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CVE-2023-53358— ksmbd: fix racy issue under cocurrent smb2 tree disconnect

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，该漏洞源于并发smb2树断开时存在释放后重用问题。

CVSS 8.8 · High EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf< b36295c17fb97424406f0c3ab321b1ccaabb9be8 affected
0626e6641f6b467447c81dd7678a69c66f7746cf< bd80d35725a0cf4df9307bfe2f1a3b2cb983d8e6 affected
0626e6641f6b467447c81dd7678a69c66f7746cf< dc1c17716c099c90948ebb83e2170dd75a3be6b6 affected
0626e6641f6b467447c81dd7678a69c66f7746cf< 39366b47a59d46af15ac57beb0996268bf911f6a affected
0626e6641f6b467447c81dd7678a69c66f7746cf< 30210947a343b6b3ca13adc9bfc88e1543e16dd5 affected
5.15 affected
< 5.15 unaffected
5.15.145≤ 5.15.* unaffected
… +4 more rows
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I. Basic Information for CVE-2023-53358

Vulnerability Information
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Vulnerability Title
ksmbd: fix racy issue under cocurrent smb2 tree disconnect
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix racy issue under cocurrent smb2 tree disconnect There is UAF issue under cocurrent smb2 tree disconnect. This patch introduce TREE_CONN_EXPIRE flags for tcon to avoid cocurrent access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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，该漏洞源于并发smb2树断开时存在释放后重用问题。
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 0626e6641f6b467447c81dd7678a69c66f7746cf ~ b36295c17fb97424406f0c3ab321b1ccaabb9be8 -
Linux Linux 5.15 -

II. Public POCs for CVE-2023-53358

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III. Intelligence Information for CVE-2023-53358

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Same Patch Batch · Linux · 2025-09-17 · 56 CVEs total

CVE-2023-53338 9.8 CRITICAL lwt: Fix return values of BPF xmit ops
CVE-2022-50363 9.8 CRITICAL skmsg: pass gfp argument to alloc_sk_msg()
CVE-2023-53360 9.8 CRITICAL NFSv4.2: Rework scratch handling for READ_PLUS (again)
CVE-2022-50373 9.8 CRITICAL fs: dlm: fix race in lowcomms
CVE-2023-53354 7.8 HIGH skbuff: skb_segment, Call zero copy functions before using skbuff frags
CVE-2022-50362 7.8 HIGH dmaengine: hisilicon: Add multi-thread support for a DMA channel
CVE-2022-50367 7.8 HIGH fs: fix UAF/GPF bug in nilfs_mdt_destroy
CVE-2022-50368 7.8 HIGH drm/msm/dsi: fix memory corruption with too many bridges
CVE-2023-53340 7.8 HIGH net/mlx5: Collect command failures data only for known commands
CVE-2022-50354 7.8 HIGH drm/amdkfd: Fix kfd_process_device_init_vm error handling
CVE-2022-50355 7.8 HIGH staging: vt6655: fix some erroneous memory clean-up loops
CVE-2023-53335 7.5 HIGH RDMA/cxgb4: Fix potential null-ptr-deref in pass_establish()
CVE-2022-50365 7.5 HIGH skbuff: Account for tail adjustment during pull operations
CVE-2023-53336 media: ipu-bridge: Fix null pointer deref on SSDB/PLD parsing warnings
CVE-2022-50372 cifs: Fix memory leak when build ntlmssp negotiate blob failed
CVE-2022-50359 media: cx88: Fix a null-ptr-deref bug in buffer_prepare()
CVE-2022-50374 Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
CVE-2022-50357 usb: dwc3: core: fix some leaks in probe
CVE-2023-53337 nilfs2: do not write dirty data after degenerating to read-only
CVE-2023-53368 tracing: Fix race issue between cpu buffer write and swap

Showing top 20 of 56 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53358

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