CVE-2019-7309 Other in n/a
A logic error in glibc's memcmp on x32 architecture may incorrectly report equal inputs, potentially affecting security checks relying on this function.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-7309?
CVE-2019-7309 is a medium-severity vulnerability in Gnu Glibc, published on 3 Feb 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.
Which versions are affected by CVE-2019-7309?
It affects 1 product.
Products include Gnu Glibc.
How do I fix CVE-2019-7309?
Apply the vendor's patch.
Is CVE-2019-7309 being exploited?
There is no known exploitation of CVE-2019-7309 in the wild and no public exploit code.
Other vulnerabilities in Gnu Glibc
Sources
Also known as DEBIAN-CVE-2019-7309, GHSA-2g8x-3m62-h85f, UBUNTU-CVE-2019-7309.