Bug 1520893 (CVE-2017-15121)
| Summary: | CVE-2017-15121 kernel: vfs: BUG in truncate_inode_pages_range() and fuse client | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Vladis Dronov <vdronov> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | airlied, ajax, aquini, bhu, blc, bskeggs, carnil, dhoward, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jkacur, john.j5live, jonathan, josef, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, matt, mchehab, mcressma, mjg59, mlangsdo, mmilgram, nmurray, plougher, rt-maint, rvrbovsk, skozina, slawomir, steved, vdronov, williams |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
A non-privileged user is able to mount a fuse filesystem on RHEL 6 or 7 and crash a system if an application punches a hole in a file that does not end aligned to a page boundary.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-06-08 03:32:43 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: | 1387473, 1520993, 1522823, 1522827, 1546079, 1695793, 1695794 | ||
| Bug Blocks: | 1515425 | ||
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Description
Vladis Dronov
2017-12-05 12:15:23 UTC
Acknowledgments: Name: Miklos Szeredi (Red Hat) Vladis, is this a Red Hat Kernel specific issue? hei hai, Salvatore, yes, mostly. it appeared that rhel-6 and -7 are vulnerable, but rhel-alt is not. this means the flaw is reproduced with kernels from, at leat, 2.6.32 to 3.10, but not with 4.11. the upstream fix for this is commit 5a7203947a1d ("mm: teach truncate_inode_pages_range() to handle non page aligned ranges") which is in the upstream since v3.11-rc1.
Statement: This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 7 for ARM and Red Hat Enterprise Linux 7 for Power LE. This issue affects the versions of the Linux kernel as shipped with 6, 7 and Red Hat Enterprise MRG 2. Future updates for the respective releases may address this issue. What is Red Hat Enterprise Linux 7 for ARM,
Red Hat Enterprise Linux 7 for Power LE,
and the "kernel-alt" package:
The "kernel-alt" package as shipped with Red Hat Enterprise Linux 7 for ARM and Red Hat Enterprise Linux 7 for Power LE is an updated kernel intended to support new architectures not available at the time of Red Hat Enterprise Linux 7 original shipping. The new kernel version provided by the "kernel-alt" packages is based on upstream Linux kernel version 4.11. The offering is distributed with other updated packages, but most of the userspace is the standard Red Hat Enterprise Linux 7 Server RPM files.
For more information please refer to:
https://access.redhat.com/articles/3158541
https://access.redhat.com/articles/3158511
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2018:0676 https://access.redhat.com/errata/RHSA-2018:0676 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2018:1062 https://access.redhat.com/errata/RHSA-2018:1062 This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Via RHSA-2018:1854 https://access.redhat.com/errata/RHSA-2018:1854 |