CVE-2018-17972
published 2018-10-03CVE-2018-17972: 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…
PriorityP429medium5.5CVSS 3.0
AVLACLPRLUINSUCHINAN
EPSS
0.35%
27.6th percentile
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
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | linux | < linux 4.18.20-1 (bookworm) | linux 4.18.20-1 (bookworm) |
| linux | linux_kernel | <= 4.18.11 | — |
| linux | linux_kernel | >= 0 < 4.18.20-1 | 4.18.20-1 |
| linux | linux_kernel | >= 0 < 4.18.20-1 | 4.18.20-1 |
| linux | linux_kernel | >= 0 < 4.18.20-1 | 4.18.20-1 |
| linux | linux_kernel | >= 0 < 4.18.20-1 | 4.18.20-1 |
| linux | linux_kernel | >= 0 < 3.13.0-165.215 | 3.13.0-165.215 |
| linux | linux_kernel | >= 0 < 4.4.0-139.165 | 4.4.0-139.165 |
| linux | linux_kernel | >= 0 < 4.15.0-44.47 | 4.15.0-44.47 |
| linux | linux_kernel | >= 0 < 4.15.0-45.48 | 4.15.0-45.48 |
| redhat | enterprise_linux_desktop | — | — |
| redhat | enterprise_linux_server | — | — |
| redhat | enterprise_linux_server | — | — |
| redhat | enterprise_linux_server_aus | — | — |
| redhat | enterprise_linux_server_eus | — | — |
| redhat | enterprise_linux_server_tus | — | — |
| redhat | enterprise_linux_workstation | — | — |
CVSS provenance
nvdv3.05.5MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:C/I:N/A:N
osv6.5MEDIUM
vendor_ubuntu6.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2019-02-07·CVSS 5.0
CVE-2018-10876 [MEDIUM] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)
Wen Xu discovered that an out-of-bounds write vulnerability existed in the
e
Ubuntu
Linux kernel (Trusty HWE) vulnerabilities
vendor_ubuntu·2019-02-04·CVSS 6.5
CVE-2018-1066 [MEDIUM] Linux kernel (Trusty HWE) vulnerabilities
Title: Linux kernel (Trusty HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
USN-3880-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
12.04 ESM.
It was discovered that the CIFS client implementation in the Linux kernel
did not properly handle setup negotiation during session recovery, leading
to a NULL pointer exception. An attacker could use this to create a
malicious CIFS server that caused a denial of service (client system
crash). (CVE-2018-1066)
Jann Horn discovered that the procfs file system implementation in the
Linux kernel did not properly restrict the ability to inspect the kernel
stack of an arb
Ubuntu
Linux kernel (AWS, GCP, KVM, OEM, Raspberry Pi 2) vulnerabilities
vendor_ubuntu·2019-02-04·CVSS 5.0
CVE-2018-10876 [MEDIUM] Linux kernel (AWS, GCP, KVM, OEM, Raspberry Pi 2) vulnerabilities
Title: Linux kernel (AWS, GCP, KVM, OEM, Raspberry Pi 2) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)
Wen Xu discovered that an out-of-bounds write v
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2019-02-04·CVSS 6.5
CVE-2018-1066 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the CIFS client implementation in the Linux kernel
did not properly handle setup negotiation during session recovery, leading
to a NULL pointer exception. An attacker could use this to create a
malicious CIFS server that caused a denial of service (client system
crash). (CVE-2018-1066)
Jann Horn discovered that the procfs file system implementation in the
Linux kernel did not properly restrict the ability to inspect the kernel
stack of an arbitrary task. A local attacker could use this to expose
sensitive information. (CVE-2018-17972)
Jann Horn discovered that the mremap() system call in the Linux kernel did
not properly flush the TLB when completing, potentially
Ubuntu
Linux kernel (HWE) vulnerabilities
vendor_ubuntu·2019-02-04·CVSS 5.0
CVE-2018-10876 [MEDIUM] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
USN-3871-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu
16.04 LTS.
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malici
Ubuntu
Linux kernel regression
vendor_ubuntu·2019-01-31·CVSS 5.0
[MEDIUM] Linux kernel regression
Title: Linux kernel regression
Summary: Multiple regressions were fixed in the Linux kernel.
