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CVE-2020-9391
Published: Feb 25, 2020
Modified: Aug 4, 2024
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
https://bugzilla.redhat.com/show_bug.cgi?id=1797052
x_refsource_MISC
[oss-security] 20200225 CVE-2020-9391: Ignoring the top byte of addresses in brk causes heap corruption (AArch64)
mailing-list
x_refsource_MLIST
FEDORA-2020-3cd64d683c
vendor-advisory
x_refsource_FEDORA
https://security.netapp.com/advisory/ntap-20200313-0003/
x_refsource_CONFIRM
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