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CVE-2023-53032— netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function.

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bitmap_ip_create存在整数溢出。

AI Predicted 4.4 Difficulty: Theoretical EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux b9fed748185a96b7cfe74afac4bd228e8af16f01< e137d9bb26bd85ce07323a38e38ceb0b160db841 affected
b9fed748185a96b7cfe74afac4bd228e8af16f01< dfd834ccc1b88bbbab81b9046a3a539dd0c2d14f affected
b9fed748185a96b7cfe74afac4bd228e8af16f01< feefb33eefa166fc3e0fd17547b0bc0cb3baced9 affected
b9fed748185a96b7cfe74afac4bd228e8af16f01< 4e6a70fd840400e3a2e784a6673968a3eb2431c0 affected
b9fed748185a96b7cfe74afac4bd228e8af16f01< 511cf17b2447fc41cfef8d71936e1fa53e395c1e affected
b9fed748185a96b7cfe74afac4bd228e8af16f01< e88865876d47c790be0d5e23973499d75d034364 affected
b9fed748185a96b7cfe74afac4bd228e8af16f01< 9ea4b476cea1b7d461d16dda25ca3c7e616e2d15 affected
3.7 affected
… +8 more rows
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I. Basic Information for CVE-2023-53032

Vulnerability Information
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Vulnerability Title
netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function.
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. When first_ip is 0, last_ip is 0xFFFFFFFF, and netmask is 31, the value of an arithmetic expression 2 << (netmask - mask_bits - 1) is subject to overflow due to a failure casting operands to a larger data type before performing the arithmetic. Note that it's harmless since the value will be checked at the next step. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.
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bitmap_ip_create存在整数溢出。
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 b9fed748185a96b7cfe74afac4bd228e8af16f01 ~ e137d9bb26bd85ce07323a38e38ceb0b160db841 -
Linux Linux 3.7 -

II. Public POCs for CVE-2023-53032

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III. Intelligence Information for CVE-2023-53032

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Patches & Fixes for CVE-2023-53032 (1)

Same Patch Batch · Linux · 2025-03-27 · 124 CVEs total

CVE-2023-53006 9.8 CRITICAL cifs: Fix oops due to uncleared server->smbd_conn in reconnect
CVE-2025-21876 8.8 HIGH iommu/vt-d: Fix suspicious RCU usage
CVE-2025-21890 8.2 HIGH idpf: fix checksums set in idpf_rx_rsc()
CVE-2023-52983 7.8 HIGH block, bfq: fix uaf for bfqq in bic_set_bfqq()
CVE-2023-52930 7.8 HIGH drm/i915: Fix potential bit_17 double-free
CVE-2023-52931 7.8 HIGH drm/i915: Avoid potential vm use-after-free
CVE-2023-52934 7.8 HIGH mm/MADV_COLLAPSE: catch !none !huge !bad pmd lookups
CVE-2023-52935 7.8 HIGH mm/khugepaged: fix ->anon_vma race
CVE-2025-21867 7.8 HIGH bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()
CVE-2022-49760 7.8 HIGH mm/hugetlb: fix PTE marker handling in hugetlb_change_protection()
CVE-2023-52973 7.8 HIGH vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF
CVE-2023-52974 7.8 HIGH scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress
CVE-2023-52975 7.8 HIGH scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress
CVE-2023-53009 7.8 HIGH drm/amdkfd: Add sync after creating vram bo
CVE-2023-53033 7.8 HIGH netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits
CVE-2023-53028 7.8 HIGH Revert "wifi: mac80211: fix memory leak in ieee80211_if_add()"
CVE-2023-53026 7.8 HIGH RDMA/core: Fix ib block iterator counter overflow
CVE-2023-53023 7.8 HIGH net: nfc: Fix use-after-free in local_cleanup()
CVE-2023-53021 7.8 HIGH net/sched: sch_taprio: fix possible use-after-free
CVE-2023-52988 7.8 HIGH ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path()

Showing top 20 of 124 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux