medium · CVSS 5.5

CVE-2026-6844

Binutils: binutils: denial of service vulnerabilities in readelf via crafted elf files

Published 22 Apr 2026 · Source updated 6 Nov 2026 · Retrieved 2026-11-06 07:47 UTC

Monitor this CVE ↗Full CVE monitoring on Pro and Business

What happened?

A flaw was found in the `readelf` utility of the binutils package. A local attacker could exploit two Denial of Service (DoS) vulnerabilities by providing a specially crafted Executable and Linkable Format (ELF) file. One vulnerability, a resource exhaustion (CWE-400), can lead to an out-of-memory condition. The other, a null pointer dereference (CWE-476), can cause a segmentation fault. Both issues can result in the `readelf` utility becoming unresponsive or crashing, leading to a denial of service.

Description supplied by CVE Program. Formatting is simplified; follow the original advisory for full details.

Affected software and versions

Source-provided software and version information
Software	Version information	Fixed version
binutilsRed Hat	Default status: affected	See vendor advisory
gcc-toolset-15-binutilsRed Hat	Default status: affected	See vendor advisory
gdbRed Hat	Default status: affected	See vendor advisory
mingw-binutilsRed Hat	Default status: affected	See vendor advisory
binutilsRed Hat	Default status: affected	See vendor advisory
binutilsRed Hat	Default status: affected	See vendor advisory
gcc-toolset-14-binutilsRed Hat	Default status: affected	See vendor advisory
gcc-toolset-14-gdbRed Hat	Default status: affected	See vendor advisory
gcc-toolset-15-binutilsRed Hat	Default status: affected	See vendor advisory
gcc-toolset-15-gdbRed Hat	Default status: affected	See vendor advisory
gdbRed Hat	Default status: affected	See vendor advisory
mingw-binutilsRed Hat	Default status: affected	See vendor advisory
binutilsRed Hat	Default status: affected	See vendor advisory
gcc-toolset-14-binutilsRed Hat	Default status: affected	See vendor advisory
gcc-toolset-15-binutilsRed Hat	Default status: affected	See vendor advisory
gdbRed Hat	Default status: affected	See vendor advisory
mingw-binutilsRed Hat	Default status: affected	See vendor advisory
binutilsRed Hat	Default status: affected	See vendor advisory
rhoai/odh-dashboard-rhel9Red Hat	Default status: unknown	See vendor advisory
openshift/ose-rhel-coreos-8Red Hat	Default status: affected	See vendor advisory
openshift/ose-rhel-coreos-9Red Hat	Default status: affected	See vendor advisory

Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.

Is it being exploited?

This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.

CISA data retrieved 2026-11-06 16:38 UTC. Check CISA ↗

How to respond

Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.

Sources and remediation references

This public advisory does not determine whether a particular server is affected. Records are refreshed as sources change; verify urgent decisions against the original advisory.

← Browse the public CVE feed