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Debian: CVE-2015-7550: linux -- security update

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Debian: CVE-2015-7550: linux -- security update

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
01/05/2016
Created
07/25/2018
Added
02/07/2016
Modified
03/23/2020

Description

The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.

Solution(s)

  • debian-upgrade-linux

References

  • 79903
  • DLA-378-1
  • DSA-3434
  • CVE-2015-7550

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