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CVE-2023-54066— media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于未检查消息长度，可能导致空指针取消引用。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 1ea76d16569b7fc242b860c7e19549be028b13d1< 578b67614ae0e4fba3945b66a4c8f9ae77115bcb affected
1ea76d16569b7fc242b860c7e19549be028b13d1< 2a33fc57133d6f39d62285df6706aeb1714967f1 affected
1ea76d16569b7fc242b860c7e19549be028b13d1< dfcd3c010209927b9f45b860f046635dc32e32e1 affected
1ea76d16569b7fc242b860c7e19549be028b13d1< 72af676551efe820e309a6c7681c2c4372f37376 affected
1ea76d16569b7fc242b860c7e19549be028b13d1< b97719a66970601cd3151a3e2020f4454a1c4ff6 affected
5.5 affected
< 5.5 unaffected
5.10.197≤ 5.10.* unaffected
… +4 more rows
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I. Basic Information for CVE-2023-54066

Vulnerability Information
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Vulnerability Title
media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer In gl861_i2c_master_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach gl861_i2c_master_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
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，该漏洞源于未检查消息长度，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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1ea76d16569b7fc242b860c7e19549be028b13d1 ~ 578b67614ae0e4fba3945b66a4c8f9ae77115bcb -
Linux Linux 5.5 -

II. Public POCs for CVE-2023-54066

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III. Intelligence Information for CVE-2023-54066

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Other References for CVE-2023-54066 (2)

Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

CVE-2025-68726 9.8 CRITICAL crypto: aead - Fix reqsize handling
CVE-2022-50717 9.8 CRITICAL nvmet-tcp: add bounds check on Transfer Tag
CVE-2025-68745 9.8 CRITICAL scsi: qla2xxx: Clear cmds after chip reset
CVE-2025-68741 9.8 CRITICAL scsi: qla2xxx: Fix improper freeing of purex item
CVE-2023-53867 9.8 CRITICAL ceph: fix potential use-after-free bug when trimming caps
CVE-2023-54090 9.8 CRITICAL ixgbe: Fix panic during XDP_TX with > 64 CPUs
CVE-2023-54076 9.8 CRITICAL smb: client: fix missed ses refcounting
CVE-2025-68359 9.8 CRITICAL btrfs: fix double free of qgroup record after failure to add delayed ref head
CVE-2023-54094 9.8 CRITICAL net: prevent skb corruption on frag list segmentation
CVE-2023-53996 9.3 CRITICAL x86/sev: Make enc_dec_hypercall() accept a size instead of npages
CVE-2023-54040 8.8 HIGH ice: fix wrong fallback logic for FDIR
CVE-2023-54060 8.8 HIGH iommufd: Set end correctly when doing batch carry
CVE-2022-50732 8.8 HIGH staging: rtl8192u: Fix use after free in ieee80211_rx()
CVE-2023-54043 8.8 HIGH iommufd: Do not add the same hwpt to the ioas->hwpt_list twice
CVE-2023-54092 8.8 HIGH KVM: s390: pv: fix index value of replaced ASCE
CVE-2023-54120 8.8 HIGH Bluetooth: Fix race condition in hidp_session_thread
CVE-2025-68736 8.8 HIGH landlock: Fix handling of disconnected directories
CVE-2023-54071 8.8 HIGH wifi: rtw88: use work to update rate to avoid RCU warning
CVE-2023-53986 8.6 HIGH mips: bmips: BCM6358: disable RAC flush for TP1
CVE-2022-50746 8.4 HIGH erofs: validate the extent length for uncompressed pclusters

Showing top 20 of 322 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54066

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