CVE-2018-9517
published 2018-12-07CVE-2018-9517: In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution…
PriorityP428medium6.7CVSS 3.0
AVLACLPRHUINSUCHIHAH
EPSS
0.42%
34.8th percentile
In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 4.14.2-1 (bookworm) | linux 4.14.2-1 (bookworm) |
| google_inc | android | — | — |
| linux | linux_kernel | >= 0 < 4.14.2-1 | 4.14.2-1 |
| linux | linux_kernel | >= 0 < 4.14.2-1 | 4.14.2-1 |
| linux | linux_kernel | >= 0 < 4.14.2-1 | 4.14.2-1 |
| linux | linux_kernel | >= 0 < 4.14.2-1 | 4.14.2-1 |
| linux | linux_kernel | >= 0 < 4.4.0-145.171 | 4.4.0-145.171 |
CVSS provenance
nvdv3.06.7MEDIUMCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv7.0HIGH
vendor_ubuntu7.0HIGH
vendor_debian6.7MEDIUM
vendor_redhat6.7MEDIUM
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GHSA
GHSA-26v4-wj6c-25pg: In pppol2tp_connect, there is possible memory corruption due to a use after free
ghsa_unreviewed·2022-05-14
CVE-2018-9517 [HIGH] CWE-416 GHSA-26v4-wj6c-25pg: In pppol2tp_connect, there is possible memory corruption due to a use after free
In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931.
OSV
linux-lts-xenial, linux-aws vulnerabilities
osv·2019-04-02·CVSS 7.0
CVE-2017-18249 [HIGH] linux-lts-xenial, linux-aws vulnerabilities
linux-lts-xenial, linux-aws vulnerabilities
USN-3932-1 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.
It was discovered that a race condition existed in the f2fs file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service. (CVE-2017-18249)
Wen Xu discovered that the f2fs file system 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 service (system crash). (CVE-2018-13097, CVE-2018-13099, CVE-2018-13100,
CVE-2018-14614, CVE-2018-14616)
Wen Xu and Po-Ning Tseng
OSV
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
osv·2019-04-02·CVSS 7.0
CVE-2017-18249 [HIGH] linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
It was discovered that a race condition existed in the f2fs file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service. (CVE-2017-18249)
Wen Xu discovered that the f2fs file system 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 service (system crash). (CVE-2018-13097, CVE-2018-13099, CVE-2018-13100,
CVE-2018-14614, CVE-2018-14616)
Wen Xu and Po-Ning Tseng discovered that btrfs file system implementation
in the Linux kernel did not properly validate metadata. An attacker could
use this to construct a malicious btrfs image that, when mo
OSV
CVE-2018-9517: In pppol2tp_connect, there is possible memory corruption due to a use after free
osv·2018-12-07·CVSS 6.7
CVE-2018-9517 [MEDIUM] CVE-2018-9517: In pppol2tp_connect, there is possible memory corruption due to a use after free
In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931.
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2019-04-02·CVSS 7.0
CVE-2017-18249 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that a race condition existed in the f2fs file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service. (CVE-2017-18249)
Wen Xu discovered that the f2fs file system 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 service (system crash). (CVE-2018-13097, CVE-2018-13099, CVE-2018-13100,
CVE-2018-14614, CVE-2018-14616)
Wen Xu and Po-Ning Tseng discovered that btrfs file system implementation
in the Linux kernel did not properly validate metadata. An attacker could
use this to construct a malicious
Ubuntu
Linux kernel (Xenial HWE) vulnerabilities
vendor_ubuntu·2019-04-02·CVSS 7.0
CVE-2017-18249 [HIGH] Linux kernel (Xenial HWE) vulnerabilities
Title: Linux kernel (Xenial HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
USN-3932-1 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.
It was discovered that a race condition existed in the f2fs file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service. (CVE-2017-18249)
Wen Xu discovered that the f2fs file system 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 service (system crash). (CVE-2018-13097, CVE-2018-13099, CVE
Red Hat
kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create()
vendor_redhat·2018-09-14·CVSS 6.7
CVE-2018-9517 [MEDIUM] CWE-367 kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create()
kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create()
In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931.
A race condition between pppol2tp_session_create() and l2tp_eth_create() in net/l2tp/l2tp_netlink.c was found in the Linux kernel. Calling l2tp_tunnel_find() may result in a new tunnel being created with tunnel id of a previously removed tunnel which wouldn't be protected by the reference counter.
Package: kernel (Red Hat Enterprise Linux 5) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Pa
Debian
CVE-2018-9517: linux - In pppol2tp_connect, there is possible memory corruption due to a use after free...
vendor_debian·2018·CVSS 6.7
CVE-2018-9517 [MEDIUM] CVE-2018-9517: linux - In pppol2tp_connect, there is possible memory corruption due to a use after free...
In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931.
Scope: local
bookworm: resolved (fixed in 4.14.2-1)
bullseye: resolved (fixed in 4.14.2-1)
forky: resolved (fixed in 4.14.2-1)
sid: resolved (fixed in 4.14.2-1)
trixie: resolved (fixed in 4.14.2-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-9517 kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() [fedora-all]
bugzilla·2018-09-19·CVSS 6.7
CVE-2018-9517 [MEDIUM] CVE-2018-9517 kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() [fedora-all]
CVE-2018-9517 kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() [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 a
Bugzilla
CVE-2018-9517 kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create()
bugzilla·2018-09-19·CVSS 6.7
CVE-2018-9517 [MEDIUM] CVE-2018-9517 kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create()
CVE-2018-9517 kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create()
A race condition between pppol2tp_session_create() and l2tp_eth_create() in net/l2tp/l2tp_netlink.c in the Linux kernel. Calling l2tp_tunnel_find() may result in a new tunnel being created with tunnel id of a previous removed tunnel which wouldn't be protected by the reference counter.
An upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f026bc29a8e093edfbb2a77700454b285c97e8ad
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1631046]
---
This was fixed for Fedora with the 4.14 rebases.
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 7
Via RHSA-2019:2029 https://acces
https://access.redhat.com/errata/RHSA-2019:2029https://access.redhat.com/errata/RHSA-2019:2043https://source.android.com/security/bulletin/pixel/2018-09-01https://usn.ubuntu.com/3932-1/https://usn.ubuntu.com/3932-2/https://access.redhat.com/errata/RHSA-2019:2029https://access.redhat.com/errata/RHSA-2019:2043https://source.android.com/security/bulletin/pixel/2018-09-01https://usn.ubuntu.com/3932-1/https://usn.ubuntu.com/3932-2/
2018-12-07
Published