Bug 1903678 (CVE-2020-11935) - CVE-2020-11935 kernel: panic hit by kube-proxy iptables-save/restore
Summary: CVE-2020-11935 kernel: panic hit by kube-proxy iptables-save/restore
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-11935
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1903680
Blocks: 1903681
TreeView+ depends on / blocked
 
Reported: 2020-12-02 16:00 UTC by Dhananjay Arunesh
Modified: 2021-05-27 17:39 UTC (History)
45 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw improperly managed inode reference counts in the vfsub_dentry_open() in the Linux kernel aufs subsystem was found in the way local user calls vfsub_dentry_open() method. A local user could use this flaw to crash the system.
Clone Of:
Environment:
Last Closed: 2020-12-11 12:47:05 UTC
Embargoed:

Attachments (Terms of Use)

Description Dhananjay Arunesh 2020-12-02 16:00:37 UTC 
Systems with aufs mounts are vulnerable to a kernel BUG(), which can turn into a panic/crash if panic_on_oops is set.
Comment 1 Dhananjay Arunesh 2020-12-02 16:02:45 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1903680]
Comment 2 Justin M. Forbes 2020-12-03 13:36:14 UTC 
The aufs bits are not upstream, and have never been included in a Fedora build.
Comment 3 Product Security DevOps Team 2020-12-11 12:47:05 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-11935
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