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CVE-2023-53304— netfilter: nft_set_rbtree: fix overlap expiration walk

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nft_set_rbtree中的重叠过期遍历问题，可能导致内存泄漏和不正确的元素移除。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 17

VendorProduct Version RangeStatus
Linux Linux 7ab87a326f20c52ff4d9972052d085be951c704b< 8284a79136c384059e85e278da2210b809730287 affected
181859bdfb9734aca449512fccaee4cacce64aed< acaee227cf79c45a5d2d49c3e9a66333a462802c affected
4aacf3d78424293e318c616016865380b37b9cc5< 893cb3c3513cf661a0ff45fe0cfa83fe27131f76 affected
2bf1435fa19d2c58054391b3bba40d5510a5758c< 50cbb9d195c197af671869c8cadce3bd483735a0 affected
318cb24a4c3fce8140afaf84e4d45fcb76fb280b< 89a4d1a89751a0fbd520e64091873e19cc0979e8 affected
c9e6978e2725a7d4b6cd23b2facd3f11422c0643< cd66733932399475fe933cb3ec03e687ed401462 affected
c9e6978e2725a7d4b6cd23b2facd3f11422c0643< f718863aca469a109895cb855e6b81fff4827d71 affected
5.10.166< 5.10.190 affected
… +9 more rows
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I. Basic Information for CVE-2023-53304

Vulnerability Information
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Vulnerability Title
netfilter: nft_set_rbtree: fix overlap expiration walk
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_rbtree: fix overlap expiration walk The lazy gc on insert that should remove timed-out entries fails to release the other half of the interval, if any. Can be reproduced with tests/shell/testcases/sets/0044interval_overlap_0 in nftables.git and kmemleak enabled kernel. Second bug is the use of rbe_prev vs. prev pointer. If rbe_prev() returns NULL after at least one iteration, rbe_prev points to element that is not an end interval, hence it should not be removed. Lastly, check the genmask of the end interval if this is active in the current generation.
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nft_set_rbtree中的重叠过期遍历问题，可能导致内存泄漏和不正确的元素移除。
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 7ab87a326f20c52ff4d9972052d085be951c704b ~ 8284a79136c384059e85e278da2210b809730287 -
Linux Linux 6.2 -

II. Public POCs for CVE-2023-53304

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III. Intelligence Information for CVE-2023-53304

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Same Patch Batch · Linux · 2025-09-16 · 115 CVEs total

CVE-2022-50350 9.8 CRITICAL scsi: target: iscsi: Fix a race condition between login_work and the login thread
CVE-2023-53315 8.8 HIGH wifi: ath11k: Fix SKB corruption in REO destination ring
CVE-2025-39806 8.8 HIGH HID: multitouch: fix slab out-of-bounds access in mt_report_fixup()
CVE-2025-39827 8.8 HIGH net: rose: include node references in rose_neigh refcount
CVE-2025-39826 8.8 HIGH net: rose: convert 'use' field to refcount_t
CVE-2023-53297 8.8 HIGH Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
CVE-2023-53305 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free
CVE-2023-53322 8.8 HIGH scsi: qla2xxx: Wait for io return on terminate rport
CVE-2025-39809 8.4 HIGH HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length
CVE-2023-53333 8.2 HIGH netfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one
CVE-2025-39815 7.8 HIGH RISC-V: KVM: fix stack overrun when loading vlenb
CVE-2023-53314 7.8 HIGH fbdev/ep93xx-fb: Do not assign to struct fb_info.dev
CVE-2023-53286 7.8 HIGH RDMA/mlx5: Return the firmware result upon destroying QP/RQ
CVE-2025-39818 7.8 HIGH HID: intel-thc-hid: intel-thc: Fix incorrect pointer arithmetic in I2C regs save
CVE-2022-50341 7.8 HIGH cifs: fix oops during encryption
CVE-2022-50339 7.8 HIGH Bluetooth: avoid hci_dev_test_and_set_flag() in mgmt_init_hdev()
CVE-2023-53331 7.8 HIGH pstore/ram: Check start of empty przs during init
CVE-2025-39825 7.8 HIGH smb: client: fix race with concurrent opens in rename(2)
CVE-2023-53311 7.8 HIGH nilfs2: fix use-after-free of nilfs_root in dirtying inodes via iput
CVE-2025-39810 7.8 HIGH bnxt_en: Fix memory corruption when FW resources change during ifdown

Showing top 20 of 115 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53304

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