Linux Kernel up to 7.0.0 media vidtv_ts_null_write_into stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.6.135/6.12.82/6.18.23/6.19.13/7.0.0. Impacted is the function vidtv_ts_null_write_into of the component media. The manipulation results in stack-based overflow. This vulnerability is identified as CVE-2026-43058. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.135/6.12.82/6.18.23/6.19.13/7.0.0. It has been classified as critical. Affected is the function vidtv_ts_null_write_into of the component media. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix pass-by-value structs causing MSAN warnings vidtv_ts_null_write_into() and vidtv_ts_pcr_write_into() take their argument structs by value, causing MSAN to report uninit-value warnings. While only vidtv_ts_null_write_into() has triggered a report so far, both functions share the same issue. Fix by passing both structs by const pointer instead, avoiding the stack copy of the struct along with its MSAN shadow and origin metadata. The functions do not modify the structs, which is enforced by the const qualifier.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-43058 since 05/01/2026. The exploitability is told to be easy. 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 06/04/2026).

The vulnerability scanner Nessus provides a plugin with the ID 311785 (Linux Distros Unpatched Vulnerability : CVE-2026-43058), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.136, 6.12.83, 6.18.24, 6.19.14, 7.0.1 or 7.1-rc1 eliminates this vulnerability. Applying the patch e3957eb26a3d570aefc6bb184fa8b8a1e9a4e508/be57e52e27c7cbfb400a8f255e475cbcff242baa/6d75a9ec5bdb8cf8382eaf8f8fe831ba7d58a9d4/57b01d945ed68cebe486d495dadc4901a96d3aaa/1b2820c8a9887981634020db19f1a2425558b88e/5f8e73bde67e931468bc2a1860d78d72f0c6ba41 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 databases at Tenable (311785) and EUVD (EUVD-2026-26751). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

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

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
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: 311785
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-43058

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.136/6.12.83/6.18.24/6.19.14/7.0.1/7.1-rc1
Patch: e3957eb26a3d570aefc6bb184fa8b8a1e9a4e508/be57e52e27c7cbfb400a8f255e475cbcff242baa/6d75a9ec5bdb8cf8382eaf8f8fe831ba7d58a9d4/57b01d945ed68cebe486d495dadc4901a96d3aaa/1b2820c8a9887981634020db19f1a2425558b88e/5f8e73bde67e931468bc2a1860d78d72f0c6ba41

Timelineinfo

05/01/2026 CVE reserved
05/02/2026 +1 days Advisory disclosed
05/02/2026 +0 days VulDB entry created
06/04/2026 +33 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43058 (🔒)
GCVE (CVE): GCVE-0-2026-43058
GCVE (VulDB): GCVE-100-360816
EUVD: 🔒

Entryinfo

Created: 05/02/2026 10:00
Updated: 06/04/2026 08:15
Changes: 05/02/2026 10:00 (59), 05/02/2026 12:10 (1), 05/03/2026 17:41 (2), 06/04/2026 08:15 (11)
Complete: 🔍
Cache ID: 216::103

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