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CVE-2023-54214— Bluetooth: L2CAP: Fix potential user-after-free

AI Predicted 6.5 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxa6a5568c03c4805d4d250f6bd9d468eeeb4ea059< b2fde8cb2a25125111f2144604e0e7c0ebcc4bbaaffected
a6a5568c03c4805d4d250f6bd9d468eeeb4ea059< a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49affected
a6a5568c03c4805d4d250f6bd9d468eeeb4ea059< 60aaccf16d1e099c16bebfb96428ae762cb528f7affected
a6a5568c03c4805d4d250f6bd9d468eeeb4ea059< b8ed41cc04fb74005aa51d17865ca3d022760335affected
a6a5568c03c4805d4d250f6bd9d468eeeb4ea059< 31a288a4df7f6a28e65da22a4ab2add4a963738eaffected
a6a5568c03c4805d4d250f6bd9d468eeeb4ea059< 64e28ecf44e46de9f01915a4146706a21c3469d2affected
a6a5568c03c4805d4d250f6bd9d468eeeb4ea059< 994e3e18908f5c4a12d07b44018e6aa85f071048affected
a6a5568c03c4805d4d250f6bd9d468eeeb4ea059< df5703348813235874d851934e957c3723d71644affected
… +10 more rows
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I. Basic Information for CVE-2023-54214

Vulnerability Information
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Vulnerability Title
Bluetooth: L2CAP: Fix potential user-after-free
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix potential user-after-free This fixes all instances of which requires to allocate a buffer calling alloc_skb which may release the chan lock and reacquire later which makes it possible that the chan is disconnected in the meantime.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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Bluetooth L2CAP存在释放后重用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ~ b2fde8cb2a25125111f2144604e0e7c0ebcc4bba -
LinuxLinux 3.5 -

II. Public POCs for CVE-2023-54214

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III. Intelligence Information for CVE-2023-54214

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Other References for CVE-2023-54214 (8)

Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-54265ipv6: Fix an uninit variable access bug in __ip6_make_skb()
CVE-2023-54249bus: mhi: ep: Only send -ENOTCONN status if client driver is available
CVE-2023-54251net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX.
CVE-2023-54253btrfs: set page extent mapped after read_folio in relocate_one_page
CVE-2023-54252platform/x86: think-lmi: Fix memory leaks when parsing ThinkStation WMI strings
CVE-2023-54254drm/ttm: Don't leak a resource on eviction error
CVE-2023-54255sh: dma: Fix DMA channel offset calculation
CVE-2023-54257net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54258cifs: fix potential oops in cifs_oplock_break
CVE-2023-54259soundwire: bus: Fix unbalanced pm_runtime_put() causing usage count underflow
CVE-2023-54260cifs: Fix lost destroy smbd connection when MR allocate failed
CVE-2023-54261drm/amdkfd: Add missing gfx11 MQD manager callbacks
CVE-2023-54262net/mlx5e: Don't clone flow post action attributes second time
CVE-2023-54263drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP
CVE-2023-54264fs/sysv: Null check to prevent null-ptr-deref bug
CVE-2023-54266media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer()
CVE-2023-54275wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup
CVE-2023-54276nfsd: move init of percpu reply_cache_stats counters back to nfsd_init_net
CVE-2023-54278s390/vmem: split pages when debug pagealloc is enabled
CVE-2023-54274RDMA/srpt: Add a check for valid 'mad_agent' pointer

Showing top 20 of 244 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54214

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