Bug 1445338 (CVE-2017-8065) - CVE-2017-8065 kernel: crypto/ccm.c interacts incorrectly with the CONFIG_VMAP_STACK option
Summary: CVE-2017-8065 kernel: crypto/ccm.c interacts incorrectly with the CONFIG_VMAP...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-8065
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1445344
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-04-25 13:47 UTC by Adam Mariš
Modified: 2019-09-29 14:11 UTC (History)
28 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2019-06-08 03:11:22 UTC
Embargoed:

Attachments (Terms of Use)

Description Adam Mariš 2017-04-25 13:47:38 UTC 
crypto/ccm.c in the Linux kernel 4.9.x and 4.10.x through 4.10.12
interacts incorrectly with the CONFIG_VMAP_STACK option, which allows
local users to cause a denial of service (system crash or memory
corruption) or possibly have unspecified other impact by leveraging
use of more than one virtual page for a DMA scatterlist.

Upstream patch:

https://github.com/torvalds/linux/commit/3b30460c5b0ed762be75a004e924ec3f8711e032
Comment 1 Adam Mariš 2017-04-25 13:54:39 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1445344]
Comment 2 Justin M. Forbes 2017-04-27 14:06:24 UTC 
The commit that this patch fixes was not until 4.11-rc1, 4.9 and 4.10 both have idata/odata as part of pctx.  This bug never shipped in a released kernel, it was introduced in the 4.11 merge window and resolved in the merge window.
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