CVE-2020-9391
- State
- Published
- Severity
- Not scored
- Published
- Feb 25, 2020
- Updated
- Aug 4, 2024
- Reserved
- Feb 25, 2020
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dcde237319e626d1ec3c9d8b7613032f0fd4663a
- https://bugzilla.redhat.com/show_bug.cgi?id=1797052
- [oss-security] 20200225 CVE-2020-9391: Ignoring the top byte of addresses in brk causes heap corruption (AArch64)mailing-list
- FEDORA-2020-3cd64d683cvendor-advisory
- https://security.netapp.com/advisory/ntap-20200313-0003/
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