Bundesamt für Sicherheit in der Informationstechnik Amazon · Linux Kernel (Fragnesia): Schwachstelle ermöglicht Erlangen von Administratorrechten
Affects Bundesamt für Sicherheit in der Informationstechnik AmazonSource GCVE Database
Exploited in the wild · KEV due 31 Oct 2026 · public exploit available (Metasploit, Exploit-DB) · 10% EPSS · fixed in f84eca5817390257cef78013d0112481c503b4a3 : patch Bundesamt für Sicherheit in der Informationstechnik Amazon now.
Data as of 29 Oct 2026, 12:07 UTC
Sources agree
| CNA (Linux) | CVSS 3.1 | 7.8 |
|---|---|---|
| ADP (redhat-SADP) | CVSS 3.1 | 7.8 |
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
- EPSS
- 10.1% chance of exploitation in 30 days – higher than 95% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in f84eca5817390257cef78013d0112481c503b4a3, 3884358a9286b17f389a72b1426fc4547c23c111, 3599e6b3cc1ada96883d496a50a210d3afbb6987 +5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 23 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
1 Metasploit module · 1 Exploit-DB entry, 6 days after disclosure
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 158 days after disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by kernel.org
, 10 days before disclosure
CVE published
on cve.org
, t = 0
First Exploit-DB entry (opens in a new tab)
Linux Kernel - Local Privilege Escalation
, 6 days after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, 158 days after disclosure
KEV remediation due
US federal deadline
, 161 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
Multiple security vulnerabilities have been identified in the Linux kernel, including a logic flaw in the XFRM ESP-in-TCP subsystem known as Fragnesia (CVE-2026-46300). These flaws could allow a local attacker to escalate privileges or escape container environments. The vulnerabilities affect various kernel subsystems and architectures. Public exploit code is available, and exploitation in the wild is confirmed. Ubuntu has released security updates addressing these issues.
References
- wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1530.json (opens in a new tab)
- wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1530 (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-50353.html (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-19568.html (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-18587.html (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-21556.html (opens in a new tab)
- lists.suse.com/pipermail/sle-security-updates/2026-July/027180.html (opens in a new tab)
- ubuntu.com/security/notices/USN-8497-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8499-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8501-1 (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-24381.html (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-25217.html (opens in a new tab)
- ubuntu.com/security/notices/USN-8489-1 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:28887 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2477015 (opens in a new tab)
- github.com/v12-security/pocs/blob/main/fragnesia%2FREADME.md (opens in a new tab)
- access.redhat.com/security/cve/cve-2026-46300 (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-cccb681166 (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-ec1c523fdb (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-4462efc052 (opens in a new tab)