An AVX-512-optimized implementation of the mempcpy function in the GNU C Library (aka glibc or libc6) 2.27 and earlier may write data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://sourceware.org/bugzilla/show_bug.cgi?id=23196 | issue tracking third party advisory patch |
| https://www.exploit-db.com/exploits/44750/ | exploit vdb entry third party advisory broken link |
| http://www.securityfocus.com/bid/104256 | vdb entry broken link |
| https://access.redhat.com/errata/RHSA-2018:3092 | third party advisory vendor advisory |
| https://security.netapp.com/advisory/ntap-20190329-0001/ | broken link |
| https://security.netapp.com/advisory/ntap-20190401-0001/ | third party advisory |
| https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html | third party advisory patch |
| https://access.redhat.com/errata/RHBA-2019:0327 | third party advisory vendor advisory |
| https://usn.ubuntu.com/4416-1/ | third party advisory vendor advisory |