CVE-2024-27066
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
virtio: packed: fix unmap leak for indirect desc table
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| b319940f83c21bb4c1fabffe68a862be879a6193 | affected | git | e142169aca5546ae6619c39a575cda8105362100 | Unavailable | None listed |
| b319940f83c21bb4c1fabffe68a862be879a6193 | affected | git | 75450ff8c6fe8755bf5b139b238eaf9739cfd64e | Unavailable | None listed |
| b319940f83c21bb4c1fabffe68a862be879a6193 | affected | git | 51bacd9d29bf98c3ebc65e4a0477bb86306b4140 | Unavailable | None listed |
| b319940f83c21bb4c1fabffe68a862be879a6193 | affected | git | d5c0ed17fea60cca9bc3bf1278b49ba79242bbcd | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.6 | Unavailable | None listed |
| 6.6.23 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.7.11 | unaffected | semver | Unavailable | 6.7.* | None listed |
| 6.8.2 | unaffected | semver | Unavailable | 6.8.* | None listed |
| 6.9 | unaffected | original_commit_for_fix | Unavailable | * | None listed |