CVE-2010-4247
Description
The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Linux kernel Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 2.6.18 | Not affected | — |
References
- http://secunia.com/advisories/35093
- http://secunia.com/advisories/42789
- http://secunia.com/advisories/46397
- http://www.openwall.com/lists/oss-security/2010/11/23/1
- http://www.openwall.com/lists/oss-security/2010/11/24/8
- http://www.redhat.com/support/errata/RHSA-2011-0004.html
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://www.securityfocus.com/bid/45029
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://www.vupen.com/english/advisories/2011/0024
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d
- https://bugzilla.redhat.com/show_bug.cgi?id=656206
- http://secunia.com/advisories/35093
- http://secunia.com/advisories/42789
- http://secunia.com/advisories/46397
- http://www.openwall.com/lists/oss-security/2010/11/23/1
- http://www.openwall.com/lists/oss-security/2010/11/24/8
- http://www.redhat.com/support/errata/RHSA-2011-0004.html
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://www.securityfocus.com/bid/45029
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://www.vupen.com/english/advisories/2011/0024
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.