Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2026-43058: media: vidtv: fix pass-by-value structs causing MSAN warnings

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.12% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 1b2820c8a9887981634020db19f1a2425558b88e, 57b01d945ed68cebe486d495dadc4901a96d3aaa, 5f8e73bde67e931468bc2a1860d78d72f0c6ba41; azl3 kernel 6.6.134.1-2 on Azure Linux 3.0 6.6.137.1-2.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1b2820c8a9887981634020db19f1a2425558b88e, 57b01d945ed68cebe486d495dadc4901a96d3aaa, 5f8e73bde67e931468bc2a1860d78d72f0c6ba41; azl3 kernel 6.6.134.1-2 on Azure Linux 3.0 6.6.137.1-2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 2, 2026
Updated
Jun 17, 2026
EPSS
0.1% · 1th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-43058

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.10 and later · before 6.6.136
  • linux linux kernel6.7 and later · before 6.12.83
  • linux linux kernel6.13 and later · before 6.18.24
  • linux linux kernel6.19 and later · before 6.19.14
  • linux linux kernel7.0 and later · before 7.0.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.10affected
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before a876d72ceba7fe5444005239f363c105767e0ecfaffected · git
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before a73f84a30975e6c4ae06efd500d31c82564dba10affected · git
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before c034d8094fee474eb94142c17643eee2919079b7affected · git
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before e3957eb26a3d570aefc6bb184fa8b8a1e9a4e508affected · git
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before be57e52e27c7cbfb400a8f255e475cbcff242baaaffected · git
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before 6d75a9ec5bdb8cf8382eaf8f8fe831ba7d58a9d4affected · git
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before 57b01d945ed68cebe486d495dadc4901a96d3aaaaffected · git
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before 1b2820c8a9887981634020db19f1a2425558b88eaffected · git
    • f90cf6079bf67988f8b1ad1ade70fc89d0080905 and later · before 5f8e73bde67e931468bc2a1860d78d72f0c6ba41affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.19.14-16.19.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-43056May 1, 2026 · net: mana: fix use-after-free in add_adev() error path
    31Monitor
  • ← EarlierCVE-2026-43057May 1, 2026 · net: correctly handle tunneled traffic on IPV6_CSUM GSO fallback
    30Monitor
  • Later →CVE-2026-43061May 5, 2026 · serial: 8250: Fix TX deadlock when using DMA
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux1b2820c8a9887981634020db19f1a2425558b88eVendor (CNA)
Linux Linux57b01d945ed68cebe486d495dadc4901a96d3aaaVendor (CNA)
Linux Linux5f8e73bde67e931468bc2a1860d78d72f0c6ba41Vendor (CNA)
Linux Linux6d75a9ec5bdb8cf8382eaf8f8fe831ba7d58a9d4Vendor (CNA)
Linux Linuxa73f84a30975e6c4ae06efd500d31c82564dba10Vendor (CNA)
Linux Linuxa876d72ceba7fe5444005239f363c105767e0ecfVendor (CNA)
Linux Linuxbe57e52e27c7cbfb400a8f255e475cbcff242baaVendor (CNA)
Linux Linuxc034d8094fee474eb94142c17643eee2919079b7Vendor (CNA)
Linux Linuxe3957eb26a3d570aefc6bb184fa8b8a1e9a4e508Vendor (CNA)
azl3 kernel 6.6.134.1-2 on Azure Linux 3.06.6.137.1-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.176-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records