Linux Kernel up to 6.19.11 crypto privilege escalation

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.
6.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.19.11. This vulnerability affects unknown code of the component crypto. This manipulation causes an unknown weakness. The identification of this vulnerability is CVE-2026-43033. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.19.11. Affected by this vulnerability is some unknown functionality of the component crypto. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption When decrypting data that is not in-place (src != dst), there is no need to save the high-order sequence bits in dst as it could simply be re-copied from the source. However, the data to be hashed need to be rearranged accordingly. Thanks,

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-43033 since 05/01/2026. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 314331 (Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50262)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.254, 5.15.204, 6.1.170, 6.6.137, 6.12.85, 6.18.22 or 6.19.12 eliminates this vulnerability. Applying the patch 8c62f618576519dbed6816fafc623ce592953025/d589abd8b019b07075fda255ceab8c8e950cdb3f/5466e7d0cd9e4f9cef9d8f18f18b60e7bc1c77e5/d0c4ff6812386880f30bc64c2921299cc4d7b47f/89fe118b6470119b20c04afc36e45b81a69ea11f/153d5520c3f9fd62e71c7e7f9e34b59cf411e555/cded4002d22177e8deaca1f257ecd932c9582b6b/e02494114ebf7c8b42777c6cd6982f113bfdbec7 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 (314331). Several companies clearly confirm that VulDB is the primary source for best 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: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 314331
Nessus Name: Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50262)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.254/5.15.204/6.1.170/6.6.137/6.12.85/6.18.22/6.19.12
Patch: 8c62f618576519dbed6816fafc623ce592953025/d589abd8b019b07075fda255ceab8c8e950cdb3f/5466e7d0cd9e4f9cef9d8f18f18b60e7bc1c77e5/d0c4ff6812386880f30bc64c2921299cc4d7b47f/89fe118b6470119b20c04afc36e45b81a69ea11f/153d5520c3f9fd62e71c7e7f9e34b59cf411e555/cded4002d22177e8deaca1f257ecd932c9582b6b/e02494114ebf7c8b42777c6cd6982f113bfdbec7

Timelineinfo

05/01/2026 Advisory disclosed
05/01/2026 +0 days CVE reserved
05/01/2026 +0 days VulDB entry created
07/17/2026 +77 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43033 (🔒)
GCVE (CVE): GCVE-0-2026-43033
GCVE (VulDB): GCVE-100-360649

Entryinfo

Created: 05/01/2026 17:46
Updated: 07/17/2026 11:18
Changes: 05/01/2026 17:46 (57), 05/13/2026 22:01 (2), 07/17/2026 11:18 (11)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!