SB2025120527 - Anolis OS update for tigervnc

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Heap-based buffer overflow (CVE-ID: CVE-2024-31082)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a boundary error within the ProcAppleDRICreatePixmap() function. A local user can trigger a heap-based buffer overflow and read system memory.

Note, the vulnerability affects only Xquartz server for MacOS systems.

2) Use-after-free (CVE-ID: CVE-2025-62229)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error during XPresentNotify structures creation when processing and adding the notifications after presenting a pixmap. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges. 

3) Use-after-free (CVE-ID: CVE-2025-62230)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the XkbRemoveResourceClient() function when removing Xkb resources for the client. A local user can execute arbitrary code with elevated privileges. 

4) Integer overflow (CVE-ID: CVE-2025-62231)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow within the Xkb extension XkbSetCompatMap(). A local user can trigger an integer overflow and execute arbitrary code on the target system.

Remediation

Install update from vendor's website.

References

• https://anas.openanolis.cn/errata/detail/ANSA-2025:0867