========================================================================== Ubuntu Security Notice USN-8399-1 June 08, 2026
pillow vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in Pillow. Software Description: - pillow: Python Imaging Library Details: It was discovered that Pillow incorrectly handled large glyph advance values in fonts. An attacker could possibly use this issue to cause Pillow to crash, resulting in a denial of service. (CVE-2026-42308) It was discovered that Pillow incorrectly handled nested coordinate lists in certain APIs. An attacker could possibly use this issue to cause Pillow to crash, resulting in a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42309) It was discovered that Pillow incorrectly handled certain malformed PDF files. An attacker could possibly use this issue to cause Pillow to use excessive resources, leading to a denial of service. (CVE-2026-42310) It was discovered that Pillow incorrectly handled certain malformed PSD files. An attacker could possibly use this issue to cause Pillow to crash, resulting in a denial of service, or to execute arbitrary code. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42311) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS python3-pil 12.1.1-2ubuntu1.2 Ubuntu 25.10 python3-pil 11.3.0-1ubuntu1.3 Ubuntu 24.04 LTS python3-pil 10.2.0-1ubuntu1.2 Ubuntu 22.04 LTS python3-pil 9.0.1-1ubuntu0.4 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8399-1 CVE-2026-42308, CVE-2026-42309, CVE-2026-42310, CVE-2026-42311 Package Information: https://launchpad.net/ubuntu/+source/pillow/12.1.1-2ubuntu1.2 https://launchpad.net/ubuntu/+source/pillow/11.3.0-1ubuntu1.3 https://launchpad.net/ubuntu/+source/pillow/10.2.0-1ubuntu1.2 https://launchpad.net/ubuntu/+source/pillow/9.0.1-1ubuntu0.4
signature.asc
Description: OpenPGP digital signature
