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CVE-2026-53001— netfilter: xtables: restrict several matches to inet family

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基金会开源的操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于netfilter xtables扩展中xt_mac、xt_owner、xt_physdev和xt_realm匹配未限制为inet协议族，可能导致在错误协议族下使用。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.13% · P2

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux ab4f21e6fb1c09b13c4c3cb8357babe8223471bd< 14203f9edf944b3fb63faadd62f38452421ecdfc affected
ab4f21e6fb1c09b13c4c3cb8357babe8223471bd< 7eaf9c740f33230cb224dc265f3c69f8531ff57b affected
ab4f21e6fb1c09b13c4c3cb8357babe8223471bd< 9a109751b297b0f2135495749ef5a18ba31ec7d4 affected
ab4f21e6fb1c09b13c4c3cb8357babe8223471bd< cbeb259f31382de70a70a59ffd0e66f5e80d9818 affected
ab4f21e6fb1c09b13c4c3cb8357babe8223471bd< 689a91ff18d6448d94c1ab7c076fecdb2b668bef affected
ab4f21e6fb1c09b13c4c3cb8357babe8223471bd< 76160e04440c9698b989dbd9492a7ec4f520c9ee affected
ab4f21e6fb1c09b13c4c3cb8357babe8223471bd< fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9 affected
ab4f21e6fb1c09b13c4c3cb8357babe8223471bd< b6fe26f86a1649f84e057f3f15605b08eda15497 affected
… +10 more rows
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I. Basic Information for CVE-2026-53001

Vulnerability Information
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Vulnerability Title
netfilter: xtables: restrict several matches to inet family
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: xtables: restrict several matches to inet family This is a partial revert of: commit ab4f21e6fb1c ("netfilter: xtables: use NFPROTO_UNSPEC in more extensions") to allow ipv4 and ipv6 only. - xt_mac - xt_owner - xt_physdev These extensions are not used by ebtables in userspace. Moreover, xt_realm is only for ipv4, since dst->tclassid is ipv4 specific.
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基金会开源的操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于netfilter xtables扩展中xt_mac、xt_owner、xt_physdev和xt_realm匹配未限制为inet协议族，可能导致在错误协议族下使用。
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 ab4f21e6fb1c09b13c4c3cb8357babe8223471bd ~ 14203f9edf944b3fb63faadd62f38452421ecdfc -
Linux Linux 2.6.28 -

II. Public POCs for CVE-2026-53001

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III. Intelligence Information for CVE-2026-53001

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Patches & Fixes for CVE-2026-53001 (8)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-53049 9.8 CRITICAL gfs2: add some missing log locking
CVE-2026-52993 9.8 CRITICAL tipc: fix double-free in tipc_buf_append()
CVE-2026-52989 9.8 CRITICAL nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-52986 9.8 CRITICAL netfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-52982 9.8 CRITICAL net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-53002 9.8 CRITICAL netfilter: conntrack: remove sprintf usage
CVE-2026-53006 9.8 CRITICAL ipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-53045 9.8 CRITICAL memory: tegra124-emc: Fix dll_change check
CVE-2026-53086 9.8 CRITICAL net: bcmgenet: fix racing timeout handler
CVE-2026-53046 9.8 CRITICAL ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-52955 9.8 CRITICAL libceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-53010 9.8 CRITICAL ksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-53088 9.8 CRITICAL net: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-52914 9.8 CRITICAL batman-adv: fix fragment reassembly length accounting
CVE-2026-53055 9.8 CRITICAL crypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-52924 9.8 CRITICAL sctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-52931 9.8 CRITICAL batman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-52999 9.1 CRITICAL netfilter: nfnetlink_osf: fix out-of-bounds read on option matching
CVE-2026-53043 9.1 CRITICAL ocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-52958 9.1 CRITICAL libceph: Fix potential out-of-bounds access in osdmap_decode()

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53001

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