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Vulnerability · Published Oct 30, 2026 · Assigned by redhat

CVE-2026-115456Gcc: out-of-bounds read in std::from_chars

Low 3.7

In plain English

A low-severity out-of-bounds read in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).

Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.2%top 87.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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, potentially leading to invalid data parsing or an application crash.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:22.04:LTSgcc-10no fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-10no fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-10-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-10-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-10-cross-mipsenno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-10-cross-mipsenno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-10-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-10-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-11no fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-11no fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-11no fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-11no fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-11-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-11-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-11-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-11-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-11-cross-mipsenno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-11-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-11-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-11-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-11-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-12no fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-12no fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-12no fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-12no fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-12-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-12-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-12-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-12-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-12-cross-mipsenno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-12-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-12-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-12-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-12-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-13no fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-13no fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-13no fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-13-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-13-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-13-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-13-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-13-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-13-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-3.3no fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-3.3no fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-9no fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-9no fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-9-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-9-crossno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-9-cross-mipsenno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-9-cross-mipsenno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-9-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-9-cross-portsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-arm-none-eabino fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-arm-none-eabino fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-arm-none-eabino fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-arm-none-eabino fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-avrno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-avrno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-avrno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-avrno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-defaultsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-defaultsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-defaultsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-defaultsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-h8300-hmsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-h8300-hmsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-h8300-hmsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-h8300-hmsno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-m68hc1xno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-mingw-w64no fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-mingw-w64no fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-mingw-w64no fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-mingw-w64no fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-msp430no fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-or1k-elfno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-or1k-elfno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-or1k-elfno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-or1k-elfno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-riscv64-unknown-elfno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-riscv64-unknown-elfno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-riscv64-unknown-elfno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-riscv64-unknown-elfno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-snapshotno fix listedUBUNTU-CVE-2026-115456
Ubuntu:24.04:LTSgcc-snapshotno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.04:LTSgcc-snapshotno fix listedUBUNTU-CVE-2026-115456
Ubuntu:26.10gcc-snapshotno fix listedUBUNTU-CVE-2026-115456
Ubuntu:22.04:LTSgcc-xtensa-lx106no fix listedUBUNTU-CVE-2026-115456

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 5 see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

References