CVE-2021-47305
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
dma-buf/sync_file: Don't leak fences on merge failure
In the Linux kernel, the following vulnerability has been resolved: dma-buf/sync_file: Don't leak fences on merge failure Each add_fence() call does a dma_fence_get() on the relevant fence. In the error path, we weren't calling dma_fence_put() so all those fences got leaked. Also, in the krealloc_array failure case, we weren't freeing the fences array. Instead, ensure that i and fences are always zero-initialized and dma_fence_put() all the fences and kfree(fences) on every error path.
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) |
|---|---|---|---|---|---|
| a02b9dc90d844cc7df7b63264e7920cc425052d9 | affected | git | 19f51c2529339280d2c8c6427cd3e21ddf1ac3f8 | Unavailable | None listed |
| a02b9dc90d844cc7df7b63264e7920cc425052d9 | affected | git | e0355a0ad31a1d677b2a4514206de4902bd550e8 | Unavailable | None listed |
| a02b9dc90d844cc7df7b63264e7920cc425052d9 | affected | git | 41f45e91c92c8480242ea448d54e28c753b13902 | Unavailable | None listed |
| a02b9dc90d844cc7df7b63264e7920cc425052d9 | affected | git | 0d514185ae792d3a1903c8e1a83899aa996705ce | Unavailable | None listed |
| a02b9dc90d844cc7df7b63264e7920cc425052d9 | affected | git | 19edcd97727aae9362444a859a24d99a8730cb27 | Unavailable | None listed |
| a02b9dc90d844cc7df7b63264e7920cc425052d9 | affected | git | ffe000217c5068c5da07ccb1c0f8cce7ad767435 | 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) |
|---|---|---|---|---|---|
| 4.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.9 | Unavailable | None listed |
| 4.14.241 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.199 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.135 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.53 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.13.5 | unaffected | semver | Unavailable | 5.13.* | None listed |
| 5.14 | unaffected | original_commit_for_fix | Unavailable | * | None listed |