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Bug 1544482 - (CVE-2017-18174) CVE-2017-18174 kernel: Double free vulnerability in drivers/pinctrl/pinctrl-amd.c:amd_gpio_remove() function can lead to kernel panic
CVE-2017-18174 kernel: Double free vulnerability in drivers/pinctrl/pinctrl-a...
Status: CLOSED NOTABUG
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=20180117,repor...
: Security
Depends On:
Blocks:
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Reported: 2018-02-12 10:58 EST by Adam Mariš
Modified: 2018-05-14 09:57 EDT (History)
45 users (show)

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Fixed In Version: kernel 4.7
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Last Closed: 2018-02-12 11:01:28 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2018-02-12 10:58:04 EST 
In the Linux kernel before 4.7, the amd_gpio_remove function in drivers/pinctrl/pinctrl-amd.c calls the pinctrl_unregister function, leading to a double free.

Introduced by:

https://github.com/torvalds/linux/commit/dbad75dd1f25e0107c643d42774a7f9a8ba85e9b

Fixed by:

https://github.com/torvalds/linux/commit/251e22abde21833b3d29577e4d8c7aaccd650eee

Re-introduced by (only in rc release):

https://github.com/torvalds/linux/commit/3bfd44306c65d073008b9ca8f062249f35576b61

Fixed again by:

https://github.com/torvalds/linux/commit/8dca4a41f1ad65043a78c2338d9725f859c8d2c3
Comment 1 Adam Mariš 2018-02-12 11:01:49 EST 
Statement:

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6 and 7, and Red Hat Enterprise MRG as they did not include the vulnerable code.
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