CVE-2023-53458
published 2025-10-01CVE-2023-53458: In the Linux kernel, the following vulnerability has been resolved: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish() When the…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.15%
4.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
When the driver calls cx23885_risc_buffer() to prepare the buffer, the
function call dma_alloc_coherent may fail, resulting in a empty buffer
risc->cpu. Later when we free the buffer or access the buffer, null ptr
deref is triggered.
This bug is similar to the following one:
https://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71.
We believe the bug can be also dynamically triggered from user side.
Similarly, we fix this by checking the return value of cx23885_risc_buffer()
and the value of risc->cpu before buffer free.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.37-1 (bookworm) | linux 6.1.37-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 4d63a25c4523b5d18e5307897d56aff785f43bf5 < f0a06203f2fe63f04311467200c99c4ee1926578 | f0a06203f2fe63f04311467200c99c4ee1926578 |
| linux | linux | >= 4d63a25c4523b5d18e5307897d56aff785f43bf5 < 6738841f6fcf23e9fc30e2449f32fc84ee19c6f1 | 6738841f6fcf23e9fc30e2449f32fc84ee19c6f1 |
| linux | linux | >= 4d63a25c4523b5d18e5307897d56aff785f43bf5 < 5b8e5e28e85a546dfccc3895befe0e823fdd7c89 | 5b8e5e28e85a546dfccc3895befe0e823fdd7c89 |
| linux | linux | >= 4d63a25c4523b5d18e5307897d56aff785f43bf5 < 47e8b73bc35d7c54642f78e498697692f6358996 | 47e8b73bc35d7c54642f78e498697692f6358996 |
| linux | linux_kernel | >= 0 < 6.1.37-1 | 6.1.37-1 |
| linux | linux_kernel | >= 0 < 6.3.7-1 | 6.3.7-1 |
| linux | linux_kernel | >= 0 < 6.3.7-1 | 6.3.7-1 |
| linux | linux_kernel | >= 3.18 < 5.15.113 | 5.15.113 |
| linux | linux_kernel | >= 5.16 < 6.1.30 | 6.1.30 |
| linux | linux_kernel | >= 6.2 < 6.3.4 | 6.3.4 |
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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Red Hat
kernel: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
vendor_redhat·2025-10-01·CVSS 5.5
CVE-2023-53458 [MEDIUM] CWE-476 kernel: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
kernel: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
In the Linux kernel, the following vulnerability has been resolved:
media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
When the driver calls cx23885_risc_buffer() to prepare the buffer, the
function call dma_alloc_coherent may fail, resulting in a empty buffer
risc->cpu. Later when we free the buffer or access the buffer, null ptr
deref is triggered.
This bug is similar to the following one:
https://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71.
We believe the bug can be also dynamically triggered from user side.
Similarly, we fix this by checking the return value of cx23885_risc_buffer()
and the value of risc->cpu before buffer free.
Debian
CVE-2023-53458: linux - In the Linux kernel, the following vulnerability has been resolved: media: cx23...
vendor_debian·2023·CVSS 5.5
CVE-2023-53458 [MEDIUM] CVE-2023-53458: linux - In the Linux kernel, the following vulnerability has been resolved: media: cx23...
In the Linux kernel, the following vulnerability has been resolved: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish() When the driver calls cx23885_risc_buffer() to prepare the buffer, the function call dma_alloc_coherent may fail, resulting in a empty buffer risc->cpu. Later when we free the buffer or access the buffer, null ptr deref is triggered. This bug is similar to the following one: https://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71. We believe the bug can be also dynamically triggered from user side. Similarly, we fix this by checking the return value of cx23885_risc_buffer() and the value of risc->cpu before buffer free.
Scope: local
bookworm: resolved (fixed in 6.1.37-1)
bullseye: open
forky: resolved (fixed
GHSA
GHSA-j4qg-w554-c3hr: In the Linux kernel, the following vulnerability has been resolved:
media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
ghsa_unreviewed·2025-10-01
CVE-2023-53458 [MEDIUM] CWE-476 GHSA-j4qg-w554-c3hr: In the Linux kernel, the following vulnerability has been resolved:
media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
In the Linux kernel, the following vulnerability has been resolved:
media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
When the driver calls cx23885_risc_buffer() to prepare the buffer, the
function call dma_alloc_coherent may fail, resulting in a empty buffer
risc->cpu. Later when we free the buffer or access the buffer, null ptr
deref is triggered.
This bug is similar to the following one:
https://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71.
We believe the bug can be also dynamically triggered from user side.
Similarly, we fix this by checking the return value of cx23885_risc_buffer()
and the value of risc->cpu before buffer free.
OSV
CVE-2023-53458: In the Linux kernel, the following vulnerability has been resolved: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish() W
osv·2025-10-01·CVSS 5.5
CVE-2023-53458 [MEDIUM] CVE-2023-53458: In the Linux kernel, the following vulnerability has been resolved: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish() W
In the Linux kernel, the following vulnerability has been resolved: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish() When the driver calls cx23885_risc_buffer() to prepare the buffer, the function call dma_alloc_coherent may fail, resulting in a empty buffer risc->cpu. Later when we free the buffer or access the buffer, null ptr deref is triggered. This bug is similar to the following one: https://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71. We believe the bug can be also dynamically triggered from user side. Similarly, we fix this by checking the return value of cx23885_risc_buffer() and the value of risc->cpu before buffer free.
No detection rules found.
No public exploits indexed.
2025-10-01
Published