Bug 1619846 (CVE-2018-14625)

Summary: CVE-2018-14625 kernel: use-after-free Read in vhost_transport_send_pkt
Product: [Other] Security Response Reporter: Laura Pardo <lpardo>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: abhgupta, airlied, aquini, bhu, blc, bskeggs, dbaker, dhoward, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, john.j5live, jokerman, jonathan, josef, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, lwang, mchehab, mjg59, mlangsdo, mvanderw, nmurray, plougher, rvrbovsk, skozina, slawomir, steved, sthangav, trankin, williams, wmealing, yozone
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 flaw was found where an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest. A race condition between connect() and close() function may allow an attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly impersonate AF_VSOCK messages destined to other clients or leak kernel memory.
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-08-06 13:19:04 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 1642210, 1619847, 1619848, 1619849, 1623776, 1642211    
Bug Blocks: 1619850    

Description Laura Pardo 2018-08-21 21:53:33 UTC
A flaw was found in Linux Kernel in which an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest.  A race condition between connect() and close() function may allow an attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly intercept or corrupt AF_VSOCK messages destined to other clients.


Introduced by:
https://github.com/torvalds/linux/commit/433fc58e6bf2c8bd97e57153ed28e64fd78207b8

References:
https://syzkaller.appspot.com/bug?extid=bd391451452fb0b93039

Comment 1 Laura Pardo 2018-08-21 21:54:34 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1619847]

Comment 7 errata-xmlrpc 2019-08-06 12:04:16 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2029

Comment 8 errata-xmlrpc 2019-08-06 12:06:38 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2043 https://access.redhat.com/errata/RHSA-2019:2043

Comment 9 Product Security DevOps Team 2019-08-06 13:19:04 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-2018-14625