Gcc: stack overflow in std::bitset on libstdc++
CVE-2026-115455 is fixed in 41 products on 1 platform, first by RHSA-2026:98648, released November 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.
A flaw was found in GCC libstdc++. When an application extracts data into a bitset from a wide-character stream, internal stack memory allocation fails to properly account for character size and alignment. An attacker capable of supplying crafted input to an affected application could trigger a stack-based buffer overflow leading denial of service (DoS).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gcc · RHEL 10 | 14.4.1-5.el10_3 | RHSA-2026:98648 | Nov 12, 2026 |
| gcc-toolset · RHEL 10 | 16-gcc-0:16.2.1-1.4.el10_3 | RHSA-2026:98640 | Nov 12, 2026 |
| gcc-toolset-15-gcc · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-gcc-c++ · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-gcc-gfortran · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-gcc-plugin-annobin · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-gcc-plugin-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libasan-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libatomic-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libgccjit · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libgccjit-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libitm-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-liblsan-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libquadmath-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libstdc++-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libstdc++-docs · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libtsan-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-libubsan-devel · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-15-offload-nvptx · RHEL 9 | 0:15.2.1-7.4.el9_9 | RHSA-2026:98526 | Nov 12, 2026 |
| gcc-toolset-16-gcc · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-gcc-c++ · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-gcc-gfortran · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-gcc-plugin-annobin · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-gcc-plugin-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libasan-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libatomic-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libgccjit · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libgccjit-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libgdiagnostics-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libitm-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-liblsan-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libquadmath-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libstdc++-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libstdc++-docs · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libtsan-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-libubsan-devel · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| gcc-toolset-16-offload-nvptx · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| libasan8 · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| libgdiagnostics · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| liblsan · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
| libtsan2 · RHEL 9 | 0:16.2.1-1.4.el9_9 | RHSA-2026:98534 | Nov 12, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.