Description
The scheme48-send-definition function in cmuscheme48.el in Scheme 48 allows local users to write to arbitrary files via a symlink attack on /tmp/s48lose.tmp.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | scheme48 | 1.9-4 | — |
| Debian 13 | scheme48 | 1.9-4 | — |
| Debian 12 | scheme48 | 1.9-4 | — |
| Debian 6.0 | scheme48 | 1.8+dfsg-1+deb6u1 | DLA-0006-1 |
Advisories 1
- DLA-0006-1 scheme48 - security update Debian Security (DSA / DLA) · Mar 9, 2026