Description
Race condition in a certain Red Hat patch to the PRNG lock implementation in the ssleay_rand_bytes function in OpenSSL, as distributed in openssl-1.0.1e-25.el7 in Red Hat Enterprise Linux (RHEL) 7 and other products, allows remote attackers to cause a denial of service (application crash) by establishing many TLS sessions to a multithreaded server, leading to use of a negative value for a certain length field.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | openssl +4 | 1:1.0.1e-42.ael7b_1.8 | RHSA-2015:1115 |
| RHEL 6 | openssl +3 | 1.0.1e-30.el6_6.11 | RHSA-2015:1115 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 SP1 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | compat-openssl098 | 0.9.8j-78.1 | SUSE-SU-2015:1150-1 |
| SLES 12 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | openssl | 1.0.1i-25.1 | SUSE-SU-2015:1143-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 SP1 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | openssl | 1.0.1i-25.1 | SUSE-SU-2015:1143-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | openssl +4 | 1:1.0.1e-42.el7_1.8 | ELSA-2015-1115 |
Advisories 6
- RHSA-2015:1115 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- SUSE-SU-403 Forbidden-1 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1143-1 Security update for openssl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-403 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1150-1 Security update for compat-openssl098 SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2015-1115 Moderate: openssl security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 15, 2015
References
- SUSE-SU-2015:1184 vendor-advisory
- 1032587 vdb-entry
- SUSE-SU-2015:1150 vendor-advisory
- RHSA-2015:1115 vendor-advisory
- SUSE-SU-2015:1182 vendor-advisory
- SUSE-SU-2015:1143 vendor-advisory
- 75219 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1225994
- RHSA-2016:2957 vendor-advisory
- openSUSE-SU-2015:1139 vendor-advisory