Bug 1590205 (CVE-2018-12233)

Summary: CVE-2018-12233 kernel: Memory corruption in JFS setattr
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: airlied, aquini, bhu, blc, bskeggs, dhoward, esammons, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, john.j5live, jonathan, josef, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, lwang, matt, mchehab, mcressma, mguzik, mjg59, mlangsdo, nmurray, plougher, rt-maint, rvrbovsk, skozina, steved, vdronov, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
A memory corruption issue was found in the Linux kernel with a JFS file system. Two setxattr calls to the same file with different extended attribute names would trigger an overflow and a memory corruption.
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-06-12 14:48:43 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1590206, 1590207    
Bug Blocks: 1590208    

Description Andrej Nemec 2018-06-12 08:30:00 UTC
A memory corruption issue was found in the Linux kernel with a JFS file system. Two setxattr calls to the same file with different extended attribute names would trigger an overflow and a memory corruption.

References:

https://lkml.org/lkml/2018/6/1/829

https://marc.info/?t=152788652700001&r=1&w=2

A proposed patch:

https://marc.info/?l=linux-kernel&m=152814391530549&w=2

Comment 1 Andrej Nemec 2018-06-12 08:31:05 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1590207]

Comment 5 Vladis Dronov 2018-06-12 14:48:43 UTC
Note:

Red Hat does not ship the JFS filesystem in any product, so no Red Hat products are vulnerable to this flaw.