CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
34.4%
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the
Linux kernel before 5.7.5. The copy-on-write implementation can grant
unintended write access because of a race condition in a THP mapcount
check, aka CID-c444eb564fb1.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | <Â 4.15.0-115.116 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | <Â 5.4.0-45.49 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | <Â 4.15.0-1080.84 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | <Â 5.4.0-1022.22 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | <Â 5.4.0-1022.22~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | <Â 4.15.0-1080.84~16.04.1 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | <Â 5.4.0-1023.23 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | <Â 4.15.0-1093.103~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-4.15 | <Â 4.15.0-1093.103 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-5.4 | <Â 5.4.0-1023.23~18.04.1 | UNKNOWN |
bugs.chromium.org/p/project-zero/issues/detail?id=2045
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5
git.kernel.org/linus/c444eb564fb16645c172d550359cb3d75fe8a040
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c444eb564fb16645c172d550359cb3d75fe8a040
launchpad.net/bugs/cve/CVE-2020-29368
nvd.nist.gov/vuln/detail/CVE-2020-29368
security-tracker.debian.org/tracker/CVE-2020-29368
ubuntu.com/security/notices/USN-4752-1
www.cve.org/CVERecord?id=CVE-2020-29368
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
34.4%