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CVE-2026-49420

Buffer overflow in libalias RTSP handler PUBLISHED

Description (CNA)

The RTSP handler in libalias rewrote outgoing packets into a fixed-length stack buffer without checking whether the rewritten data fit in the buffer, or whether the result fit back in the original packet. A host sending crafted RTSP traffic from inside a NAT gateway using libalias can overflow a stack buffer, potentially achieving remote code execution in the kernel (when using ipfw(4) NAT) or in the natd(8) process (which generally runs as the root user).

Affected (CNA)

Vendor / productVersions
FreeBSD / FreeBSDaffected 15.1-RELEASE before p1; affected 15.0-RELEASE before p11; affected 14.4-RELEASE before p7; affected 14.3-RELEASE before p16

CWE

CWE-121

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.