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4.12. boost
Updated boost packages that fix one bug are now available for Red Hat Enterprise Linux 5.
The boost packages provide free peer-reviewed portable C++ source libraries with emphasis on libraries which work well with the C++ Standard Library.
Bug Fix
- BZ#727895
- An application compiled against the boost package version prior to 1.33.1-10.el5_7.2, and run with this exact version installed, could be killed by a SIGSEGV signal due to mismatch in the application binary interface (ABI) of the regular expression library. That failure could only be fixed by recompiling the application. This updated package rectifies the ABI changes in aforementioned version of the boost package.Important: any client application which was recompiled against boost version 1.33.1-10.el5_7.2 should be recompiled against this updated package to ensure a stable ABI and avoid any potential incompatibility.
Users of boost are advised to upgrade to these updated packages, which fix this bug.
Updated boost packages that fix one bug are now available for Red Hat Enterprise Linux 5.
The boost package provides free peer-reviewed portable C++ source libraries with emphasis on libraries which work well with the C++ Standard Library.
Bug Fix
- BZ#727895
- Prior to this update, when several regular expression objects were created simultaneously, such as in a multi-threaded program, the construction of one of them sometimes failed. With this update, the object variables have been moved from the shared memory to the stack, thereby making the constructing function thread safe.
Users of boost are advised to upgrade to these updated packages, which fix this bug.
Updated boost packages that fix two security issues and two bugs are now available for Red Hat Enterprise Linux 5.
The Red Hat Security Response Team has rated this update as having low security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links associated with each description below.
The boost packages provide free, peer-reviewed, portable C++ source libraries with emphasis on libraries which work well with the C++ Standard Library.
Security Fixes
- CVE-2008-0171
- Invalid pointer dereference flaws were found in the way the Boost regular expression library processed certain, invalid expressions. An attacker able to make an application using the Boost library process a specially-crafted regular expression could cause that application to crash or, potentially, execute arbitrary code with the privileges of the user running the application.
- CVE-2008-0172
- NULL pointer dereference flaws were found in the way the Boost regular expression library processed certain, invalid expressions. An attacker able to make an application using the Boost library process a specially-crafted regular expression could cause that application to crash.
Red Hat would like to thank Will Drewry for reporting these issues.
Bug Fixes
- BZ#472384
- Prior to this update, the construction of a regular expression object could fail when several regular expression objects were created simultaneously, such as in a multi-threaded program. With this update, the object variables have been moved from the shared memory to the stack. Now, the constructing function is thread safe.
- BZ#567722
- Prior to this update, header files in several Boost libraries contained preprocessor directives that the GNU Compiler Collection (GCC) 4.4 could not handle. This update instead uses equivalent constructs that are standard C.
All users of boost are advised to upgrade to these updated packages, which fix these issues.
