CVE-2023-53458— media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
Possible ATT&CK Techniques 2AI
T1203 · Exploitation for Client Execution T1059 · Command and Scripting InterpreterAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 4d63a25c4523b5d18e5307897d56aff785f43bf5< f0a06203f2fe63f04311467200c99c4ee1926578 | affected |
4d63a25c4523b5d18e5307897d56aff785f43bf5< 6738841f6fcf23e9fc30e2449f32fc84ee19c6f1 | affected | ||
4d63a25c4523b5d18e5307897d56aff785f43bf5< 5b8e5e28e85a546dfccc3895befe0e823fdd7c89 | affected | ||
4d63a25c4523b5d18e5307897d56aff785f43bf5< 47e8b73bc35d7c54642f78e498697692f6358996 | affected | ||
3.18 | affected | ||
< 3.18 | unaffected | ||
5.15.113≤ 5.15.* | unaffected | ||
6.1.30≤ 6.1.* | unaffected | ||
| … +2 more rows | |||
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2023-53458
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未检查cx23885_risc_buffer返回值和risc-cpu值，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-53458
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2023-53458
请登录查看更多情报信息。
Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total
| CVE-2025-39919 | 8.8 HIGH | wifi: mt76: mt7996: add missing check for rx wcid entries |
| CVE-2025-39918 | 8.8 HIGH | wifi: mt76: fix linked list corruption |
| CVE-2025-39896 | 7.8 HIGH | accel/ivpu: Prevent recovery work from being queued during device removal |
| CVE-2025-39924 | 7.8 HIGH | erofs: fix invalid algorithm for encoded extents |
| CVE-2025-39927 | 7.8 HIGH | ceph: fix race condition validating r_parent before applying state |
| CVE-2025-39906 | 7.8 HIGH | drm/amd/display: remove oem i2c adapter on finish |
| CVE-2025-39908 | 7.8 HIGH | net: dev_ioctl: take ops lock in hwtstamp lower paths |
| CVE-2025-39894 | 7.5 HIGH | netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm |
| CVE-2025-39897 | 7.5 HIGH | net: xilinx: axienet: Add error handling for RX metadata pointer retrieval |
| CVE-2025-39902 | 7.1 HIGH | mm/slub: avoid accessing metadata when pointer is invalid in object_err() |
| CVE-2025-39928 | 7.1 HIGH | i2c: rtl9300: ensure data length is within supported range |
| CVE-2022-50465 | ext4: fix leaking uninitialized memory in fast-commit journal | |
| CVE-2022-50456 | btrfs: fix resolving backrefs for inline extent followed by prealloc | |
| CVE-2022-50458 | clk: tegra: Fix refcount leak in tegra210_clock_init | |
| CVE-2022-50460 | cifs: Fix xid leak in cifs_flock() | |
| CVE-2022-50459 | scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername() | |
| CVE-2022-50461 | net: ethernet: ti: am65-cpsw: Fix PM runtime leakage in am65_cpsw_nuss_ndo_slave_open() | |
| CVE-2022-50462 | MIPS: vpe-mt: fix possible memory leak while module exiting | |
| CVE-2023-53490 | mptcp: fix disconnect vs accept race | |
| CVE-2023-53489 | tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. |
Showing top 20 of 169 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2022-4994
KVM: x86: wean fast IN from emulator_pio_in - CVE-2026-64560
posix-cpu-timers: Prevent UAF caused by non-leader exec() ra - CVE-2026-64559
s390/pkey: Check length in PKEY_VERIFYPROTK ioctl - CVE-2026-64558
s390/pkey: Check length in pkey_pckmo handler implementation - CVE-2026-64556
perf/core: Detach event groups during remove_on_exec
Same vendor: Linux
- CVE-2022-4994
KVM: x86: wean fast IN from emulator_pio_in - CVE-2026-64560
posix-cpu-timers: Prevent UAF caused by non-leader exec() ra - CVE-2026-64559
s390/pkey: Check length in PKEY_VERIFYPROTK ioctl - CVE-2026-64558
s390/pkey: Check length in pkey_pckmo handler implementation - CVE-2026-64556
perf/core: Detach event groups during remove_on_exec
V. Comments for CVE-2023-53458
No comments yet