CVE-2018-1000204 Affecting kernel-uek-devel package, versions <0:3.8.13-118.29.1.el7uek
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-ORACLE7-KERNELUEKDEVEL-2531260
- published10 Apr 2022
- disclosed26 Jun 2018
Introduced: 26 Jun 2018
CVE-2018-1000204 (opens in a new tab)How to fix?
Upgrade Oracle:7 kernel-uek-devel to version 0:3.8.13-118.29.1.el7uek or higher.
This issue was patched in ELSA-2019-4316.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-uek-devel package and not the kernel-uek-devel package as distributed by Oracle.
See How to fix? for Oracle:7 relevant fixed versions and status.
Linux Kernel version 3.18 to 4.16 incorrectly handles an SG_IO ioctl on /dev/sg0 with dxfer_direction=SG_DXFER_FROM_DEV and an empty 6-byte cmdp. This may lead to copying up to 1000 kernel heap pages to the userspace. This has been fixed upstream in https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 already. The problem has limited scope, as users don't usually have permissions to access SCSI devices. On the other hand, e.g. the Nero user manual suggests doing chmod o+r+w /dev/sg* to make the devices accessible. NOTE: third parties dispute the relevance of this report, noting that the requirement for an attacker to have both the CAP_SYS_ADMIN and CAP_SYS_RAWIO capabilities makes it "virtually impossible to exploit.
References
- https://linux.oracle.com/cve/CVE-2018-1000204.html
- https://linux.oracle.com/errata/ELSA-2018-4288.html
- https://linux.oracle.com/errata/ELSA-2018-4300.html
- https://linux.oracle.com/errata/ELSA-2018-4301.html
- https://linux.oracle.com/errata/ELSA-2019-4316.html
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
- http://www.openwall.com/lists/oss-security/2018/06/26/3
- https://access.redhat.com/errata/RHSA-2018:2948
- https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824
- https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
- https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
- https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html
- https://usn.ubuntu.com/3696-1/
- https://usn.ubuntu.com/3696-2/
- https://usn.ubuntu.com/3752-1/
- https://usn.ubuntu.com/3752-2/
- https://usn.ubuntu.com/3752-3/
- https://usn.ubuntu.com/3754-1/