Debian/bison: medium 5.5
GNU Bison before 3.7.1 has a use-after-free in _obstack_free in lib/obstack.c (called from gram_lex) when a '\0' byte is encountered. NOTE: there is a risk only if Bison is used with untrusted input,
Action: Upgrade bison to 2:3.7.2+dfsg-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2:3.7.2+dfsg-1 | - |
Fixed versions
| 2:3.7.2+dfsg-1 |
Sources
- osv: DEBIAN-CVE-2020-24240#Debian:13/bison
- https://security-tracker.debian.org/tracker/CVE-2020-24240
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