USN-3871-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. Unfortunately, that update introduced regressions with docking
station displays and mounting ext4 file systems with the meta_bg
option enabled. This update fixes the problems.
We apologize for the inconvenience.
Original advisory details:
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesy
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2019-01-29·CVSS 5.0
CVE-2018-10876 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)
Wen Xu discovered that an out-of-bounds write vulnerability existed in the
ext4 file
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2018-12-03·CVSS 5.5
CVE-2018-17972 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Jann Horn discovered that the procfs file system implementation in the
Linux kernel did not properly restrict the ability to inspect the kernel
stack of an arbitrary task. A local attacker could use this to expose
sensitive information. (CVE-2018-17972)
Jann Horn discovered that the mremap() system call in the Linux kernel did
not properly flush the TLB when completing, potentially leaving access to a
physical page after it has been released to the page allocator. A local
attacker could use this to cause a denial of service (system crash), expose
sensitive information, or possibly execute arbitrary code. (CVE-2018-18281)
It was discovered that the BPF verifier in the Linux kernel did no
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2018-11-30·CVSS 5.5
CVE-2018-17972 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Jann Horn discovered that the procfs file system implementation in the
Linux kernel did not properly restrict the ability to inspect the kernel
stack of an arbitrary task. A local attacker could use this to expose
sensitive information. (CVE-2018-17972)
Jann Horn discovered that the mremap() system call in the Linux kernel did
not properly flush the TLB when completing, potentially leaving access to a
physical page after it has been released to the page allocator. A local
attacker could use this to cause a denial of service (system crash), expose
sensitive information, or possibly execute arbitrary code. (CVE-2018-18281)
It was discovered that the BPF verifier in the Linux kernel
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2018-11-14·CVSS 5.5
CVE-2018-10880 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly ensure that xattr information remained in inode
bodies. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10880)
It was discovered that the alarmtimer implementation in the Linux kernel
contained an integer overflow vulnerability. A local attacker could use
this to cause a denial of service. (CVE-2018-13053)
Wen Xu discovered that the f2fs filesystem implementation in the Linux
kernel did not properly validate metadata. An attacker could use this to
construct a malicious f2fs image that, when mounted, co
Ubuntu
Linux kernel (Xenial HWE) vulnerabilities
vendor_ubuntu·2018-11-14·CVSS 5.5
CVE-2018-10880 [MEDIUM] Linux kernel (Xenial HWE) vulnerabilities
Title: Linux kernel (Xenial HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
USN-3821-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.
Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly ensure that xattr information remained in inode
bodies. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10880)
It was discovered that the alarmtimer implementation in the Linux kernel
contained an integer overflow vulnerability. A local attacker could use
this to cause a denial of
Red Hat
kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
vendor_redhat·2018-09-27·CVSS 5.5
CVE-2018-17972 [MEDIUM] CWE-200 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
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.
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel. An attacker with a local account can trick the stack unwinder code to leak stack contents to userspace. The fix allows only root to inspect the kernel stack of an arbitrary task.
Package: kernel (Red Hat Enterprise Linux 5) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterpri
Debian
CVE-2018-17972: linux - An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the ...
vendor_debian·2018·CVSS 5.5
CVE-2018-17972 [MEDIUM] CVE-2018-17972: linux - An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the ...
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.
