Red Hat Security Advisory: gcc security update

Fixed packages 113

Vulnerabilities 3

• Medium 6.2
  CVE-2026-114690

  Gcc: confirmed out-of-bounds read/write in libstdc++ parallel `std

  A flaw was found in GCC. An out-of-bounds memory access vulnerability exists in the libstdc++ parallel search implementation due to an undersized internal buffer. A local attacker can exploit this flaw by providing crafted search data to an application compil…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Oct 30, 2026
• Medium 5.9
  CVE-2026-114691

  Gcc: integer wrap in `std

  A flaw was found in the libstdc++ component of GCC. An attacker who can provide an excessively large element count to a boolean vector (std::vector<bool>) constructor can trigger an integer wrap during internal memory calculations. This issue leaves the conta…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Oct 30, 2026
• Low 3.7
  CVE-2026-115456

  Gcc: out-of-bounds read in std::from_chars

  A flaw was found in gcc. An attacker could cause a Denial of Service (DoS) by passing a string that is not null-terminated to the std::from_chars() function in the libstdc++ library. This issue triggers an out-of-bounds read beyond the allocated buffer, poten…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Oct 30, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2478508
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2478652
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2563044
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_98524.json
• report
  https://access.redhat.com/security/cve/CVE-2026-114690
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-114690
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-114690
• report
  https://access.redhat.com/security/cve/CVE-2026-114691
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-114691
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-114691
• report
  https://access.redhat.com/security/cve/CVE-2026-115456
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-115456
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-115456