Bug 647416 (CVE-2010-3865)
Summary: | CVE-2010-3865 kernel: iovec integer overflow in net/rds/rdma.c | ||
---|---|---|---|
Product: | [Other] Security Response | Reporter: | Eugene Teo (Security Response) <eteo> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED ERRATA | QA Contact: | |
Severity: | high | Docs Contact: | |
Priority: | high | ||
Version: | unspecified | CC: | arozansk, davej, dhoward, fhrbata, jpirko, kmcmartin, lwang, nixon, plyons, pmatouse, rcvalle, security-response-team, tcallawa, vdanen |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2012-03-28 08:44:42 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | 647421, 647422, 647423, 647424 | ||
Bug Blocks: |
Comment 1
Eugene Teo (Security Response)
2010-10-28 09:53:50 UTC
Statement: The Linux kernel as shipped with Red Hat Enterprise Linux 3, 4 and Red Hat Enterprise MRG did not include support for the RDS Protocol, and therefore are not affected by this issue. Future kernel updates in Red Hat Enterprise Linux 5 may address this flaw. Mitigation: For users that do not run applications that use RDS, you can prevent the rds module from being loaded by adding the following entry to the end of the /etc/modprobe.d/blacklist file: blacklist rds This way, the rds module cannot be loaded accidentally, which may occur if an application that requires RDS is started. A reboot is not necessary for this change to take effect but do make sure the module is not loaded in the first place. You can verify that by running: lsmod | grep rds You may also consider removing the CAP_SYS_MODULE capability from the current global capability set to prevent kernel modules from being loaded or unloaded. The CAP_SYS_MODULE has a capability number of 16 (see linux/capability.h). The default value has all the bits set. To remove this capability, you have to clear the 16th bit of the default 32-bit value, e.g. 0xffffff ^ (1 << 16): echo 0xFFFEFFFF > /proc/sys/kernel/cap-bound Upstream commit: http://git.kernel.org/linus/1b1f693d7ad6d193862dcb1118540a030c5e761f This issue has been addressed in following products: Red Hat Enterprise Linux 5 Via RHSA-2011:0004 https://rhn.redhat.com/errata/RHSA-2011-0004.html This issue has been addressed in following products: Red Hat Enterprise Linux 6 Via RHSA-2011:0007 https://rhn.redhat.com/errata/RHSA-2011-0007.html |