[Debian-iot-maintainers] Bug#1108789: mbedtls: CVE-2025-49087: Timing side-channel in block cipher decryption with PKCS#7 padding

[Salvatore Bonaccorso]

Source: mbedtls
Version: 3.6.3-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for mbedtls.

CVE-2025-49087[0]:
| Timing side-channel in block cipher decryption with PKCS#7 padding


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-49087
    https://www.cve.org/CVERecord?id=CVE-2025-49087
[1] https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-5.md

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore