Skip to content

Check your stack

CVE-2026-115455medium6.5

Gcc: stack overflow in std::bitset on libstdc++

Impact

A flaw in GCC libstdc++ may cause a stack-based buffer overflow when extracting data into a bitset from a wide-character stream, potentially leading to denial of service. The issue affects Red Hat Enterprise Linux 10 and Red Hat Hardened Images. An attacker must be able to supply crafted input to an affected application.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

CVE

What to do

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

redhat guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Red Hat · redhat

Red Hat Enterprise Linux 10

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:10

Red Hat · redhat

Red Hat Enterprise Linux 10

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:10

Red Hat · redhat

Red Hat Enterprise Linux 10

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:10

Red Hat · redhat

Red Hat Enterprise Linux 10

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:10

Red Hat · redhat

Red Hat Enterprise Linux 6

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:6

Red Hat · redhat

Red Hat Enterprise Linux 6

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:6

Red Hat · redhat

Red Hat Enterprise Linux 6

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:6

Red Hat · redhat

Red Hat Enterprise Linux 6

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:6

Red Hat · redhat

Red Hat Enterprise Linux 6

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:6

Red Hat · redhat

Red Hat Enterprise Linux 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:7

Red Hat · redhat

Red Hat Enterprise Linux 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:7

Red Hat · redhat

Red Hat Enterprise Linux 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:7

Red Hat · redhat

Red Hat Enterprise Linux 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:7

Red Hat · redhat

Red Hat Enterprise Linux 8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:8

Red Hat · redhat

Red Hat Enterprise Linux 8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:8

Red Hat · redhat

Red Hat Enterprise Linux 8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:8

Red Hat · redhat

Red Hat Enterprise Linux 8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:8

Red Hat · redhat

Red Hat Enterprise Linux 9

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:9

Red Hat · redhat

Red Hat Enterprise Linux 9

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:9

Red Hat · redhat

Red Hat Enterprise Linux 9

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:9

Red Hat · redhat

Red Hat Enterprise Linux 9

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:9

Red Hat · redhat

Red Hat Enterprise Linux 9

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:9

Red Hat · redhat

Red Hat Hardened Images

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:hummingbird:1

Red Hat · redhat

Red Hat Hardened Images

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:hummingbird:1

Red Hat · redhat

Red Hat OpenShift Container Platform 4

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:openshift:4

Red Hat · redhat

Red Hat OpenShift Container Platform 4

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:openshift:4

Red Hat · redhat

Red Hat OpenShift Container Platform 5

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:openshift:5

Original source 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).

Inside the record

Evidence available

Package identity · not supplied

Version evidence · not supplied

Remediation guidance

Weakness classification

Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-115455

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

Out-of-bounds Write

redhat

Contributing organizations · 1

redhat

Assigning organization

2026-10-30

What changed

No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

3 sources

access.redhat.com/security/cve/CVE-2026-115455

vdb-entryredhat

bugzilla.redhat.com/show_bug.cgi

issue-trackingredhat

gcc.gnu.org/cgit/gcc/commit/

Priority and evidence

Not in CISA KEVNo package fix recorded

KEV coverage does not rule out exploitation.

KEV checked 31/10/2026, 10:20:31 UTC

redhat · CVSS:3.1 · 6.5

Assessment vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: No EPSS estimate available in this record.

Record details

Published: 30/10/2026, 07:13:06 UTC
Modified: 30/10/2026, 07:13:06 UTC
Last imported by cve.new: 30/10/2026, 07:20:53 UTC
Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-115455

Enrichment coverage

NVDNo result

Checked 30/10/2026, 07:25:31 UTC

GHSANo result

Checked 30/10/2026, 07:25:31 UTC

EUVDRefresh failed

Previous evidence retained where available.

EPSSNo result

Checked 30/10/2026, 07:25:31 UTC

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON