kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
Published Oct 3, 2018
5.5
MEDIUMCVSS 3.0
EPSS 0.36%
Description
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.
Affected products
No data.
Configuration 1
- ≤ 4.18.11
Configuration 2
- 12.04
- 14.04
- 16.04
- 18.04
- 18.10
Configuration 3
- 7.0
- 7.0
- 7.6
- 7.6
- 7.6
- 7.6
- 7.0
Configuration 4
- 8.0
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-754.18.2.el6
Fixed · RHSA-2019:2473
Red Hat Enterprise Linux 7
kernel-0:3.10.0-957.10.1.el7
Fixed · RHSA-2019:0512
Red Hat Enterprise Linux 7
kernel-alt-0:4.14.0-115.7.1.el7a
Fixed · RHSA-2019:0831
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-957.10.1.rt56.921.el7
Fixed · RHSA-2019:0514
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-754.18.2.el6 | Fixed | RHSA-2019:2473 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-957.10.1.el7 | Fixed | RHSA-2019:0512 |
| Red Hat Enterprise Linux 7 | kernel-alt-0:4.14.0-115.7.1.el7a | Fixed | RHSA-2019:0831 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-957.10.1.rt56.921.el7 | Fixed | RHSA-2019:0514 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (25)
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html vendor-advisoryx_refsource_SUSE
- http://www.securityfocus.com/bid/105525 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2019:0512 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0514 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0831 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:2473 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2018-17972 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1636349 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html mailing-listx_refsource_MLIST
- https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2 x_refsource_MISCPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-17972
- https://support.f5.com/csp/article/K27673650?utm_source=f5support&%3Butm_medium=RSS x_refsource_CONFIRM
- https://usn.ubuntu.com/3821-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3821-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3832-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3835-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3871-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3871-3/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3871-4/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3871-5/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3880-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3880-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-17972
Change history (0)
No recorded changes yet.