Bug 1549427 (CVE-2018-7480) - CVE-2018-7480 kernel: Double free in block/blk-cgroup.c:blkcg_init_queue() can allow a local user to cause a denial of service
Summary: CVE-2018-7480 kernel: Double free in block/blk-cgroup.c:blkcg_init_queue() ca...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-7480
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:
Blocks: Embargoed1549429
TreeView+ depends on / blocked
 
Reported: 2018-02-27 04:34 UTC by Sam Fowler
Modified: 2021-06-10 14:53 UTC (History)
26 users (show)

Fixed In Version: kernel 4.11
Doc Type: If docs needed, set a value
Doc Text:
The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel, before 4.11, allows local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure.
Clone Of:
Environment:
Last Closed: 2018-03-01 09:21:50 UTC

Attachments (Terms of Use)

Description Sam Fowler 2018-02-27 04:34:34 UTC 
The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel before 4.11 allows local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure.

References:

https://marc.info/?t=148611364100003&r=1&w=2

An upstream commit:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9b54d816e00425c3a517514e0d677bb3cec49258
Comment 3 Vladis Dronov 2018-03-01 09:21:50 UTC 
Statement:

This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE, as the code with the flaw is not present in the products listed.
Note You need to log in before you can comment on or make changes to this bug.