| Name | CVE-2021-26934 |
| Description | An issue was discovered in the Linux kernel 4.18 through 5.10.16, as used by Xen. The backend allocation (aka be-alloc) mode of the drm_xen_front drivers was not meant to be a supported configuration, but this wasn't stated accordingly in its support status entry. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | vulnerable |
| stretch (security) | 4.9.320-2 | fixed |
| stretch (lts), stretch | 4.9.320-3 | fixed |
| buster (security), buster, buster (lts) | 4.19.316-1 | vulnerable |
| bullseye | 5.10.223-1 | vulnerable |
| bullseye (security) | 5.10.226-1 | vulnerable |
| bookworm | 6.1.115-1 | vulnerable |
| bookworm (security) | 6.1.119-1 | vulnerable |
| trixie | 6.12.5-1 | vulnerable |
| sid | 6.12.6-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| linux | source | stretch | (not affected) | | | |
| linux | source | (unstable) | (unfixed) | unimportant | | |
Notes
[stretch] - linux <not-affected> (Vulnerable code not present)
https://xenbits.xen.org/xsa/advisory-363.html
Driver never was meant to be supported and the patch in src:xen will only
update SUPPORT.md to explicitly document the fact.