CVE-2023-53458
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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.
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) |
|---|---|---|---|---|---|
| 4d63a25c4523b5d18e5307897d56aff785f43bf5 | affected | git | f0a06203f2fe63f04311467200c99c4ee1926578 | Unavailable | None listed |
| 4d63a25c4523b5d18e5307897d56aff785f43bf5 | affected | git | 6738841f6fcf23e9fc30e2449f32fc84ee19c6f1 | Unavailable | None listed |
| 4d63a25c4523b5d18e5307897d56aff785f43bf5 | affected | git | 5b8e5e28e85a546dfccc3895befe0e823fdd7c89 | Unavailable | None listed |
| 4d63a25c4523b5d18e5307897d56aff785f43bf5 | affected | git | 47e8b73bc35d7c54642f78e498697692f6358996 | 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) |
|---|---|---|---|---|---|
| 3.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.18 | Unavailable | None listed |
| 5.15.113 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.30 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.3.4 | unaffected | semver | Unavailable | 6.3.* | None listed |
| 6.4 | unaffected | original_commit_for_fix | Unavailable | * | None listed |