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VulnerabilityPublished

CVE-2026-103963: Red Hat Enterprise Linux 10 · Uncontrolled Resource Consumption

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 30 Oct 2026, 04:44 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.17.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10glib-networkingAffected–Fixed in–
Red Hat Enterprise Linux 6glib-networkingAffected–Fixed in–
Red Hat Enterprise Linux 7glib-networkingAffected–Fixed in–
Red Hat Enterprise Linux 8glib-networkingAffected–Fixed in–
Red Hat Enterprise Linux 9glib-networkingAffected–Fixed in–

AI-suggested

Red Hat currently states that no mitigation is available or that existing options do not meet their criteria for ease of use, deployment, applicability, or stability. Users should monitor Red Hat's advisory for updates.

Description

A vulnerability in glib-networking used by Red Hat Enterprise Linux 10 causes uncontrolled memory consumption when establishing TLS 1.3 connections. The client-side session cache does not limit the number of session tickets retained per host, allowing a malicious server to send excessive session tickets. This leads to unbounded memory growth and can exhaust system memory, resulting in a denial of service (DoS). No mitigation or patch is currently available that meets Red Hat's criteria for deployment and stability.

References

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