Bug 1317383 (CVE-2016-3134)
| Summary: | CVE-2016-3134 kernel: netfilter: missing bounds check in ipt_entry structure | ||
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| 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, arm-mgr, bhu, carnil, dhoward, fhrbata, fwestpha, gansalmon, iboverma, itamar, jforbes, jkacur, joelsmith, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, kstutsma, lgoncalv, madhu.chinakonda, matt, mchehab, mcressma, nmurray, plougher, pmatouse, ppandit, rt-maint, rvrbovsk, slawomir, vdronov, williams |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
A security flaw was found in the Linux kernel in the mark_source_chains() function in "net/ipv4/netfilter/ip_tables.c". It is possible for a user-supplied "ipt_entry" structure to have a large "next_offset" field. This field is not bounds checked prior to writing to a counter value at the supplied offset.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-06-08 02:49:39 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: | 1317384, 1318693, 1318694, 1318695, 1318696, 1364809, 1364810 | ||
| Bug Blocks: | 1317388, 1320141 | ||
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Description
Andrej Nemec
2016-03-14 07:43:31 UTC
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1317384] Statement: This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6. This issue is not currently planned to be addressed in future updates, as user namespaces which the flaw affects are not supported in these products. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future Linux kernel updates for the respective releases might address this issue. *** Bug 1320138 has been marked as a duplicate of this bug. *** kernel-4.4.6-300.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. kernel-4.4.6-200.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report. kernel-4.5.0-302.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report. kernel-4.5.0-302.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report. I'd prefer if the maintainers of those trees can take care of picking these patches up since I don't know how to do this. All changes are now in rhel7.git . I only see a problem with older rhel7 kernels (where netfilter rule blob is percpu), if 7.1 and 7.2 releases need a zstream please let me know. If there are any other questions feel free to ping me. This issue has been addressed in the following products: MRG for RHEL-6 v.2 Via RHSA-2016:1883 https://rhn.redhat.com/errata/RHSA-2016-1883.html This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2016:1847 https://rhn.redhat.com/errata/RHSA-2016-1847.html This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2016:1875 https://rhn.redhat.com/errata/RHSA-2016-1875.html |