Scope: local
bookworm: resolved (fixed in 4.18.20-1)
bullseye: resolved (fixed in 4.18.20-1)
forky: resolved (fixed in 4.18.20-1)
sid: resolved (fixed in 4.18.20-1)
trixie: resolved (fixed in 4.18.20-1)
GHSA
GHSA-qgp4-5xqg-pc3p: An issue was discovered in the proc_pid_stack function in fs/proc/base
ghsa_unreviewed·2022-05-13
CVE-2018-17972 [MEDIUM] CWE-362 GHSA-qgp4-5xqg-pc3p: An issue was discovered in the proc_pid_stack function in fs/proc/base
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.
Project0
Mitigations are attack surface, too - Project Zero
project_zero·2020-02-01
CVE-2018-17972 Mitigations are attack surface, too - Project Zero
Posted by Jann Horn, Project Zero
Introduction
This blog post discusses a bug leading to memory corruption in Samsung's Android kernel (specifically the kernel of the Galaxy A50, A505FN - I haven't looked at Samsung's kernels for other devices). I will describe the bug and how I wrote a (very unreliable) exploit for it. I will also describe how a second vulnerability, which had long been fixed in the upstream kernel, the upstream stable releases, and the Android common kernel, but not in Samsung's kernel, aided in its exploitation.
If you want to look at the corresponding source code yourself, you can download Samsung's kernel sources for the A505FN from here. The versions seem to be sorted such that the newer ones are at the top of the list; A505FNXXS3ASK9 is the newest one at the ti
OSV
linux-azure vulnerabilities
osv·2019-02-07·CVSS 5.5
CVE-2018-10876 [MEDIUM] linux-azure vulnerabilities
linux-azure vulnerabilities
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)
Wen Xu discovered that an out-of-bounds write vulnerability existed in the
ext4 filesystem implementation in the Linux kernel. An attacker could use
this to c
OSV
linux-aws, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities
osv·2019-02-04·CVSS 5.5
CVE-2018-10876 [MEDIUM] linux-aws, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities
linux-aws, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)
Wen Xu discovered that an out-of-bounds write vulnerability existed in the
ext4 filesystem implementation in the
OSV
linux-hwe, linux-aws-hwe, linux-gcp vulnerabilities
osv·2019-02-04·CVSS 5.5
[MEDIUM] linux-hwe, linux-aws-hwe, linux-gcp vulnerabilities
linux-hwe, linux-aws-hwe, linux-gcp vulnerabilities
USN-3871-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu
16.04 LTS.
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial
OSV
linux vulnerabilities
osv·2019-02-04·CVSS 6.5
CVE-2018-1066 [MEDIUM] linux vulnerabilities
linux vulnerabilities
It was discovered that the CIFS client implementation in the Linux kernel
did not properly handle setup negotiation during session recovery, leading
to a NULL pointer exception. An attacker could use this to create a
malicious CIFS server that caused a denial of service (client system
crash). (CVE-2018-1066)
Jann Horn discovered that the procfs file system implementation in the
Linux kernel did not properly restrict the ability to inspect the kernel
stack of an arbitrary task. A local attacker could use this to expose
sensitive information. (CVE-2018-17972)
Jann Horn discovered that the mremap() system call in the Linux kernel did
not properly flush the TLB when completing, potentially leaving access to a
physical page after it has been released to the page allocat
OSV
linux regression
osv·2019-01-31·CVSS 5.5
[MEDIUM] linux regression
linux regression
USN-3871-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. Unfortunately, that update introduced regressions with docking
station displays and mounting ext4 file systems with the meta_bg
option enabled. This update fixes the problems.
We apologize for the inconvenience.
