Red HatCVE-2026-75883
Red Hat ppp: heap buffer overflow
Medium6.8CVE-2026-75883 · Published Sep 18, 2026 · updated Sep 22, 2026
The code in pppd that formats a response to a PEAP Request packet in peap_response() copies an entire TLS record of up to 16384 bytes into the fixed global buffer outpacket_buf without checking the available space and without implementing outgoing PEAP fragmentation. Thus a pppd process connecting to a server which requests PEAP authentication can be induced to corrupt global static data following the outpacket_buf array, most likely causing incorrect behavior or a crash.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| ppp Product | <= 2.5.0 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-122
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|---|---|---|---|
| Sep 18 | Red Hat OpenShift Container Platform 4: server-side request forgery | Critical9.3 | No fix yet |
| Sep 18 | Red Hat Netty: request smuggling | Medium6.5 | No fix yet |
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| Sep 18 | Red Hat cockpit-files. This vulnerability: race condition | Medium6.0 | No fix yet |
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