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Linux EUVDEUVD-2026-38958

| CVE-2026-53090 HIGH
Incorrect Check of Function Return Value (CWE-253)
2026-06-24 Linux GHSA-h443-hx93-m7qc
Information Disclosure Linux
7.8
CVSS 3.1 · Vendor: Linux
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Vulnerability Assessment

Weakness
CWE
CWE-253
ASVS 5.0
V16 - Security Logging and Error Handling Incorrect check of return value
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 27, 2026

Improper simulation of BPF ld_{abs,ind} failure paths in the Linux kernel verifier allows a local attacker with BPF loading capability to bypass security checks and achieve full system compromise (C:H/I:H/A:H).

Affected VersionsENISA

Linux 09b28d76eac48e922dc293da1aa2b2b85c32aeee <d846d83bdacbd8f14fc45c63b8c1d22608452e1c
Linux patch: 7.0.10
Linux patch: 7.1
Linux patch: 0
Linux 09b28d76eac48e922dc293da1aa2b2b85c32aeee <ee861486e377edc55361c08dcbceab3f6b6577bd
Linux 5.10

Affected Packages

euvd linux no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

Vendor (Linux) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.8 HIGH

Local actor able to load eBPF (PR:L, AV:L); verifier bypass enabling unsafe kernel memory access yields high C/I/A with no user interaction and low complexity.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE 6.7 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Red Hat 6.4 MEDIUM

Primary rating from Vendor (Linux).

CVSS VectorVendor: Linux

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
CVSS changed
Jun 28, 2026 - 08:22 NVD
7.8 (HIGH)
CVE Published
Jun 24, 2026 - 16:30 cve.org
UNKNOWN (no severity yet)
CVE Published
Jun 24, 2026 - 16:30 cve.org
HIGH 7.8

DescriptionCVE.org

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

bpf: Fix ld_{abs,ind} failure path analysis in subprogs

Usage of ld_{abs,ind} instructions got extended into subprogs some time ago via commit 09b28d76eac4 ("bpf: Add abnormal return checks."). These are only allowed in subprograms when the latter are BTF annotated and have scalar return types.

The code generator in bpf_gen_ld_abs() has an abnormal exit path (r0=0 + exit) from legacy cBPF times. While the enforcement is on scalar return types, the verifier must also simulate the path of abnormal exit if the packet data load via ld_{abs,ind} failed.

This is currently not the case. Fix it by having the verifier simulate both success and failure paths, and extend it in similar ways as we do for tail calls. The success path (r0=unknown, continue to next insn) is pushed onto stack for later validation and the r0=0 and return to the caller is done on the fall-through side.

Threat Intelligence Overview

EPSS Score
0.2%
Top 95% exploitable
Vendor Action
See Below
Not affected (vendor confirmed)
Data Quality
6 sources
Confidence: High
EUVD NVD CVE.org EPSS 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 HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
No
Human Impact· derived
Medium

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Same weakness CWE-253 – Incorrect Check of Function Return Value

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CVE-2023-34449 MEDIUM POC
5.3
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Same technique Information Disclosure

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CVE-2019-2725 CRITICAL POC
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CVE-2021-34523 CRITICAL POC
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CVE-2013-2251 CRITICAL POC
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CVE-2017-5638 CRITICAL POC
9.8
CVE-2025-24813 CRITICAL POC
9.8
CVE-2025-68613 HIGH POC
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CVE-2015-1701 HIGH POC
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CVE-2017-0147 HIGH POC
7.5

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
Container suse/sl-micro/6.0/base-os-container:2.1.3-7.177 Container suse/sl-micro/6.1/base-os-container:2.2.1-5.155 Affected
Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.206 Container suse/sl-micro/6.1/rt-os-container:2.2.1-5.152 Affected
Image SLES15-SP7-Azure-3P Image SLES15-SP7-Azure-Basic Image SLES15-SP7-Azure-Standard Image SLES15-SP7-HPC-Azure Affected
Image SLES15-SP7-BYOS-Azure Image SLES15-SP7-BYOS-GCE Image SLES15-SP7-CHOST-BYOS-Aliyun Image SLES15-SP7-CHOST-BYOS-Azure Image SLES15-SP7-CHOST-BYOS-EC2 Image SLES15-SP7-CHOST-BYOS-GCE Image SLES15-SP7-CHOST-BYOS-GDC Image SLES15-SP7-CHOST-BYOS-SAP-CCloud Image SLES15-SP7-EC2 Image SLES15-SP7-EC2-ECS-HVM Image SLES15-SP7-GCE Image SLES15-SP7-HPC-BYOS-Azure Image SLES15-SP7-HPC-BYOS-EC2 Image SLES15-SP7-HPC-BYOS-GCE Image SLES15-SP7-Hardened-BYOS-Azure Image SLES15-SP7-Hardened-BYOS-EC2 Image SLES15-SP7-Hardened-BYOS-GCE Image SLES15-SP7-SAPCAL-Azure Image SLES15-SP7-SAPCAL-EC2 Image SLES15-SP7-SAPCAL-GCE Affected
Image SLES15-SP7-SAP-Azure Image SLES15-SP7-SAP-Azure-3P Image SLES15-SP7-SAP-BYOS-Azure Image SLES15-SP7-SAP-BYOS-EC2 Image SLES15-SP7-SAP-BYOS-GCE Image SLES15-SP7-SAP-EC2 Image SLES15-SP7-SAP-GCE Image SLES15-SP7-SAP-Hardened-Azure Image SLES15-SP7-SAP-Hardened-BYOS-Azure Image SLES15-SP7-SAP-Hardened-BYOS-EC2 Image SLES15-SP7-SAP-Hardened-BYOS-GCE Image SLES15-SP7-SAP-Hardened-GCE Affected

References

Advisories & patches
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-53090 ADVISORY https://ubuntu.com/security/notices/USN-8566-1 ADVISORY https://ubuntu.com/security/notices/USN-8568-1 ADVISORY https://vuldb.com/vuln/373366 ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:22742/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:22769/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:3130/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:3166/ REF https://access.redhat.com/security/cve/CVE-2026-53090 REF https://bugzilla.redhat.com/show_bug.cgi?id=2492305 REF https://git.kernel.org/stable/c/37ad2bb11e9de92cb7b94548705eeedd87f7d392 REF https://git.kernel.org/stable/c/8674e2db06cff6b50f2216eed9a761d15425bb34 REF https://git.kernel.org/stable/c/8a800497d9f6c2ec9c2c1ba7b71d0ac2ea7f7bbe REF https://git.kernel.org/stable/c/928d354ae3557e8f755a227e67be88034eb3cd7f REF https://git.kernel.org/stable/c/ce01a4e5cfac7adbe0be565f90cd32ecbb2f8337 REF https://git.kernel.org/stable/c/d846d83bdacbd8f14fc45c63b8c1d22608452e1c REF https://git.kernel.org/stable/c/de1055e7f9e67af32b1f3376066272b04e5223c0 REF https://git.kernel.org/stable/c/ee861486e377edc55361c08dcbceab3f6b6577bd REF https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53090.json

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