5.6

CVE-2026-88265

Crun: crun: /dev/null symlink follow during stdio reopen allows host bind-mount write and chown

A flaw was found in crun. After pivot_root, reopening /dev/null for stdio can follow a symlink and attach a host file to container stdio, then change that file's ownership. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerRed Hat
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Produkt Red Hat Hardened Images
Default Statusaffected
Version 1.30-1.hum1
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 10
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 8
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 9
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4
Default Statusaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.02
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 5.6 1.1 4
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N
CWE-59 Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

https://github.com/containers/crun/
https://access.redhat.com/security/cve/CVE-2026-88265
https://bugzilla.redhat.com/show_bug.cgi?id=2531224
https://access.redhat.com/errata/RHSA-2026:71668