CVE-2021-47305
published 2024-05-21CVE-2021-47305: 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…
PriorityP416medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
15.0th percentile
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.
Affected
18 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.14.6-1 (bookworm) | linux 5.14.6-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= a02b9dc90d844cc7df7b63264e7920cc425052d9 < 19f51c2529339280d2c8c6427cd3e21ddf1ac3f8 | 19f51c2529339280d2c8c6427cd3e21ddf1ac3f8 |
| linux | linux | >= a02b9dc90d844cc7df7b63264e7920cc425052d9 < e0355a0ad31a1d677b2a4514206de4902bd550e8 | e0355a0ad31a1d677b2a4514206de4902bd550e8 |
| linux | linux | >= a02b9dc90d844cc7df7b63264e7920cc425052d9 < 41f45e91c92c8480242ea448d54e28c753b13902 | 41f45e91c92c8480242ea448d54e28c753b13902 |
| linux | linux | >= a02b9dc90d844cc7df7b63264e7920cc425052d9 < 0d514185ae792d3a1903c8e1a83899aa996705ce | 0d514185ae792d3a1903c8e1a83899aa996705ce |
| linux | linux | >= a02b9dc90d844cc7df7b63264e7920cc425052d9 < 19edcd97727aae9362444a859a24d99a8730cb27 | 19edcd97727aae9362444a859a24d99a8730cb27 |
| linux | linux | >= a02b9dc90d844cc7df7b63264e7920cc425052d9 < ffe000217c5068c5da07ccb1c0f8cce7ad767435 | ffe000217c5068c5da07ccb1c0f8cce7ad767435 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.70-1 | 5.10.70-1 |
| linux | linux_kernel | >= 0 < 5.14.6-1 | 5.14.6-1 |
| linux | linux_kernel | >= 0 < 5.14.6-1 | 5.14.6-1 |
| linux | linux_kernel | >= 0 < 5.14.6-1 | 5.14.6-1 |
| linux | linux_kernel | >= 4.15 < 4.19.199 | 4.19.199 |
| linux | linux_kernel | >= 4.20 < 5.4.135 | 5.4.135 |
| linux | linux_kernel | >= 4.9 < 4.14.241 | 4.14.241 |
| linux | linux_kernel | >= 5.11 < 5.13.5 | 5.13.5 |
| linux | linux_kernel | >= 5.5 < 5.10.53 | 5.10.53 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-fw4j-88v3-6hfw: 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
ghsa_unreviewed·2024-05-21
CVE-2021-47305 [MEDIUM] CWE-617 GHSA-fw4j-88v3-6hfw: 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
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.
OSV
CVE-2021-47305: 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
osv·2024-05-21·CVSS 5.5
CVE-2021-47305 [MEDIUM] CVE-2021-47305: 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
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.
Red Hat
kernel: dma-buf/sync_file: Don't leak fences on merge failure
vendor_redhat·2024-05-21·CVSS 5.5
CVE-2021-47305 [MEDIUM] CWE-402 kernel: dma-buf/sync_file: Don't leak fences on merge failure
kernel: 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.
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Out of support scope
Package: kernel-rt (Red Hat Enterprise Linux 7) - Out of support scope
Package: kernel (Red Hat Enterprise Linux 8
Debian
CVE-2021-47305: linux - In the Linux kernel, the following vulnerability has been resolved: dma-buf/syn...
vendor_debian·2021·CVSS 5.5
CVE-2021-47305 [MEDIUM] CVE-2021-47305: linux - In the Linux kernel, the following vulnerability has been resolved: dma-buf/syn...
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.
Scope: local
bookworm: resolved (fixed in 5.14.6-1)
bullseye: resolved (fixed in 5.10.70-1)
forky: resolved (fixed in 5.14.6-1)
sid: resolved (fixed in 5.14.6-1)
trixie: resolved (fixed in 5.14.6-1)
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705cehttps://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705cehttps://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435
2024-05-21
Published