Packages
- openssl - Secure Socket Layer (SSL) cryptographic library and tools
- openssl1.0 - Secure Socket Layer (SSL) cryptographic library and tools
Details
USN-8847-1 fixed vulnerabilities in OpenSSL. This update provides the
corresponding fix for OpenSSL on Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,
Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that OpenSSL incorrectly handled certain certificate
revocation list distribution point names. An attacker could possibly use
this issue to cause OpenSSL to consume excessive memory, resulting in a
denial of service. (CVE-2026-35189)
It was discovered that OpenSSL incorrectly implemented scalar
multiplication for non-NIST elliptic curves. An attacker could possibly use
this issue to perform a timing side-channel attack and obtain
sensitive information. This issue only affected Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. (CVE-2026-54872)
It was discovered that OpenSSL incorrectly implemented SM2 signature
...
USN-8847-1 fixed vulnerabilities in OpenSSL. This update provides the
corresponding fix for OpenSSL on Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,
Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that OpenSSL incorrectly handled certain certificate
revocation list distribution point names. An attacker could possibly use
this issue to cause OpenSSL to consume excessive memory, resulting in a
denial of service. (CVE-2026-35189)
It was discovered that OpenSSL incorrectly implemented scalar
multiplication for non-NIST elliptic curves. An attacker could possibly use
this issue to perform a timing side-channel attack and obtain
sensitive information. This issue only affected Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. (CVE-2026-54872)
It was discovered that OpenSSL incorrectly implemented SM2 signature
generation. An attacker could possibly use this issue to perform a
timing side-channel attack and obtain sensitive information. This issue
only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2026-77696)
It was discovered that OpenSSL incorrectly handled DTLS retransmission
of handshake messages. An attacker could possibly use this issue to
cause incorrect handshake behavior or a denial of service.
(CVE-2026-84782)
Update instructions
After a standard system update you need to reboot your computer to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 20.04 LTS focal | libssl1.1 – 1.1.1f-1ubuntu2.24+esm6 | ||
| openssl – 1.1.1f-1ubuntu2.24+esm6 | |||
| 18.04 LTS bionic | libssl1.0.0 – 1.0.2n-1ubuntu5.13+esm7 | ||
| libssl1.1 – 1.1.1-1ubuntu2.1~18.04.23+esm11 | |||
| openssl – 1.1.1-1ubuntu2.1~18.04.23+esm11 | |||
| openssl1.0 – 1.0.2n-1ubuntu5.13+esm7 | |||
| 16.04 LTS xenial | libssl1.0.0 – 1.0.2g-1ubuntu4.20+esm19 | ||
| openssl – 1.0.2g-1ubuntu4.20+esm19 | |||
| 14.04 LTS trusty | libssl1.0.0 – 1.0.1f-1ubuntu2.27+esm17 | ||
| openssl – 1.0.1f-1ubuntu2.27+esm17 | |||
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