SB2025091831 - Ubuntu update for libyang2

Description

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2023-26917)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the lysp_stmt_validate_value() function in lys_parse_mem.c. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

2) NULL pointer dereference (CVE-ID: CVE-2023-26916)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the lys_parse_mem() function in lys_parse_mem.c. A remote attacker can perform a denial of service attack.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-7752-1