Linux Kernel up to 7.1.6 buffer overflow

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.
9.5	$5k-$25k	5.79-

Summaryinfo

A vulnerability marked as very critical has been reported in Linux Kernel up to 7.1.6. Affected by this vulnerability is an unknown functionality. The manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2026-68480. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Linux Kernel up to 7.1.6. This issue affects an unknown code. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neutralize the safe return sequence, potentially leading to data leakage through speculative execution. Fixup register state as if the Safe-RET sequence executed successfully by "emulating" it, in a manner of speaking, and avoid executing a RET instruction after returning from the interrupt.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-68480 since 07/30/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/07/2026).

The vulnerability scanner Nessus provides a plugin with the ID 333183 (Linux Distros Unpatched Vulnerability : CVE-2026-68480), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.263, 5.15.214, 6.1.181, 6.6.149, 6.18.43 or 7.1.7 eliminates this vulnerability. Applying the patch 9de1a49e8f1fbf7c372902573a27a97d4ab4d0af/9c0b8105e919be5208c81d5516a194a28c58fe1e/95b08cdd603fe79d2e9d5212fbb13d577c835f4f/608c8f5dccaaf8b8d2b28c0fbdd439d144be62b0/bfe7f9993467ba431b2731437949ac1e2634e771/61649a2d61cb0dbc673f0f232f0f0c298bf50442 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (333183). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.262
• 5.15.213
• 6.1.180
• 6.6.148
• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
• 6.18.4
• 6.18.5
• 6.18.6
• 6.18.7
• 6.18.8
• 6.18.9
• 6.18.10
• 6.18.11
• 6.18.12
• 6.18.13
• 6.18.14
• 6.18.15
• 6.18.16
• 6.18.17
• 6.18.18
• 6.18.19
• 6.18.20
• 6.18.21
• 6.18.22
• 6.18.23
• 6.18.24
• 6.18.25
• 6.18.26
• 6.18.27
• 6.18.28
• 6.18.29
• 6.18.30
• 6.18.31
• 6.18.32
• 6.18.33
• 6.18.34
• 6.18.35
• 6.18.36
• 6.18.37
• 6.18.38
• 6.18.39
• 6.18.40
• 6.18.41
• 6.18.42
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.1.4
• 7.1.5
• 7.1.6

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

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

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 333183
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-68480

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.263/5.15.214/6.1.181/6.6.149/6.18.43/7.1.7
Patch: 9de1a49e8f1fbf7c372902573a27a97d4ab4d0af/9c0b8105e919be5208c81d5516a194a28c58fe1e/95b08cdd603fe79d2e9d5212fbb13d577c835f4f/608c8f5dccaaf8b8d2b28c0fbdd439d144be62b0/bfe7f9993467ba431b2731437949ac1e2634e771/61649a2d61cb0dbc673f0f232f0f0c298bf50442

Timelineinfo

07/30/2026 CVE reserved
08/06/2026 +7 days Advisory disclosed
08/06/2026 +0 days VulDB entry created
08/07/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68480 (🔒)
GCVE (CVE): GCVE-0-2026-68480
GCVE (VulDB): GCVE-100-386705

Entryinfo

Created: 08/06/2026 21:36
Updated: 08/07/2026 12:05
Changes: 08/06/2026 21:36 (57), 08/07/2026 12:05 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

Interested in the pricing of exploits?

See the underground prices here!