Linux Kernel up to 7.1.8 amba-pl011 dmaengine_terminate_sync race condition

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.1.8 and classified as very critical. Affected by this vulnerability is the function dmaengine_terminate_sync of the component amba-pl011. Executing a manipulation can lead to race condition. This vulnerability is tracked as CVE-2026-80737. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Linux Kernel up to 7.1.8. This vulnerability affects the function dmaengine_terminate_sync of the component amba-pl011. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: serial: amba-pl011: synchronize DMA teardown dmaengine_terminate_all() does not wait for a running callback, so the TX callback can still touch the TX buffer after it is freed. The RX poll timer reads the RX buffers without the port lock. Switch to dmaengine_terminate_sync() and delete the RX timer before freeing the buffers.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-80737 since 08/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/07/2026).

The vulnerability scanner Nessus provides a plugin with the ID 342720 (Linux Distros Unpatched Vulnerability : CVE-2026-80737), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.267, 5.15.218, 6.1.185, 6.6.154, 6.12.106, 6.18.45 or 7.1.9 eliminates this vulnerability. Applying the patch a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e/44bd0ecc3444882d08ecfbc2b2418d2f463d3186/f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03/c8c8e895f65fbf71ea6224e27cf8dab91b776e0d/9f6989e477f03a4721d34bb4b09b17accd40283e/5974cb66681eac367107b05924744d7e3b49d41c/fdfb46c387241b4eddd36d746793764413285913/440915499231e9db1c361aa45bb702e8fd3b4a32 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (342720). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.9
VulDB Meta Temp Score: 8.7

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Linux): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 342720
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-80737

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.267/5.15.218/6.1.185/6.6.154/6.12.106/6.18.45/7.1.9
Patch: a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e/44bd0ecc3444882d08ecfbc2b2418d2f463d3186/f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03/c8c8e895f65fbf71ea6224e27cf8dab91b776e0d/9f6989e477f03a4721d34bb4b09b17accd40283e/5974cb66681eac367107b05924744d7e3b49d41c/fdfb46c387241b4eddd36d746793764413285913/440915499231e9db1c361aa45bb702e8fd3b4a32

Timelineinfo

08/26/2026 CVE reserved
09/03/2026 +8 days Advisory disclosed
09/03/2026 +0 days VulDB entry created
09/07/2026 +3 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80737 (🔒)
GCVE (CVE): GCVE-0-2026-80737
GCVE (VulDB): GCVE-100-398332

Entryinfo

Created: 09/03/2026 10:50
Updated: 09/07/2026 01:17
Changes: 09/03/2026 10:50 (59), 09/04/2026 16:06 (2), 09/07/2026 01:17 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!