CVE-2020-35519

First published: Wed Dec 16 2020(Updated: )

An out-of-bounds (OOB) memory access flaw was found in x25_bind in net/x25/af_x25.c in the Linux kernel version v5.12-rc5. A bounds check failure allows a local attacker with a user account on the system to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system's integrity and availability. As .x25_addr[] array comes from the user and is not necessarily NUL terminated. Using strnlen() instead of strlen() will prevent a read overflow problem.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

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