CVE-2018-14656
published 2018-10-08CVE-2018-14656: A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address…
PriorityP427medium5.5CVSS 3.0
AVLACLPRLUINSUCHINAN
EPSS
0.53%
41.7th percentile
A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 4.18.6-1 (bookworm) | linux 4.18.6-1 (bookworm) |
| linux | linux_kernel | <= 4.18 | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 4.18.6-1 | 4.18.6-1 |
| linux | linux_kernel | >= 0 < 4.18.6-1 | 4.18.6-1 |
| linux | linux_kernel | >= 0 < 4.18.6-1 | 4.18.6-1 |
| linux | linux_kernel | >= 0 < 4.18.6-1 | 4.18.6-1 |
CVSS provenance
nvdv3.05.5MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:P/I:N/A:N
osv5.5MEDIUM
vendor_debian7.0HIGH
vendor_redhat7.0HIGH
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Red Hat
kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler
vendor_redhat·2018-09-13·CVSS 7.0
CVE-2018-14656 [HIGH] CWE-20 kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler
kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler
A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.
A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.
Package: kernel (Red Hat Enterprise Linux 5) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-alt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8)
Debian
CVE-2018-14656: linux - A missing address check in the callers of the show_opcodes() in the Linux kernel...
vendor_debian·2018·CVSS 7.0
CVE-2018-14656 [HIGH] CVE-2018-14656: linux - A missing address check in the callers of the show_opcodes() in the Linux kernel...
A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.
Scope: local
bookworm: resolved (fixed in 4.18.6-1)
bullseye: resolved (fixed in 4.18.6-1)
forky: resolved (fixed in 4.18.6-1)
sid: resolved (fixed in 4.18.6-1)
trixie: resolved (fixed in 4.18.6-1)
GHSA
GHSA-cgpj-vcc9-76qx: A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel a
ghsa_unreviewed·2022-05-13
CVE-2018-14656 [MEDIUM] CWE-20 GHSA-cgpj-vcc9-76qx: A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel a
A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.
OSV
CVE-2018-14656: A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel a
osv·2018-10-08·CVSS 5.5
CVE-2018-14656 [MEDIUM] CVE-2018-14656: A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel a
A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-14656 kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler
bugzilla·2018-09-17·CVSS 7.0
CVE-2018-14656 [HIGH] CVE-2018-14656 kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler
CVE-2018-14656 kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler
A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.
References:
https://bugs.chromium.org/p/project-zero/issues/detail?id=1650
https://lore.kernel.org/lkml/[email protected]/T/
https://seclists.org/oss-sec/2018/q4/9
An upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=342db04ae71273322f0011384a9ed414df8bdae4
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1629942]
---
This is fixed for Fedora with the 4.18.6 stable updates.
---
External References:
http
Bugzilla
CVE-2018-14656 kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler [fedora-all]
bugzilla·2018-09-17·CVSS 7.0
CVE-2018-14656 [HIGH] CVE-2018-14656 kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler [fedora-all]
CVE-2018-14656 kernel: Arbitrary Kernel Read into dmesg via Missing Address Check in segfault Handler [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 issu
http://www.securitytracker.com/id/1041804https://bugs.chromium.org/p/project-zero/issues/detail?id=1650https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14656https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=342db04ae71273322f0011384a9ed414df8bdae4https://lore.kernel.org/lkml/20180828154901.112726-1-jannh%40google.com/T/https://seclists.org/oss-sec/2018/q4/9http://www.securitytracker.com/id/1041804https://bugs.chromium.org/p/project-zero/issues/detail?id=1650https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14656https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=342db04ae71273322f0011384a9ed414df8bdae4https://lore.kernel.org/lkml/20180828154901.112726-1-jannh%40google.com/T/https://seclists.org/oss-sec/2018/q4/9
2018-10-08
Published