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Bug 1454757 - (CVE-2017-9211) CVE-2017-9211 kernel: Null pointer dereference due to missing key-size check in setkey function
CVE-2017-9211 kernel: Null pointer dereference due to missing key-size check ...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170509,repor...
: Security
Depends On: 1458154 1458156 1454759 1458155
Blocks: 1454767
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Reported: 2017-05-23 08:37 EDT by Adam Mariš
Modified: 2018-08-28 18:17 EDT (History)
30 users (show)

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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.
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Description Adam Mariš 2017-05-23 08:37:51 EDT 
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 08:38:54 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1454759]
Comment 5 Justin M. Forbes 2018-01-29 12:29:19 EST 
This was fixed for fedora with the 4.11.4 stable updates.
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