Linux Kernel up to 6.12.77/6.18.18/6.19.8 xe_sync_entry_parse allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.12.77/6.18.18/6.19.8. This affects the function xe_sync_entry_parse. Executing a manipulation can lead to allocation of resources. The identification of this vulnerability is CVE-2026-43395. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.77/6.18.18/6.19.8. It has been declared as critical. This vulnerability affects the function xe_sync_entry_parse. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: drm/xe/sync: Cleanup partially initialized sync on parse failure xe_sync_entry_parse() can allocate references (syncobj, fence, chain fence, or user fence) before hitting a later failure path. Several of those paths returned directly, leaving partially initialized state and leaking refs. Route these error paths through a common free_sync label and call xe_sync_entry_cleanup(sync) before returning the error. (cherry picked from commit f939bdd9207a5d1fc55cced5459858480686ce22)

The advisory is available at git.kernel.org. This vulnerability was named CVE-2026-43395 since 05/01/2026. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 313439 (Linux Distros Unpatched Vulnerability : CVE-2026-43395), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.12.78, 6.18.19 or 6.19.9 eliminates this vulnerability. Applying the patch 91c228f96fcfacc2341a58815b1da8c69da94ebb/af65cd1853599394b94201c08bed7a46717db478/f0af63ffa06306f12592cd3919fad6957b425e1b/1bfd7575092420ba5a0b944953c95b74a5646ff8 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (313439). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 313439
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-43395

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.78/6.18.19/6.19.9
Patch: 91c228f96fcfacc2341a58815b1da8c69da94ebb/af65cd1853599394b94201c08bed7a46717db478/f0af63ffa06306f12592cd3919fad6957b425e1b/1bfd7575092420ba5a0b944953c95b74a5646ff8

Timelineinfo

05/01/2026 CVE reserved
05/08/2026 +7 days Advisory disclosed
05/08/2026 +0 days VulDB entry created
05/21/2026 +13 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43395 (🔒)
GCVE (CVE): GCVE-0-2026-43395
GCVE (VulDB): GCVE-100-362194

Entryinfo

Created: 05/08/2026 18:21
Updated: 05/21/2026 23:35
Changes: 05/08/2026 18:21 (58), 05/09/2026 13:55 (2), 05/21/2026 23:35 (10)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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