Thonsun

**Name of the Vulnerable Software and Affected Versions** libyang versions 2.0.164 through 2.1.30 **Description** The issue is related to a NULL pointer dereference in the function `lysp stmt validate value` at `lys parse mem.c`. This problem can be triggered, potentially leading to unintended behavior or crashes. No information is provided about the estimated number of potentially affected devices worldwide or real-world incidents where this issue was exploited. **Recommendations** For libyang versions 2.0.164 through 2.1.30, consider updating to a version that contains a fix for this issue, as no specific workaround or mitigation measures are provided in the given information. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** libyang versions 2.0.164 through 2.1.30 **Description** The issue is related to a NULL pointer dereference in the lys parse mem() function of the libyang library, which is used for YANG data modeling language parsing. This could allow a remote attacker to cause a denial of service when checking if the mod->revision value is NULL. **Recommendations** For versions 2.0.164 through 2.1.30, consider disabling the lys parse mem() function as a temporary workaround until a patch is available. Restrict access to the lys parse mem.c module to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.