CVE-2018-1000204
Vulnerability from cvelistv5
Published
2018-06-26 14:00
Modified
2024-08-05 12:40
Severity ?
Summary
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
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2018/06/26/3Mailing List, Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824Patch, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2018/07/msg00015.htmlThird Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2018/07/msg00016.htmlThird Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2018/07/msg00020.htmlThird Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3696-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3696-2/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3752-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3752-2/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3752-3/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3754-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2018/06/26/3Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/07/msg00015.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/07/msg00016.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/07/msg00020.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3696-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3696-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3752-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3752-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3752-3/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3754-1/Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

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  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
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