Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2026-31405: media: dvb-net: fix OOB access in ULE extension header tables

Noroxi assessment

Priority: Monitor (action score 39/100)

  • 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: 0.56% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 145e50c2c700fa52b840df7bab206043997dd18e, 1a6da3dbb9985d00743073a1cc1f96e59f5abc30, 24d87712727a5017ad142d63940589a36cd25647.

Low priority for now. Upgrade to Linux Linux 145e50c2c700fa52b840df7bab206043997dd18e, 1a6da3dbb9985d00743073a1cc1f96e59f5abc30, 24d87712727a5017ad142d63940589a36cd25647 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: dvb-net: fix OOB access in ULE extension header tables The ule_mandatory_ext_handlers[] and ule_optional_ext_handlers[] tables in handle_one_ule_extension() are declared with 255 elements (valid indices 0-254), but the index htype is derived from network-controlled data as (ule_sndu_type & 0x00FF), giving a range of 0-255. When htype equals 255, an out-of-bounds read occurs on the function pointer table, and the OOB value may be called as a function pointer. Add a bounds check on htype against the array size before either table is accessed. Out-of-range values now cause the SNDU to be discarded.

CriticalCVSS 9.8 · v3.1—No exploit Fix available
Published
Apr 6, 2026
Updated
Aug 5, 2026
EPSS
0.5% · 46th percentile

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CNA vs NVD score

NVD
—
CNA · Linux
9.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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-2026-31405

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 kernel2.6.12.1 and later · before 5.10.253
  • linux linux kernel5.11 and later · before 5.15.203
  • linux linux kernel5.16 and later · before 6.1.167
  • linux linux kernel6.2 and later · before 6.6.130
  • linux linux kernel6.7 and later · before 6.12.78
  • linux linux kernel6.13 and later · before 6.18.19
  • linux linux kernel6.19 and later · before 6.19.9
  • linux linux kernel2.6.12
  • linux linux kernel7.0

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

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before e51238718217c4abdb3ccc3b0c0cde265c7ec629affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before b2bd2ee73b697c177157bba534e1b1064c2e66a0affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 29ef43ceb121d67b87f4cbb08439e4e9e732eff8affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 1a6da3dbb9985d00743073a1cc1f96e59f5abc30affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 145e50c2c700fa52b840df7bab206043997dd18eaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 8bde543d2a5f935ba2a6a6325a2e02f8a9256fbeaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before f2b65dcb78c8990e4c68a906627433be1fe38a92affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 24d87712727a5017ad142d63940589a36cd25647affected · git
    • before 2.6.12not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.170-16.1.170-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.19.10-16.19.10-1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-64kbbefore 5.14.21-150400.24.222.15.14.21-150400.24.222.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-docsbefore 5.14.21-150400.24.222.15.14.21-150400.24.222.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-obs-buildbefore 5.14.21-150400.24.222.15.14.21-150400.24.222.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-symsbefore 5.14.21-150400.24.222.15.14.21-150400.24.222.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-64kbbefore 5.14.21-150500.55.172.25.14.21-150500.55.172.2
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-docsbefore 5.14.21-150500.55.172.15.14.21-150500.55.172.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-obs-buildbefore 5.14.21-150500.55.172.25.14.21-150500.55.172.2
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-symsbefore 5.14.21-150500.55.172.15.14.21-150500.55.172.1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.317.14.12.14-122.317.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_84before 1-8.7.11-8.7.1
SUSE:Linux Enterprise Live Patching 15 SP4kernel-livepatch-SLE15-SP4_Update_55before 1-150400.9.3.11-150400.9.3.1
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_42before 1-150500.11.3.21-150500.11.3.2
SUSE:Linux Enterprise Live Patching 15 SP6kernel-defaultbefore 6.4.0-150600.23.115.16.4.0-150600.23.115.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_27before 1-150600.13.3.11-150600.13.3.1
SUSE:Linux Enterprise Micro 5.3kernel-defaultbefore 5.14.21-150400.24.222.15.14.21-150400.24.222.1
SUSE:Linux Enterprise Micro 5.3kernel-default-basebefore 5.14.21-150400.24.222.1.150400.24.112.15.14.21-150400.24.222.1.150400.24.112.1
SUSE:Linux Enterprise Micro 5.3kernel-rtbefore 5.14.21-150400.15.170.15.14.21-150400.15.170.1
SUSE:Linux Enterprise Micro 5.3kernel-sourcebefore 5.14.21-150400.24.222.15.14.21-150400.24.222.1
SUSE:Linux Enterprise Micro 5.3kernel-source-rtbefore 5.14.21-150400.15.170.15.14.21-150400.15.170.1
SUSE:Linux Enterprise Micro 5.5kernel-defaultbefore 5.14.21-150500.55.172.25.14.21-150500.55.172.2
SUSE:Linux Enterprise Micro 5.5kernel-default-basebefore 5.14.21-150500.55.172.2.150500.6.81.25.14.21-150500.55.172.2.150500.6.81.2

+14

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-2026-31402Apr 3, 2026 · nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
    39Monitor
  • ← EarlierCVE-2026-31403Apr 3, 2026 · NFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd
    31Monitor
  • Later →CVE-2026-31406Apr 6, 2026 · xfrm: Fix work re-schedule after cancel in xfrm_nat_keepalive_net_fini()
    31Monitor

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 Linux145e50c2c700fa52b840df7bab206043997dd18eVendor (CNA)
Linux Linux1a6da3dbb9985d00743073a1cc1f96e59f5abc30Vendor (CNA)
Linux Linux24d87712727a5017ad142d63940589a36cd25647Vendor (CNA)
Linux Linux29ef43ceb121d67b87f4cbb08439e4e9e732eff8Vendor (CNA)
Linux Linux8bde543d2a5f935ba2a6a6325a2e02f8a9256fbeVendor (CNA)
Linux Linuxb2bd2ee73b697c177157bba534e1b1064c2e66a0Vendor (CNA)
Linux Linuxe51238718217c4abdb3ccc3b0c0cde265c7ec629Vendor (CNA)
Linux Linuxf2b65dcb78c8990e4c68a906627433be1fe38a92Vendor (CNA)
debian:linux6.1.170-1 · Debian:12Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.115.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-default6.4.0-150600.23.115.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.115.1.150600.12.54.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-docs6.4.0-150600.23.115.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP4_Update_551-150400.9.3.1 · SUSE:Linux Enterprise Live Patching 15 SP4Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_271-150600.13.3.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-obs-build6.4.0-150600.23.115.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-rt5.14.21-150400.15.170.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)
suse:kernel-source6.4.0-150600.23.115.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-source-rt5.14.21-150400.15.170.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)
suse:kernel-syms6.4.0-150600.23.115.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-zfcpdump6.4.0-150600.23.115.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage 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).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

nvd-secondary

Attack context

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

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records