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CVE-2023-53839— dccp: fix data-race around dp->dccps_mss_cache

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dccps_mss_cache存在数据竞争。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c< 162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1 affected
7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c< 2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817 affected
7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c< 67eebc7a9217f999b779d46fba5312a716f0dc1d affected
7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c< 6d701c95ee6463abcbb6da543060d6e444554135 affected
7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c< f239c9e1d98b313435481b4926e8bdd06197e4d8 affected
7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c< a6ddc1c774874dc704f96a99d015dc759627bba7 affected
7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c< d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384 affected
7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c< a47e598fbd8617967e49d85c49c22f9fc642704c affected
… +10 more rows
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I. Basic Information for CVE-2023-53839

Vulnerability Information
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Vulnerability Title
dccp: fix data-race around dp->dccps_mss_cache
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp->dccps_mss_cache dccp_sendmsg() reads dp->dccps_mss_cache before locking the socket. Same thing in do_dccp_getsockopt(). Add READ_ONCE()/WRITE_ONCE() annotations, and change dccp_sendmsg() to check again dccps_mss_cache after socket is locked.
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dccps_mss_cache存在数据竞争。
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 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ~ 162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1 -
Linux Linux 2.6.14 -

II. Public POCs for CVE-2023-53839

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III. Intelligence Information for CVE-2023-53839

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Same Patch Batch · Linux · 2025-12-09 · 152 CVEs total

CVE-2025-40343 9.8 CRITICAL nvmet-fc: avoid scheduling association deletion twice
CVE-2023-53794 9.8 CRITICAL cifs: fix session state check in reconnect to avoid use-after-free issue
CVE-2022-50666 9.8 CRITICAL RDMA/siw: Fix QP destroy to wait for all references dropped.
CVE-2023-53827 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}
CVE-2023-53785 8.8 HIGH mt76: mt7921: don't assume adequate headroom for SDIO headers
CVE-2023-53822 8.8 HIGH wifi: ath11k: Ignore frags from uninitialized peer in dp.
CVE-2025-40336 8.8 HIGH drm/gpusvm: fix hmm_pfn_to_map_order() usage
CVE-2025-40342 8.8 HIGH nvme-fc: use lock accessing port_state and rport state
CVE-2025-40328 8.8 HIGH smb: client: fix potential UAF in smb2_close_cached_fid()
CVE-2023-53851 8.4 HIGH drm/msm/dp: Drop aux devices together with DP controller
CVE-2025-40337 8.2 HIGH net: stmmac: Correctly handle Rx checksum offload errors
CVE-2022-50656 8.1 HIGH nfc: pn533: Clear nfc_target before being used
CVE-2023-53803 8.1 HIGH scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
CVE-2023-53804 7.8 HIGH nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode()
CVE-2023-53819 7.8 HIGH amdgpu: validate offset_in_bo of drm_amdgpu_gem_va
CVE-2023-53816 7.8 HIGH drm/amdkfd: fix potential kgd_mem UAFs
CVE-2023-53800 7.8 HIGH ubi: Fix use-after-free when volume resizing failed
CVE-2023-53790 7.8 HIGH bpf: Zeroing allocated object from slab in bpf memory allocator
CVE-2023-53795 7.8 HIGH iommufd: IOMMUFD_DESTROY should not increase the refcount
CVE-2023-53810 7.8 HIGH blk-mq: release crypto keyslot before reporting I/O complete

Showing top 20 of 152 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53839

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