp3.aarch64.rpm openssl-libs-3.0.12-55.oe2403sp3.aarch64.rpm openssl-perl-3.0.12-55.oe2403sp3.aarch64.rpm openssl-3.0.12-55.oe2403sp3.src.rpm Issue summary: A non-constant-time optimized implementation of scalar point multiplication is used for SM2 private key operations on ARM64 and RISC-V platforms. Impact summary: An attacker able to measure the time taken by, or to observe the cache-line access pattern of SM2 signing or decryption on an affected platform can learn information about the secret scalar. CWE: CWE-208: Observable Timing Discrepancy Description: On ARM64 and RISC-V processors, the SM2 curve uses an optimized scalar multiplication implementation whose conditional branches and table look ups are chosen according to the bits of the secret scalar. The execution time and the cache-access pattern therefore depend on the long-term private key (during SM2 decryption) or the per-signature nonce (during SM2 signature generation), forming a timing and cache side-channel. FIPS Impact: no SM2 is not a FIPS algorithm and the optimized SM2 implementation is not part of the FIPS module. OpenSSL 4.0, 3.6, 3.5 and 3.4 are vulnerable to this issue on AArch64 and RISC-V. OpenSSL 3.0, 1.1.1 and 1.0.2 are not affected by this issue. OpenSSL 4.0 users should upgrade to OpenSSL 4.0.3. OpenSSL 3.6 users should upgrade to OpenSSL 3.6.5. OpenSSL 3.5 users should upgrade to OpenSSL 3.5.9. OpenSSL 3.4 users should upgrade to OpenSSL 3.4.8. This issue was reported on 2 May 2026 by Abhinav Agarwal. It was independently reported on 6 June 2026 by Feng Xue. The fix was developed by Igor Ustinov. -- cut (non-publishing metadata for internal use) -- Reported by: Abhinav Agarwal, Feng Xue Fixed by: Igor Ustinov 2026-10-29 CVE-2026-54875 openEuler-24.03-LTS-SP3 Low 3.7 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N openssl security update 2026-10-29 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4639