Description
A flaw was found in pppd. A remote attacker could exploit a buffer overflow vulnerability in the PEAP response handling. By sending a specially crafted PEAP Request packet, an attacker could cause the pppd process to corrupt global static data, leading to incorrect behavior or a system crash.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ppp | 2.5.5-1+1 | — |
| Debian 13 | ppp | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | network-manager-l2tp | No fix yet | — |
| Ubuntu 26.04 LTS | network-manager-l2tp | No fix yet | — |
| Ubuntu 24.04 LTS | network-manager-l2tp | No fix yet | — |
| Ubuntu 22.04 LTS | network-manager-l2tp | No fix yet | — |
| Ubuntu 20.04 LTS | network-manager-l2tp | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | network-manager-l2tp | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | NetworkManager-l2tp | 1.52.6-1.1 | openSUSE-SU-2026:11802-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | ppp | No fix yet | — |
Advisories 1
- openSUSE-SU-2026:11802-1 NetworkManager-applet-l2tp-1.52.6-1.1 on GA media SUSE / openSUSE Security Updates · Sep 18, 2026