RLSA-2026:99632: Moderate: gcc-toolset-15-gcc security update

Published Nov 13, 2026
·
Updated

The gcc-toolset-15-gcc package contains the GNU Compiler Collection version 15.

Security Fix(es):

gcc: Integer wrap in std (CVE-2026-114691)

gcc: Confirmed out-of-bounds read/write in libstdc++ parallel std (CVE-2026-114690)

gcc: Stack overflow in std::bitset on libstdc++ (CVE-2026-115455)

gcc: Out-of-bounds read in std::fromchars (CVE-2026-115456)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software

28 affected componentsFixes available
rocky-linux/gcc-toolset-15-gcc<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-c++<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-c++-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-gfortran<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-gfortran-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-plugin-annobin<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-plugin-annobin-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-plugin-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-gcc-plugin-devel-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libasan-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libatomic-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libgccjit<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libgccjit-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libgccjit-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libitm-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-liblsan-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libstdc++-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libstdc++-docs<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libtsan-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libubsan-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/libasan8<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/libasan8-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/libtsan2<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/libtsan2-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-libquadmath-devel<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-offload-nvptx<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10
rocky-linux/gcc-toolset-15-offload-nvptx-debuginfo<0:15.2.1-7.3.el8_10
0:15.2.1-7.3.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  2. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-c++ to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  3. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-c++-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  4. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  5. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-gfortran to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  6. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-gfortran-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  7. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-plugin-annobin to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  8. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-plugin-annobin-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  9. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-plugin-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  10. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-gcc-plugin-devel-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  11. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libasan-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  12. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libatomic-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  13. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libgccjit to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  14. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libgccjit-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  15. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libgccjit-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  16. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libitm-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  17. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-liblsan-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  18. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libstdc++-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  19. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libstdc++-docs to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  20. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libtsan-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  21. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libubsan-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  22. Upgrade

    Upgrade rocky-linux/libasan8 to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  23. Upgrade

    Upgrade rocky-linux/libasan8-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  24. Upgrade

    Upgrade rocky-linux/libtsan2 to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  25. Upgrade

    Upgrade rocky-linux/libtsan2-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  26. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-libquadmath-devel to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  27. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-offload-nvptx to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10
  28. Upgrade

    Upgrade rocky-linux/gcc-toolset-15-offload-nvptx-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:15.2.1-7.3.el8_10

Event History

Nov 13, 2026
Advisory Published
via OSV·06:01 AM
Data Sourced
via OSV·06:01 AM
DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

Which installed packages should be included in triage?

Review systems with gcc-toolset-15-gcc installed, including the C++, GFortran, annobin plugin, and corresponding debuginfo packages listed in the advisory. The reported issues include libstdc++ behavior affecting parallel std operations, std::bitset, and std::from_chars.

2

What does the provided severity vector indicate about exploitation requirements?

The advisory’s CVSS vector indicates network attack access, no required privileges, and no user interaction. It also rates attack complexity as high, so exploitation requires conditions beyond simply reaching a network-accessible target.

3

Can the affected or fixed package version be determined from this advisory data?

No. The provided information identifies affected package names but does not provide installed-version ranges or fixed package versions, so version-level exposure cannot be confirmed from this data alone.

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