USN-8586-1: libgphoto2 vulnerabilities

Publication date

22 July 2026

Overview

Several security issues were fixed in libgphoto2.


Packages

Details

It was discovered that libgphoto2 did not properly validate buffer
boundaries when parsing EOS image format data. An attacker with physical
access could possibly use this issue to obtain sensitive information.
(CVE-2026-40333)

It was discovered that libgphoto2 did not properly null-terminate buffers
when parsing Canon folder entries. An attacker with physical access could
possibly use this issue to obtain sensitive information. (CVE-2026-40334)

It was discovered that libgphoto2 did not properly validate buffer
boundaries when parsing device property values. An attacker with physical
access could possibly use this issue to obtain sensitive information.
(CVE-2026-40335)

It was discovered that libgphoto2 had a memory leak when parsing Sony
device property descriptors. An attacker with physical access...

It was discovered that libgphoto2 did not properly validate buffer
boundaries when parsing EOS image format data. An attacker with physical
access could possibly use this issue to obtain sensitive information.
(CVE-2026-40333)

It was discovered that libgphoto2 did not properly null-terminate buffers
when parsing Canon folder entries. An attacker with physical access could
possibly use this issue to obtain sensitive information. (CVE-2026-40334)

It was discovered that libgphoto2 did not properly validate buffer
boundaries when parsing device property values. An attacker with physical
access could possibly use this issue to obtain sensitive information.
(CVE-2026-40335)

It was discovered that libgphoto2 had a memory leak when parsing Sony
device property descriptors. An attacker with physical access could
possibly use this issue to cause a denial of service. This issue only
affected Ubuntu 26.04 LTS. (CVE-2026-40336)

It was discovered that libgphoto2 did not properly validate buffer
boundaries when parsing Sony device property enumeration data. An attacker
with physical access could possibly use this issue to obtain sensitive
information. (CVE-2026-40338)

It was discovered that libgphoto2 did not properly validate buffer
boundaries when parsing Sony device property form flags. An attacker with
physical access could possibly use this issue to obtain sensitive
information. (CVE-2026-40339)

It was discovered that libgphoto2 did not properly validate buffer
boundaries when parsing object information. An attacker with physical
access could possibly use this issue to obtain sensitive information.
(CVE-2026-40340)

It was discovered that libgphoto2 did not properly validate buffer
boundaries when parsing EOS focus information. An attacker with physical
access could possibly use this issue to cause libgphoto2 to crash,
resulting in a denial of service. (CVE-2026-40341)


Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
26.04 LTS resolute libgphoto2-6t64 –  2.5.33-1ubuntu1.1
24.04 LTS noble libgphoto2-6t64 –  2.5.31-2.1ubuntu1.1
22.04 LTS jammy libgphoto2-6 –  2.5.27-1ubuntu0.1

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