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CVE-2023-53990— SMB3: Add missing locks to protect deferred close file list

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，该漏洞源于修改延迟关闭文件列表时缺少锁保护，可能导致数据竞争。

CVSS 7.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 15

VendorProduct Version RangeStatus
Linux Linux 860efae127888ae535bc4eda1b7f27642727c69e< 0f87e18203bd30f71eb1a65259e28e291b6cc43a affected
ca08d0eac020d48a3141dbec0a3cf64fbdb17cde< 3aa9d065b0685b4e6052f3f2a2462966fdc44fd2 affected
ca08d0eac020d48a3141dbec0a3cf64fbdb17cde< cb36365dac25d546ca4af0eb22acb43c9b4ddfdf affected
ca08d0eac020d48a3141dbec0a3cf64fbdb17cde< 32a046ccaeea6c19965c04a4c521e703f6607924 affected
ca08d0eac020d48a3141dbec0a3cf64fbdb17cde< ab9ddc87a9055c4bebd6524d5d761d605d52e557 affected
60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5 affected
5.15.63< 5.15.111 affected
5.19.4< 5.20 affected
… +7 more rows
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I. Basic Information for CVE-2023-53990

Vulnerability Information
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Vulnerability Title
SMB3: Add missing locks to protect deferred close file list
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: SMB3: Add missing locks to protect deferred close file list cifs_del_deferred_close function has a critical section which modifies the deferred close file list. We must acquire deferred_lock before calling cifs_del_deferred_close function.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/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，该漏洞源于修改延迟关闭文件列表时缺少锁保护，可能导致数据竞争。
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 860efae127888ae535bc4eda1b7f27642727c69e ~ 0f87e18203bd30f71eb1a65259e28e291b6cc43a -
Linux Linux 6.0 -

II. Public POCs for CVE-2023-53990

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III. Intelligence Information for CVE-2023-53990

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Other References for CVE-2023-53990 (2)

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

CVE-2023-54076 9.8 CRITICAL smb: client: fix missed ses refcounting
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-2023-54090 9.8 CRITICAL ixgbe: Fix panic during XDP_TX with > 64 CPUs
CVE-2023-54094 9.8 CRITICAL net: prevent skb corruption on frag list segmentation
CVE-2023-53867 9.8 CRITICAL ceph: fix potential use-after-free bug when trimming caps
CVE-2025-68359 9.8 CRITICAL btrfs: fix double free of qgroup record after failure to add delayed ref head
CVE-2025-68726 9.8 CRITICAL crypto: aead - Fix reqsize handling
CVE-2023-53996 9.3 CRITICAL x86/sev: Make enc_dec_hypercall() accept a size instead of npages
CVE-2023-54071 8.8 HIGH wifi: rtw88: use work to update rate to avoid RCU warning
CVE-2023-54060 8.8 HIGH iommufd: Set end correctly when doing batch carry
CVE-2023-54043 8.8 HIGH iommufd: Do not add the same hwpt to the ioas->hwpt_list twice
CVE-2022-50732 8.8 HIGH staging: rtl8192u: Fix use after free in ieee80211_rx()
CVE-2025-68736 8.8 HIGH landlock: Fix handling of disconnected directories
CVE-2023-54040 8.8 HIGH ice: fix wrong fallback logic for FDIR
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-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-2023-53990

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