CVE-2020-9391

MEDIUM

5.5

Description

An issue was discovered in the Linux kernel 5.4 and 5.5 through 5.5.6 on the AArch64 architecture. It ignores the top byte in the address passed to the brk system call, potentially moving the memory break downwards when the application expects it to move upwards, aka CID-dcde237319e6. This has been observed to cause heap corruption with the GNU C Library malloc implementation.

CVE Details

CVSS v3.1 Score5.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/25/2020

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

fedoraproject:fedoralinux:linux_kernelnetapp:active_iq_unified_managernetapp:cloud_backupnetapp:data_availability_servicesnetapp:h410cnetapp:h410c_firmwarenetapp:hci_management_nodenetapp:solidfirenetapp:steelstore_cloud_integrated_storage

Weaknesses (CWE)

CWE-787

References

http://www.openwall.com/lists/oss-security/2020/02/25/6(cve@mitre.org)

https://bugzilla.redhat.com/show_bug.cgi?id=1797052(cve@mitre.org)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dcde237319e626d1ec3c9d8b7613032f0fd4663a(cve@mitre.org)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O4LH35HOPBJIKYHYFXMBBM75DN75PZHZ/(cve@mitre.org)

https://security.netapp.com/advisory/ntap-20200313-0003/(cve@mitre.org)

http://www.openwall.com/lists/oss-security/2020/02/25/6(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=1797052(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dcde237319e626d1ec3c9d8b7613032f0fd4663a(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O4LH35HOPBJIKYHYFXMBBM75DN75PZHZ/(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20200313-0003/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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