CVE-2020-25221
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-25221
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-25221.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2020-25221
- Related
- Published
- 2020-09-10T14:15:17Z
- Modified
- 2024-11-21T05:17:41Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting (caused by gate page mishandling) of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit process that can use ptrace() or processvmreadv(), aka CID-9fa2dd946743.
- References
-
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7
- https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a
- https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2
- https://security.netapp.com/advisory/ntap-20201001-0003/
- http://www.openwall.com/lists/oss-security/2020/09/10/4
- https://www.openwall.com/lists/oss-security/2020/09/08/4
- https://security-tracker.debian.org/tracker/CVE-2020-25221
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source