CVE-2026-23060VulnerabilityPublished 19 May 2026Updated 9 Oct 2026

Red Hat Security Advisory: kernel security update

Affects Linux kernelSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-23060· High

Not known to be exploited · fixed in Red Hat package updates : patch Linux kernel soon.

Data as of 29 Oct 2026, 19:04 UTC

Severity

High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in fee86edf5803f1d1f19e3b4f2dacac241bddfa48, df22c9a65e9a9daa368a72fed596af9d7d5876bb, b0a9609283a5c852addb513dafa655c61eebc1ef +4

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 104880a6b470958ddc30e139c41aa4f6ed3a5234, < fee86edf5803f1d1f19e3b4f2dacac241bddfa48	Fixed in fee86edf5803f1d1f19e3b4f2dacac241bddfa48
LinuxLinux	Affected ≥ 104880a6b470958ddc30e139c41aa4f6ed3a5234, < df22c9a65e9a9daa368a72fed596af9d7d5876bb	Fixed in df22c9a65e9a9daa368a72fed596af9d7d5876bb
LinuxLinux	Affected ≥ 104880a6b470958ddc30e139c41aa4f6ed3a5234, < b0a9609283a5c852addb513dafa655c61eebc1ef	Fixed in b0a9609283a5c852addb513dafa655c61eebc1ef
LinuxLinux	Affected ≥ 104880a6b470958ddc30e139c41aa4f6ed3a5234, < 9532ff0d0e90ff78a214299f594ab9bac81defe4	Fixed in 9532ff0d0e90ff78a214299f594ab9bac81defe4
LinuxLinux	Affected ≥ 104880a6b470958ddc30e139c41aa4f6ed3a5234, < 2397e9264676be7794f8f7f1e9763d90bd3c7335	Fixed in 2397e9264676be7794f8f7f1e9763d90bd3c7335
LinuxLinux	Affected ≥ 104880a6b470958ddc30e139c41aa4f6ed3a5234, < 767e8349f7e929b7dd95c08f0b4cb353459b365e	Fixed in 767e8349f7e929b7dd95c08f0b4cb353459b365e

AI-suggested

Red Hat has released updated kernel packages for Red Hat Enterprise Linux 10 and related products that address these vulnerabilities. Users should apply the kernel update as described in Red Hat advisory RHSA-2026:19074 and reboot affected systems to ensure the fixes take effect. The advisory provides detailed instructions and package links. There are no indications that these issues are mitigated by default or require additional workarounds beyond applying the official update and rebooting.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Linux kernel: Denial of Service in authencesn due to too-short AAD (CVE-2026-23060) * kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) * kernel: crypto: af_alg - limit RX SG extraction by receive buffer budget (CVE-2026-31677) * kernel: "Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Impact

The vulnerabilities impact the Linux kernel, the core of the operating system, potentially allowing denial of service conditions and local privilege escalation. Specifically, CVE-2026-23060 can cause denial of service due to improper handling of too-short AAD in authencesn. CVE-2026-31431 and CVE-2026-31677 address cryptographic subsystem issues that could affect kernel cryptographic operations. CVE-2026-43284 is a local privilege escalation vulnerability that could allow an attacker with local access to gain elevated privileges. These issues affect system stability and security, making patching critical to maintain system integrity.

Summary

This Red Hat security advisory (RHSA-2026:19074) addresses four Linux kernel vulnerabilities affecting Red Hat Enterprise Linux 10 and associated CodeReady Linux Builder and AppStream/BaseOS components. The vulnerabilities include a denial of service in the authencesn module caused by too-short Additional Authenticated Data (AAD) (CVE-2026-23060), cryptographic fixes involving the algif_aead and af_alg components (CVE-2026-31431 and CVE-2026-31677), and a new universal local privilege escalation vulnerability in the kernel's ESP XFRM implementation known as the "Dirty Frag" variant (CVE-2026-43284). Red Hat has released updated kernel packages that fix these issues and requires a system reboot to apply the updates. The advisory rates the security impact as important (high severity). No CVSS scores are provided in the advisory, but the vulnerabilities affect critical kernel components.

CWE-1284Improper Validation of Specified Quantity in Input (opens in a new tab)
Base weakness
The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-1288Improper Validation of Consistency within Input (opens in a new tab)
Base weakness
The product receives a complex input with multiple elements or fields that must be consistent with each other, but it does not validate or incorrectly validates that the input is actually consistent.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-770Allocation of Resources Without Limits or Throttling (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #25
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
Requirements
Clearly specify the minimum and maximum expectations for capabilities, and dictate which behaviors are acceptable when resource allocation reaches limits.
Architecture and Design
Limit the amount of resources that are accessible to unprivileged users. Set per-user limits for resources. Allow the system administrator to define these limits. Be careful to avoid CWE-410.
Architecture and Design
Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended.
OWASP Cheat Sheets
Abuse Case (opens in a new tab)
OWASP ASVS 4.0.3
V8.1.4 (opens in a new tab)
V13.4.1 (opens in a new tab)
V11.1.4 (opens in a new tab)
Attack patterns
XML Ping of the Death (opens in a new tab)
Exponential Data Expansion (opens in a new tab)
Serialized Data Parameter Blowup (opens in a new tab)
Serialized Data with Nested Payloads (opens in a new tab)
Oversized Serialized Data Payloads (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-123Write-what-where Condition (opens in a new tab)
Base weaknessLikelihood of exploit: High
Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.
Architecture and Design · Language Selection
Use a language that provides appropriate memory abstractions.
Operation
Use OS-level preventative functionality integrated after the fact. Not a complete solution.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Jul 2026, 12:59 UTC

WeaknessesCWE-1284, CWE-1288, CWE-770 +1

Technical details

References

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