SB2026102643 - Anolis OS update for xorg-x11-server-Xwayland
Published: October 26, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 vulnerabilities.
1) Double free (CVE-ID: CVE-2026-88812)
CWE-ID: CWE-415 - Double Free
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to escalate privileges on the target system.
The vulnerability exists due to a boundary error within the handling of SetGeometry requests. A local user can pass specially crafted data to the application, trigger double free error and gain elevated privileges on the system.
2) Use-after-free (CVE-ID: CVE-2026-93515)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the handling of present_window_priv objects. A local user can gain access to sensitive information on the system.
3) Heap-based buffer overflow (CVE-ID: CVE-2026-93519)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the input_constrain_cursor function. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.
4) Heap-based buffer overflow (CVE-ID: CVE-2026-93520)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the XkbChangeKeycodeRange function. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.
5) Heap-based buffer overflow (CVE-ID: CVE-2026-93521)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the RRChangeProviderProperty function. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.
6) Heap-based buffer overflow (CVE-ID: CVE-2026-93523)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the handling of modifier fields. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.
7) Out-of-bounds read (CVE-ID: CVE-2026-93524)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the handling of XkbSetMap requests. A local user can trigger an out-of-bounds read error and read contents of memory on the system.
8) Use-after-free (CVE-ID: CVE-2026-93536)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the handling of Window objects. A local user can gain access to sensitive information on the target system.
Remediation
Install update from vendor's website.