Linux Kernel up to 7.0.3 IV Handler algif_aead buffer overflow

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6.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 7.0.3. Affected is the function algif_aead of the component IV Handler. This manipulation causes buffer overflow. This vulnerability is handled as CVE-2026-46028. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 7.0.3. Affected by this vulnerability is the function algif_aead of the component IV Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - snapshot IV for async AEAD requests AF_ALG AEAD AIO requests currently use the socket-wide IV buffer during request processing. For async requests, later socket activity can update that shared state before the original request has fully completed, which can lead to inconsistent IV handling. Snapshot the IV into per-request storage when preparing the AEAD request, so in-flight operations no longer depend on mutable socket state.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-46028 since 05/13/2026. The exploitation appears to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 318604 (Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50299)), 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, 6.18.27, 7.0.4 or 7.1-rc1 eliminates this vulnerability. Applying the patch 08ea39a556ecd39b33c2b4888861001c6706a62e/a920cabdb0b7cf1f4e11a20524253ae5bd09092b/fa0fcec9b49d58e71df7ede91ecd86855f608e85/c2138c9bd02af19e0b407376140cd5435b0d81da/46fdb39e83227b5d39f7c934a0947ea913f13c18/ebc235675f24b0e3f8bc92b8419471d42f837d8f/3d72f8c6490dc79210b64270740cb2a8619361a4/5aa58c3a572b3e3b6c786953339f7978b845cc52 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 (318604). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.253
• 5.15.203
• 6.1.169
• 6.6.136
• 6.12.0
• 6.12.1
• 6.12.2
• 6.12.3
• 6.12.4
• 6.12.5
• 6.12.6
• 6.12.7
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• 6.12.26
• 6.12.27
• 6.12.28
• 6.12.29
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• 6.12.31
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• 6.12.33
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• 6.12.73
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• 6.12.75
• 6.12.76
• 6.12.77
• 6.12.78
• 6.12.79
• 6.12.80
• 6.12.81
• 6.12.82
• 6.12.83
• 6.12.84
• 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
• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

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: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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

Nessus ID: 318604
Nessus Name: Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50299)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.254/5.15.204/6.1.170/6.6.137/6.12.85/6.18.27/7.0.4/7.1-rc1
Patch: 08ea39a556ecd39b33c2b4888861001c6706a62e/a920cabdb0b7cf1f4e11a20524253ae5bd09092b/fa0fcec9b49d58e71df7ede91ecd86855f608e85/c2138c9bd02af19e0b407376140cd5435b0d81da/46fdb39e83227b5d39f7c934a0947ea913f13c18/ebc235675f24b0e3f8bc92b8419471d42f837d8f/3d72f8c6490dc79210b64270740cb2a8619361a4/5aa58c3a572b3e3b6c786953339f7978b845cc52

Timelineinfo

05/13/2026 CVE reserved
05/27/2026 +14 days Advisory disclosed
05/27/2026 +0 days VulDB entry created
06/17/2026 +20 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-46028 (🔒)
GCVE (CVE): GCVE-0-2026-46028
GCVE (VulDB): GCVE-100-366211

Entryinfo

Created: 05/27/2026 17:13
Updated: 06/17/2026 00:25
Changes: 05/27/2026 17:13 (59), 06/04/2026 16:29 (2), 06/17/2026 00:25 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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