Red HatCVE-2026-95508
Red Hat Enterprise Linux 10: heap buffer overflow
High7.4CVE-2026-95508 · Published Sep 22, 2026
A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. When the host is configured with a small interface MTU, a guest-supplied DHCPv6 CLIENTID option or TFTP blksize option can overflow the reply buffer with attacker-controlled content and length, resulting in denial of service and potentially arbitrary code execution in the host process. The default interface MTU is not affected.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 8 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 9 Product | all versions | No fix yet |
| Red Hat OpenShift Container Platform 4 Product | all versions | No fix yet |
| all versions | No fix yet | |
| all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-787
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 22 | Red Hat Linux kernel: out-of-bounds write | High8.8 | No fix yet |
| Sep 22 | Red Hat rpcbind. This vulnerability: denial of service | High7.5 | No fix yet |
| Sep 22 | Red Hat SSSD.: improper permission handling | Medium5.4 | No fix yet |
| Sep 22 | Red Hat libstdc++. An integer overflow can occur: integer overflow | High7.7 | No fix yet |
| Sep 22 | Red Hat Kerberos federation provider of Keycloak: authentication bypass | Medium6.8 | No fix yet |
| Sep 21 | Red Hat libstoragemgmt: buffer overflow | Medium5.5 | No fix yet |