CVE-2025-68802: Linux kernel · drm/xe: Limit num_syncs to prevent oversized allocations
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 6.17.0-1012.12~24.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:05 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.17.0-1012.12~24.04.1, 6.17.0-1013.13~24.04.1, 6.17.0-22.22~24.04.1 +11
Exploitation evidence
Disclosed: evidence found.
CVE published 13 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linuxpkg:deb/ubuntu/linux@6.17.0-22.22?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws@6.17.0-1012.12?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure@6.17.0-1013.13?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde@6.17.0-1017.17?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp@6.17.0-1012.12?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-oraclepkg:deb/ubuntu/linux-oracle@6.17.0-1011.11?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied. The vulnerability has been fixed by limiting num_syncs to 1024 in the drm/xe subsystem. Users should update to patched kernel versions at or beyond 6.17.0-1012.12~24.04.1 or equivalent. After updating, a system reboot is required to apply the fix.
Description
A vulnerability in the Linux kernel's drm/xe subsystem allowed userspace to specify an excessively large num_syncs value in exec and vm_bind ioctl calls, leading to oversized kernel memory allocations and warnings from the page allocator. This issue was addressed by introducing a limit (DRM_XE_MAX_SYNCS set to 1024) to reject requests exceeding this threshold. The vulnerability affects certain Linux kernel versions prior to 6.17.0-1012.12~24.04.1, 6.17.0-1013.13~24.04.1, 6.17.0-1018.18, 6.17.0-1020.20, and 6.17.0-22.22~24.04.1. A patch is available and should be applied to mitigate the issue.
References
- ubuntu.com/security/CVE-2025-68802 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-68802 (opens in a new tab)
- git.kernel.org/linus/8e461304009135270e9ccf2d7e2dfe29daec9b60 (opens in a new tab)
- git.kernel.org/stable/c/1d200017f55f829b9e376093bd31dfbec92081de (opens in a new tab)
- git.kernel.org/stable/c/8e461304009135270e9ccf2d7e2dfe29daec9b60 (opens in a new tab)
- git.kernel.org/stable/c/e281d1fd6903a081ef023c341145ae92258e38d2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8177-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8177-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8183-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8183-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8245-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8257-1 (opens in a new tab)