virtio: packed: fix unmap leak for indirect desc table (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.60 % · percentile 48 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: virtio: packed: fix unmap leak for indirect desc table When use_dma_api and premapped are true, then the do_unmap is false. Because the do_unmap is false, vring_unmap_extra_packed is not called by detach_buf_packed. if (unlikely(vq->do_unmap)) { curr = id; for (i = 0; i < state->num; i++) { vring_unmap_extra_packed(vq, &vq->packed.desc_extra[curr]); curr = vq->packed.desc_extra[curr].next; } } So the indirect desc table is not unmapped. This causes the unmap leak. So here, we check vq->use_dma_api instead. Synchronously, dma info is updated based on use_dma_api judgment This bug does not occur, because no driver use the premapped with indirect.
Weaknesses (CWE)
- CWE-401 — Missing Release of Memory after Effective Lifetime
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | Linux |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2024-24328
- GCVE · GCVE-0-2024-27066
CERT-FR advisories
- CERTFR-2024-AVI-0546 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.6 < 6.6.23cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.7.11cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.8 < 6.8.2
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected b319940f83c21bb4c1fabffe68a862be879a6193 < e142169aca5546ae6619c39a575cda8105362100 ; affected b319940f83c21bb4c1fabffe68a862be879a6193 < 75450ff8c6fe8755bf5b139b238eaf9739cfd64e ; affected b319940f83c21bb4c1fabffe68a862be879a6193 < 51bacd9d29bf98c3ebc65e4a0477bb86306b4140 ; affected b319940f83c21bb4c1fabffe68a862be879a6193 < d5c0ed17fea60cca9bc3bf1278b49ba79242bbcd |
| Linux · Linux | affected 6.6 ; unaffected 0 < 6.6 ; unaffected 6.6.23 ≤ 6.6.* ; unaffected 6.7.11 ≤ 6.7.* ; unaffected 6.8.2 ≤ 6.8.* ; unaffected 6.9 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |