What is the CVSS score of EUVD-2026-45504?

EUVD-2026-45504 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.2%.

Is there a patch available for EUVD-2026-45504?

Yes, a patch is available for EUVD-2026-45504. Update the affected software to the latest version immediately.

Linux Kernel EUVD-2026-45504

| CVE-2026-53382 MEDIUM

NULL Pointer Dereference (CWE-476)

2026-07-19 Linux

GHSA-jc37-hhhx-rc2g

Denial Of Service Linux Null Pointer Dereference Canonical

5.5

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Recon

Local user access obtained
Delivery

Confirm vidtv test driver is loaded
Exploit

Induce kernel memory allocation failure
Install

vidtv_mux_pid_ctx_init silently returns success with NULL PID context
C2

Workqueue fires vidtv_mux_tick callback
Execute

vidtv_mux_push_si dereferences NULL pointer
Impact

Kernel general protection fault, system denial of service

Vulnerability Assessment

Weakness	CWE CWE-476 OWASP Top 10:2025 A10:2025 - Mishandling of Exceptional Conditions ASVS 5.0 V16 - Security Logging and Error Handling Null pointer safety, defensive checks MITRE ATT&CK 1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	The vidtv Virtual Digital TV test driver must be compiled into or loaded as a kernel module (CONFIG_DVB_VIDTV=y or =m with the module active) - this is a non-default, opt-in configuration absent from most production and distribution kernels. The attacker must have local system access with at least low-privilege credentials (PR:L per CVSS). The crash path is triggered by a memory allocation failure inside vidtv_mux_pid_ctx_init(), so some form of memory pressure or allocator exhaustion at the time of PMT PID context creation is required to reach the vulnerable state. Remote exploitation is not possible (AV:L). The vulnerability is fully inert on any system where the vidtv driver is not present or loaded.
Impact	The CVSS 5.5 Medium rating with vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H accurately reflects the narrow impact: availability-only, local scope, no privilege escalation or data exposure. EPSS at 0.19% (9th percentile) is consistent with the absence from CISA KEV and the lack of any known POC, suggesting no observed in-the-wild exploitation. Real-world risk is further attenuated by two factors not captured in raw CVSS: first, the vidtv driver is a test component that requires CONFIG_DVB_VIDTV to be explicitly enabled at compile time, meaning it is absent from the vast majority of production and distro kernels; second, triggering the crash requires inducing a memory allocation failure in the PID context init path, which adds AC:L-level environmental dependency. This is a low-priority issue for hardened production systems. Development and testing environments with the vidtv driver loaded under memory-constrained conditions carry the highest practical exposure.
Exploit ScenarioDerived	A local user on a development or test system with the vidtv kernel module loaded induces memory pressure - for example via mlock() exhaustion or repeated large allocations - such that vidtv_mux_create_pid_ctx_once() fails for a PMT PID context during initialization. On the next scheduled workqueue tick, vidtv_mux_tick() fires, calls vidtv_mux_push_si(), which blindly dereferences the NULL PID context, triggering a general protection fault and kernel panic that takes down the entire system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 29, 2026

NULL pointer dereference in the Linux kernel's vidtv virtual DVB test driver crashes the kernel when memory allocation fails silently during PID context initialization. Systems running kernel versions between the introducing commit (f90cf6079bf6) and the patched releases with CONFIG_DVB_VIDTV enabled are vulnerable to local denial of service. No public exploit is identified at time of analysis, and EPSS probability is 0.19% (9th percentile), indicating very low exploitation likelihood; the vulnerability is absent from CISA KEV.

RemediationAI

Upgrade to a patched Linux kernel stable release: 5.10.260, 5.15.211, 6.1.177, 6.6.144, 6.12.95, 6.18.37, 7.0.14, or 7.1.2 (or later). Upstream fix commits are available at https://git.kernel.org/stable/c/455bc12e7b73ab5a2dfcb47822e91e772bc6c42e and the additional branch-specific backports referenced in the CVE. For systems that cannot immediately update, the compensating control is to unload and blacklist the vidtv module: execute 'rmmod vidtv' if the module is currently loaded, and add 'blacklist vidtv' to /etc/modprobe.d/local-blacklist.conf. Because vidtv is a test-only driver with no role in production media processing, disabling it carries zero operational impact on production systems. No workaround is needed on kernels compiled without CONFIG_DVB_VIDTV.

