Information Exposure Affecting kernel-core package, versions <0:4.18.0-147.el8
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-KERNELCORE-3542521
- published26 Jul 2021
- disclosed6 Jan 2019
Introduced: 6 Jan 2019
CVE-2019-5489 (opens in a new tab)How to fix?
Upgrade RHEL:8 kernel-core to version 0:4.18.0-147.el8 or higher.
This issue was patched in RHSA-2019:3517.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may be possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server.
References
- http://www.securityfocus.com/bid/106478
- https://seclists.org/bugtraq/2019/Jun/26
- https://security.netapp.com/advisory/ntap-20190307-0001/
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-pagecache-en
- https://access.redhat.com/security/cve/CVE-2019-5489
- https://www.debian.org/security/2019/dsa-4465
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=574823bfab82d9d8fa47f422778043fbb4b4f50e
- https://arxiv.org/abs/1901.01161
- https://bugzilla.suse.com/show_bug.cgi?id=1120843
- https://github.com/torvalds/linux/commit/574823bfab82d9d8fa47f422778043fbb4b4f50e
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.theregister.co.uk/2019/01/05/boffins_beat_page_cache/
- https://lists.debian.org/debian-lts-announce/2019/06/msg00010.html
- https://lists.debian.org/debian-lts-announce/2019/06/msg00011.html
- https://access.redhat.com/errata/RHSA-2019:3517
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html