NULL pointer dereference in mbed TLS - CVE-2025-48965
Published: July 7, 2025
Vulnerability identifier: #VU112442
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2025-48965
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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 mbedtls_asn1_store_named_data() function. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Affected software
mbed TLS
Ubuntu
Fedora
mbedtls (Ubuntu package)
dolphin-emu
Ubuntu
Fedora
mbedtls (Ubuntu package)
dolphin-emu
How to mitigate CVE-2025-48965
Install updates from vendor's website.
mbed TLS - update to 3.6.4
mbedtls (Ubuntu package) - addressed in versions 2.8.0-1ubuntu0.1~esm1, 2.16.4-1ubuntu2+esm1, 2.28.0-1ubuntu0.1~esm1, 2.28.8-1ubuntu0.1~esm1
dolphin-emu - update to 2503a-4.fc42
mbedtls (Ubuntu package) - addressed in versions 2.8.0-1ubuntu0.1~esm1, 2.16.4-1ubuntu2+esm1, 2.28.0-1ubuntu0.1~esm1, 2.28.8-1ubuntu0.1~esm1
dolphin-emu - update to 2503a-4.fc42