CVE-2021-47305
- Source
- https://cve.org/CVERecord?id=CVE-2021-47305
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47305.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47305
- Downstream
- Related
- Published
- 2024-05-21T15:15:18Z
- Modified
- 2026-03-15T22:43:10Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435
- https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705ce
- https://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27
- https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8
- https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902
- https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47305.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "4.9"
},
{
"fixed": "4.14.241"
}
]
},
{
"events": [
{
"introduced": "4.15"
},
{
"fixed": "4.19.199"
}
]
},
{
"events": [
{
"introduced": "4.20"
},
{
"fixed": "5.4.135"
}
]
},
{
"events": [
{
"introduced": "5.5"
},
{
"fixed": "5.10.53"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.13.5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.14-rc1"
}
]
}
]