Integer Overflow or Wraparound Affecting kernel-debug package, versions <0:3.10.0-957.el7
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Test your applications- Snyk ID SNYK-RHEL7-KERNELDEBUG-4833905
- published 26 Jul 2021
- disclosed 21 Mar 2018
Introduced: 21 Mar 2018
CVE-2018-8781 Open this link in a new tabHow to fix?
Upgrade RHEL:7 kernel-debug to version 0:3.10.0-957.el7 or higher.
This issue was patched in RHSA-2018:3083.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.
References
- https://access.redhat.com/security/cve/CVE-2018-8781
- https://www.debian.org/security/2018/dsa-4187
- https://www.debian.org/security/2018/dsa-4188
- https://patchwork.freedesktop.org/patch/211845/
- https://research.checkpoint.com/mmap-vulnerabilities-linux-kernel/
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
- https://access.redhat.com/errata/RHSA-2018:3083
- https://usn.ubuntu.com/3654-1/
- https://usn.ubuntu.com/3654-2/
- https://usn.ubuntu.com/3656-1/
- https://usn.ubuntu.com/3674-1/
- https://usn.ubuntu.com/3674-2/
- https://usn.ubuntu.com/3677-1/
- https://usn.ubuntu.com/3677-2/