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CVE-2023-54197— Revert "Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work"

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btsdio_remove函数存在释放后重用。

AI Predicted 3.3 Difficulty: Easy EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 27

VendorProduct Version RangeStatus
Linux Linux 95eacef5692545f199fae4e52abfbfa273acb351< 3b4ed52009723f7dfca7a8ca95163bfb441bfb76 affected
af4d48754d5517d33bac5e504ff1f1de0808e29e< 70a104588e3131415e559c06deb834ce259a285a affected
a18fb433ceb56e0787546a9d77056dd0f215e762< de0ffb5145c9f418ad76f00e58d4b91c680410b2 affected
da3d3fdfb4d523c5da30e35a8dd90e04f0fd8962< 0837d10f6c37a47a0c73bccf1e39513613a2fcc2 affected
8efae2112d910d8e5166dd0a836791b08721eef1< a789192f366147a0fbb395650079906d1d04e0b9 affected
cbf8deacb7053ce3e3fed64b277c6c6989e65bba< 952030c914b5f2288609efe868537afcff7a3f51 affected
c59c65a14e8f7d738429648833f3bb3f9df0513f< 8f83fa62614c282dd5d1211a0dd99c6a0a515b81 affected
1e9ac114c4428fdb7ff4635b45d4f46017e8916f< d8d7ce037d9a8f1f0714ece268c4c2c50845bbc3 affected
… +19 more rows
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I. Basic Information for CVE-2023-54197

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
Revert "Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work"
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Revert "Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work" This reverts commit 1e9ac114c4428fdb7ff4635b45d4f46017e8916f. This patch introduces a possible null-ptr-def problem. Revert it. And the fixed bug by this patch have resolved by commit 73f7b171b7c0 ("Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition").
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btsdio_remove函数存在释放后重用。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 95eacef5692545f199fae4e52abfbfa273acb351 ~ 3b4ed52009723f7dfca7a8ca95163bfb441bfb76 -
Linux Linux 6.3 -

II. Public POCs for CVE-2023-54197

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III. Intelligence Information for CVE-2023-54197

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Other References for CVE-2023-54197 (9)

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

CVE-2023-54184 9.8 CRITICAL scsi: target: iscsit: Free cmds before session free
CVE-2023-54223 9.8 CRITICAL net/mlx5e: xsk: Fix invalid buffer access for legacy rq
CVE-2023-54237 9.8 CRITICAL net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-54257 9.8 CRITICAL net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
CVE-2023-54269 9.8 CRITICAL SUNRPC: double free xprt_ctxt while still in use
CVE-2023-54280 9.8 CRITICAL cifs: fix potential race when tree connecting ipc
CVE-2023-54292 9.8 CRITICAL RDMA/irdma: Fix data race on CQP request done
CVE-2023-54203 9.1 CRITICAL ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2022-50880 8.8 HIGH wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-54262 8.8 HIGH net/mlx5e: Don't clone flow post action attributes second time
CVE-2023-54214 8.8 HIGH Bluetooth: L2CAP: Fix potential user-after-free
CVE-2023-54162 8.8 HIGH ksmbd: fix possible memory leak in smb2_lock()
CVE-2023-54318 8.8 HIGH net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
CVE-2023-54250 8.2 HIGH ksmbd: avoid out of bounds access in decode_preauth_ctxt()
CVE-2023-54164 8.0 HIGH Bluetooth: ISO: fix iso_conn related locking and validity issues
CVE-2023-54206 7.8 HIGH net/sched: flower: fix filter idr initialization
CVE-2023-54202 7.8 HIGH drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-54210 7.8 HIGH Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
CVE-2023-54243 7.8 HIGH netfilter: ebtables: fix table blob use-after-free

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-2023-54197

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