Affected VersionsENISA

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <232e4b313ea342672edf8947e067c0de4328405b

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <353d9578951dd38bc9679308f5b618ceed1f20fa

Linux 5.10

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <455bc12e7b73ab5a2dfcb47822e91e772bc6c42e

Linux patch: 6.18.37

Linux patch: 0

Linux patch: 5.15.211

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <b28b12be6e8910489e6800ed93ea4d41dfe19683

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <cd923dadefadb9671b5ac341b672ff424d429c39

Linux patch: 6.12.95

Linux patch: 7.1.2

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <f965cf22dda7f512f4922415894c3e528269a4ae

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <7d8bf3d8f91073f4db347ed3aa6302b56107499c

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <f0f5a1d7056980a0d512456fdb370cfb72bba86a

Linux patch: 7.0.14

Linux patch: 5.10.260

Linux patch: 6.6.144

Linux f90cf6079bf67988f8b1ad1ade70fc89d0080905 <6df7e16d4f742c80add58995a6e69385b97aa9e6

Linux patch: 6.1.177

Linux patch: 7.2-rc1

Affected Packages

euvd linux no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vidtv (Virtual Digital TV) driver, located at drivers/media/test-drivers/vidtv/, is a kernel test harness that simulates DVB hardware for development purposes and is not loaded in typical production configurations. CWE-476 (NULL Pointer Dereference) describes the root cause: vidtv_mux_pid_ctx_init() calls vidtv_mux_create_pid_ctx_once() to allocate PID context structures for PMT (Program Map Table) section PIDs but never checks the return value. If the kernel allocator fails, the function silently returns success despite leaving the PID context uncreated. A periodic workqueue callback, vidtv_mux_tick(), subsequently calls vidtv_mux_push_si(), which calls vidtv_mux_get_pid_ctx() and receives NULL. It immediately dereferences that NULL pointer to read the continuity counter field, producing a general protection fault at near-NULL address 0xdffffc0000000000 as confirmed by the syzbot KASAN report included in the patch description. CPE data confirms the affected product as cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.5 MEDIUM

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

vuln.today AI 5.5 MEDIUM

Local-only test driver requiring low-privilege access; allocation failure triggers availability-only kernel crash with no confidentiality or integrity impact.

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

4.0 AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SUSE MEDIUM

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVSS changed

Jul 29, 2026 - 19:37 NVD

5.5 (MEDIUM)

Patch available

Jul 19, 2026 - 14:17 EUVD

CVE Published

Jul 19, 2026 - 11:59 cve.org

UNKNOWN (no severity yet)

CVE Published

Jul 19, 2026 - 11:59 nvd

MEDIUM 5.5

DescriptionNVD

In the Linux kernel, the following vulnerability has been resolved:

media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si

syzbot reported a general protection fault in vidtv_psi_ts_psi_write_into [1].

vidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does not check for this before dereferencing the returned pointer to access the continuity counter. This leads to a general protection fault when accessing a near-NULL address.

The root cause is that vidtv_mux_pid_ctx_init() does not check the return value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs. If the allocation fails, the PID context is never created, but init returns success. The subsequent vidtv_mux_push_si() call then gets NULL from vidtv_mux_get_pid_ctx() and crashes.

Fix both the root cause (add error check in vidtv_mux_pid_ctx_init for PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for all vidtv_mux_get_pid_ctx() calls.

[1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] Workqueue: events vidtv_mux_tick RIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197 Call Trace: <TASK> vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline] vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231 vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196 vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408

Threat Intelligence Overview

EPSS Score

0.2%

Top 91% exploitable

Prevalence

Low

test-only DVB driver, absent from most production kernels

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS MSRC Vendor

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +28

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Null Pointer Dereference MEDIUM

A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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Vendor StatusVendor

SUSE

Severity: Moderate

Product	Status
openSUSE Tumbleweed	Fixed
SUSE Linux Enterprise Desktop 15 SP7	Not-Affected
SUSE Linux Enterprise Desktop 15 SP7	Not-Affected
SUSE Linux Enterprise High Availability Extension 15 SP7	Not-Affected
SUSE Linux Enterprise High Availability Extension 15 SP7	Not-Affected

References

Advisories & patches

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