Bug 1479307 (CVE-2017-1000112)
| Summary: | CVE-2017-1000112 kernel: Exploitable memory corruption due to UFO to non-UFO path switch | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Andrej Nemec <anemec> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | aquini, bhu, blc, dhoward, fhrbata, gansalmon, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, madhu.chinakonda, matt, mchehab, mcressma, mlangsdo, mleitner, mmilgram, nmurray, pholasek, plougher, rt-maint, rvrbovsk, santony, security-response-team, slawomir, vdronov, williams, wmealing, yozone |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
An exploitable memory corruption flaw was found in the Linux kernel. The append path can be erroneously switched from UFO to non-UFO in ip_ufo_append_data() when building an UFO packet with MSG_MORE option. If unprivileged user namespaces are available, this flaw can be exploited to gain root privileges.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-06-08 03:20:10 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: | 1480465, 1481529, 1481530, 1481531, 1481532, 1481533, 1481534, 1481535, 1481536, 1481537, 1640510, 1725185 | ||
| Bug Blocks: | 1479311 | ||
|
Description
Andrej Nemec
2017-08-08 10:49:42 UTC
Acknowledgments: Name: Andrey Konovalov Public via: http://seclists.org/oss-sec/2017/q3/277 Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1480465] Statement: This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5,6, 7 and MRG-2. Future Linux kernel updates for the respective releases may address this issue. Additional information: This mainly affects systems that have UFO (UDP fragment offload) enabled. You can see if this is configured on or off with the ethool command: # ethtool -k em1 |grep "udp-fragmentation-offload:" udp-fragmentation-offload: off [fixed] If enabled, disabling the UDP fragementation offload will mitigate this flaw and is documented in this solution: https://access.redhat.com/solutions/2127401 This issue has been addressed in the following products: Red Hat Enterprise MRG 2 Via RHSA-2017:2918 https://access.redhat.com/errata/RHSA-2017:2918 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2017:2930 https://access.redhat.com/errata/RHSA-2017:2930 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2017:2931 https://access.redhat.com/errata/RHSA-2017:2931 This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Via RHSA-2017:3200 https://access.redhat.com/errata/RHSA-2017:3200 This issue has been addressed in the following products: Red Hat Enterprise Linux 5.9 Long Life Via RHSA-2019:1932 https://access.redhat.com/errata/RHSA-2019:1932 This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Extended Lifecycle Support Via RHSA-2019:1931 https://access.redhat.com/errata/RHSA-2019:1931 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.3 Telco Extended Update Support Red Hat Enterprise Linux 7.3 Advanced Update Support Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions Via RHSA-2019:4159 https://access.redhat.com/errata/RHSA-2019:4159 |