Bug 1454757 (CVE-2017-9211) - CVE-2017-9211 kernel: Null pointer dereference due to missing key-size check in setkey function
Summary: CVE-2017-9211 kernel: Null pointer dereference due to missing key-size check ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-9211
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: 1454759 1458154 1458155 1458156
Blocks: 1454767
TreeView+ depends on / blocked
 
Reported: 2017-05-23 12:37 UTC by Adam Mariš
Modified: 2021-10-27 10:52 UTC (History)
27 users (show)

Fixed In Version:
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Doc Text:
The crypto_skcipher_init_tfm function in crypto/skcipher.c in the Linux kernel through 4.11.2 relies on a setkey function that lacks a key-size check, which allows local users to cause a denial of service (NULL pointer dereference) via a crafted application.
Clone Of:
Environment:
Last Closed: 2021-10-27 10:52:39 UTC

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Description Adam Mariš 2017-05-23 12:37:51 UTC 
The crypto_skcipher_init_tfm function in crypto/skcipher.c in the Linux kernel through 4.11.2 relies on a setkey function that lacks a key-size check, which allows local users to cause a denial of service (NULL pointer dereference) via a crafted application.

Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/crypto?id=9933e113c2e87a9f46a40fde8dafbf801dca1ab9
Comment 1 Adam Mariš 2017-05-23 12:38:54 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1454759]
Comment 5 Justin M. Forbes 2018-01-29 17:29:19 UTC 
This was fixed for fedora with the 4.11.4 stable updates.
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