CVE-2025-49179

Publication date 17 June 2025

Last updated 18 June 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.6 · Medium

Score breakdown

A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.

Read the notes from the security team

Status

Package Ubuntu Release Status
xorg 25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
xorg-hwe-16.04 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
16.04 LTS xenial
Not affected
xorg-hwe-18.04 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
18.04 LTS bionic
Not affected
xorg-server 25.04 plucky
Fixed 2:21.1.16-1ubuntu1.1
24.10 oracular
Fixed 2:21.1.13-2ubuntu1.4
24.04 LTS noble
Fixed 2:21.1.12-1ubuntu1.4
22.04 LTS jammy
Fixed 2:21.1.4-2ubuntu1.7~22.04.15
20.04 LTS focal
Fixed 2:1.20.13-1ubuntu1~20.04.20+esm1
18.04 LTS bionic
Fixed 2:1.19.6-1ubuntu4.15+esm13
16.04 LTS xenial
Fixed 2:1.18.4-0ubuntu0.12+esm18
14.04 LTS trusty
Needs evaluation
xorg-server-hwe-16.04 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
16.04 LTS xenial
Fixed 2:1.19.6-1ubuntu4.1~16.04.6+esm10
xorg-server-hwe-18.04 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
18.04 LTS bionic
Fixed 2:1.20.8-2ubuntu2.2~18.04.11+esm5
xwayland 25.04 plucky
Fixed 2:24.1.6-1ubuntu0.1
24.10 oracular
Fixed 2:24.1.2-1ubuntu0.6
24.04 LTS noble
Fixed 2:23.2.6-1ubuntu0.6
22.04 LTS jammy
Fixed 2:22.1.1-1ubuntu0.19

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Notes

mdeslaur

xorg server is actually the xorg-server package the xorg package only contains docs xwayland package contains parts of xorg-server

Severity score breakdown

Parameter Value
Base score 6.6 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-7573-2
    • X.Org X Server vulnerabilities
    • 18 June 2025
    • USN-7573-1
    • X.Org X Server vulnerabilities
    • 17 June 2025

Other references