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CVE-2026-75883

PPPD buffer overflow in PEAP response code PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
PPP Project / pppaffected 0 through 2.5.0; unaffected 2.5.4

CWE

CWE-122

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.