USN-7299-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain memory operations. An attacker could use these issues to cause the X Server to crash, leading to a denial of service, or possibly execute arbitrary code.
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"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
{
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"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-26594"
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7299-2.json"
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"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
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"cves": [
{
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"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-26594"
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7299-2.json"
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{
"binary_name": "xwayland",
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}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
{
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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"id": "CVE-2025-26594"
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]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7299-2.json"
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"type": "CVSS_V3"
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7299-2.json"