| Name | CVE-2024-8612 |
| Description | A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueue_push as set in virtio_scsi_complete_req / virtio_blk_req_complete / virito_crypto_req_complete could be larger than the true size of the data which has been sent to guest. Once virtqueue_push() finally calls dma_memory_unmap to ummap the in_iov, it may call the address_space_write function to write back the data. Some uninitialized data may exist in the bounce.buffer, leading to an information leak. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1082406 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| qemu (PTS) | jessie, jessie (lts) | 1:2.1+dfsg-12+deb8u23 | vulnerable |
| stretch (security) | 1:2.8+dfsg-6+deb9u17 | vulnerable | |
| stretch (lts), stretch | 1:2.8+dfsg-6+deb9u19 | vulnerable | |
| buster (security), buster, buster (lts) | 1:3.1+dfsg-8+deb10u12 | vulnerable | |
| bullseye | 1:5.2+dfsg-11+deb11u3 | vulnerable | |
| bullseye (security) | 1:5.2+dfsg-11+deb11u2 | vulnerable | |
| bookworm | 1:7.2+dfsg-7+deb12u7 | vulnerable | |
| sid, trixie | 1:9.2.0+ds-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| qemu | source | jessie | (unfixed) | end-of-life | ||
| qemu | source | (unstable) | (unfixed) | 1082406 |
[bookworm] - qemu <no-dsa> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2313760
Mitigation addressing symptomps (but not root issue): https://gitlab.com/qemu-project/qemu/-/commit/637b0aa139565cb82a7b9269e62214f87082635c
qemu/1:9.1.1+ds-1 upload only addresses the symtoms but not the root cause of the issue.
Discussion on proper fix: https://lore.kernel.org/qemu-devel/20240926040912-mutt-send-email-mst@kernel.org/