CVE-2018-18397
Vulnerability from cvelistv5
Published
2018-12-12 07:00
Modified
2024-08-05 11:08
Severity ?
Summary
The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c.
References
cve@mitre.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1Patch, Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHBA-2019:0327Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:0163Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:0202Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:0324Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:0831Third Party Advisory
cve@mitre.orghttps://bugs.chromium.org/p/project-zero/issues/detail?id=1700Exploit, Issue Tracking, Third Party Advisory
cve@mitre.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87Patch, Vendor Advisory
cve@mitre.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7Patch, Vendor Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1Patch, Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3901-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3901-2/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3903-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3903-2/Third Party Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • 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.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.