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Bug 1624507 - (CVE-2018-16276) CVE-2018-16276 kernel: incorrect bounds checking in yurex_read in drivers/usb/misc/yurex.c
CVE-2018-16276 kernel: incorrect bounds checking in yurex_read in drivers/usb...
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=20180706,repor...
: Security
Depends On: 1624508
Blocks: 1624509
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Reported: 2018-08-31 16:58 EDT by Laura Pardo
Modified: 2018-09-10 04:34 EDT (History)
50 users (show)

See Also:
Fixed In Version: kernel 4.17.7
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds access issue was discovered in yurex_read() in drivers/usb/misc/yurex.c in the Linux kernel. A local attacker could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges.
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Clone Of:
Environment:
Last Closed: 2018-09-03 11:05:58 EDT
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Laura Pardo 2018-08-31 16:58:15 EDT 
An out-of-bound access issue was discovered in yurex_read() in drivers/usb/misc/yurex.c in the Linux kernel. A local attacker could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges.

References:

https://marc.info/?t=153089016500001&r=1&w=2

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.7

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f1e255d60ae66a9f672ff9a207ee6cd8e33d2679
Comment 1 Laura Pardo 2018-08-31 16:58:43 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1624508]
Comment 2 Justin M. Forbes 2018-08-31 17:26:35 EDT 
This was fixed for Fedora with the 4.17.7 stable updates.
Comment 5 Vladis Dronov 2018-09-03 11:05:58 EDT 
Note:

No Red Hat products are vulnerable to this flaw, as the yurex driver is not shipped.
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