CVE-2020-9391
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedFeb 25, 2020
First seenFeb 25, 2020
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.5 ≤ v ≤ 5.5.6, 5.4 | — |
| fedoraproject fedora | 31 | — |
| netapp active_iq_unified_manager | No range specified | — |
| netapp cloud_backup | No range specified | — |
| netapp data_availability_services | No range specified | — |
| netapp hci_management_node | No range specified | — |
| netapp solidfire | No range specified | — |
| netapp steelstore_cloud_integrated_storage | No range specified | — |
| netapp h410c_firmware | No range specified | — |
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