In the Linux kernel through 4.20.11, af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8912
Reference (s):
- BID:107063
- URL: http://www.securityfocus.com/bid/107063
- http://patchwork.ozlabs.org/patch/1042902/
- REDHAT:RHSA-2020:0174
- URL: https://access.redhat.com/errata/RHSA-2020:0174