Original advisory details:
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to constr
OSV
linux vulnerabilities
osv·2019-01-29·CVSS 5.5
CVE-2018-10876 [MEDIUM] linux vulnerabilities
linux vulnerabilities
Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)
Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)
Wen Xu discovered that an out-of-bounds write vulnerability existed in the
ext4 filesystem implementation in the Linux kernel. An attacker could use
this to constru
OSV
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
osv·2018-11-14·CVSS 5.5
CVE-2018-10880 [MEDIUM] linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly ensure that xattr information remained in inode
bodies. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10880)
It was discovered that the alarmtimer implementation in the Linux kernel
contained an integer overflow vulnerability. A local attacker could use
this to cause a denial of service. (CVE-2018-13053)
Wen Xu discovered that the f2fs filesystem implementation in the Linux
kernel did not properly validate metadata. An attacker could use this to
construct a malicious f2fs image that, when mounted, could cause a denial
of serv
OSV
linux-lts-xenial, linux-aws vulnerabilities
osv·2018-11-14·CVSS 5.5
[MEDIUM] linux-lts-xenial, linux-aws vulnerabilities
linux-lts-xenial, linux-aws vulnerabilities
USN-3821-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.
Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly ensure that xattr information remained in inode
bodies. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10880)
It was discovered that the alarmtimer implementation in the Linux kernel
contained an integer overflow vulnerability. A local attacker could use
this to cause a denial of service. (CVE-2018-13053)
Wen Xu discovered that the f2fs filesystem
OSV
CVE-2018-17972: An issue was discovered in the proc_pid_stack function in fs/proc/base
osv·2018-10-03·CVSS 5.5
CVE-2018-17972 [MEDIUM] CVE-2018-17972: An issue was discovered in the proc_pid_stack function in fs/proc/base
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks [fedora-all]
bugzilla·2018-10-05·CVSS 5.5
CVE-2018-17972 [MEDIUM] CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks [fedora-all]
CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects m
Bugzilla
CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
bugzilla·2018-10-05·CVSS 5.5
CVE-2018-17972 [MEDIUM] CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel . An attacker with a local account can trick the stack unwinder code to leak stack contents to userspace. The fix allows only root may inspect the kernel stack of an arbitrary task.
Upstream patch:
https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1636352]
---
kernel-4.18.13-100.fc27, kernel-headers-4.18.13-100.fc27, kernel-tools-4.18.13-100.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.
---
This issue has been addressed in the follo
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.htmlhttp://www.securityfocus.com/bid/105525https://access.redhat.com/errata/RHSA-2019:0512https://access.redhat.com/errata/RHSA-2019:0514https://access.redhat.com/errata/RHSA-2019:0831https://access.redhat.com/errata/RHSA-2019:2473https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlhttps://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlhttps://lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlhttps://marc.info/?l=linux-fsdevel&m=153806242024956&w=2https://support.f5.com/csp/article/K27673650?utm_source=f5support&%3Butm_medium=RSShttps://usn.ubuntu.com/3821-1/https://usn.ubuntu.com/3821-2/https://usn.ubuntu.com/3832-1/https://usn.ubuntu.com/3835-1/https://usn.ubuntu.com/3871-1/https://usn.ubuntu.com/3871-3/https://usn.ubuntu.com/3871-4/https://usn.ubuntu.com/3871-5/https://usn.ubuntu.com/3880-1/https://usn.ubuntu.com/3880-2/http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.htmlhttp://www.securityfocus.com/bid/105525https://access.redhat.com/errata/RHSA-2019:0512https://access.redhat.com/errata/RHSA-2019:0514https://access.redhat.com/errata/RHSA-2019:0831https://access.redhat.com/errata/RHSA-2019:2473https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlhttps://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlhttps://lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlhttps://marc.info/?l=linux-fsdevel&m=153806242024956&w=2https://support.f5.com/csp/article/K27673650?utm_source=f5support&%3Butm_medium=RSShttps://usn.ubuntu.com/3821-1/https://usn.ubuntu.com/3821-2/https://usn.ubuntu.com/3832-1/https://usn.ubuntu.com/3835-1/https://usn.ubuntu.com/3871-1/https://usn.ubuntu.com/3871-3/https://usn.ubuntu.com/3871-4/https://usn.ubuntu.com/3871-5/https://usn.ubuntu.com/3880-1/https://usn.ubuntu.com/3880-2/
2018-10-03
Published