Vulnerability · Published Oct 30, 2026 · Assigned by redhat
CVE-2026-115455Gcc: stack overflow in std::bitset on libstdc++
Medium 6.5
In plain English
A medium-severity out-of-bounds write 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 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 75.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gcc-11 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:12 | gcc-12 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:13 | gcc-12 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:14 | gcc-12 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:13 | gcc-13 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:14 | gcc-13 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:13 | gcc-14 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:14 | gcc-14 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:14 | gcc-15 | no fix listed | DEBIAN-CVE-2026-115455 |
| Debian:14 | gcc-16 | no fix listed | DEBIAN-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-10 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-10 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-10-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-10-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-10-cross-mipsen | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-10-cross-mipsen | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-10-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-10-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-11 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-11 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-11 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-11 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-11-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-11-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-11-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-11-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-11-cross-mipsen | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-11-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-11-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-11-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-11-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-12 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-12 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-12 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-12 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-12-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-12-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-12-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-12-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-12-cross-mipsen | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-12-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-12-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-12-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-12-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-13 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-13 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-13 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-13-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-13-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-13-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-13-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-13-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-13-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-3.3 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-3.3 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-9 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-9 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-9-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-9-cross | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-9-cross-mipsen | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-9-cross-mipsen | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-9-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-9-cross-ports | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-arm-none-eabi | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-arm-none-eabi | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-arm-none-eabi | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-arm-none-eabi | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-avr | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-avr | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-avr | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-avr | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-defaults | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-defaults | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-defaults | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-defaults | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-h8300-hms | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-h8300-hms | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-h8300-hms | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-h8300-hms | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-m68hc1x | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-mingw-w64 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-mingw-w64 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-mingw-w64 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-mingw-w64 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-msp430 | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-or1k-elf | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-or1k-elf | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-or1k-elf | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-or1k-elf | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-riscv64-unknown-elf | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-riscv64-unknown-elf | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-riscv64-unknown-elf | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-riscv64-unknown-elf | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-snapshot | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:24.04:LTS | gcc-snapshot | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.04:LTS | gcc-snapshot | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:26.10 | gcc-snapshot | no fix listed | UBUNTU-CVE-2026-115455 |
| Ubuntu:22.04:LTS | gcc-xtensa-lx106 | no fix listed | UBUNTU-CVE-2026-115455 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
References
- RHSA-2026:94989 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-115455 vdb-entry, x_refsource_REDHAT
- RHBZ#2562933 issue-tracking, x_refsource_REDHAT
- https://gcc.gnu.org/cgit/gcc/commit/?id=5d419c69ce2e6b86d7da75f18736904885674219