cve-2020-25221
Vulnerability from cvelistv5
Published
2020-09-10 13:39
Modified
2024-08-04 15:33
Severity ?
Summary
get_gate_page 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 process_vm_readv(), aka CID-9fa2dd946743.
References
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2020/09/10/4Mailing List, Third Party Advisory
cve@mitre.orghttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7Release Notes, Vendor Advisory
cve@mitre.orghttps://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73aIssue Tracking, Patch, Vendor Advisory
cve@mitre.orghttps://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2Issue Tracking, Patch, Vendor Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20201001-0003/Third Party Advisory
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2020/09/08/4Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/09/10/4Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73aIssue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20201001-0003/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2020/09/08/4Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

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}


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  • 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.