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CVE-2026-53074— bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb

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，该漏洞源于在bpf_prog_test_run_skb函数中短IPv4/IPv6输入处理不当，可能导致在仅包含以太网头部的测试输入中访问网络头部。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.11% · P1

Possible ATT&CK Techniques 1 AI

T1205.002 · Socket Filters

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux fa5cb548ced61b9d3095f32f8a7e427a248c65ee< 7254267799d083280c0e53effc101a33add95f7b affected
fa5cb548ced61b9d3095f32f8a7e427a248c65ee< 6a9f38d5ff11e00bc54baab752642978805e81eb affected
fa5cb548ced61b9d3095f32f8a7e427a248c65ee< e6aa481f21fc7a41ed344767ea25aae9d03fae71 affected
fa5cb548ced61b9d3095f32f8a7e427a248c65ee< 0a04db240effd85773f66244645a28cedddb72d2 affected
fa5cb548ced61b9d3095f32f8a7e427a248c65ee< 1f882c492d46f90bdb36f4936876c88c28dab21c affected
fa5cb548ced61b9d3095f32f8a7e427a248c65ee< 8042240412de3222d27b31e89d29336961cad9e4 affected
fa5cb548ced61b9d3095f32f8a7e427a248c65ee< 6def5fe753cbe5b279ee5fd10327b2611cbddaca affected
fa5cb548ced61b9d3095f32f8a7e427a248c65ee< 12bec2bd4b76d81c5d3996bd14ec1b7f4d983747 affected
… +10 more rows
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I. Basic Information for CVE-2026-53074

Vulnerability Information
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Vulnerability Title
bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb bpf_prog_test_run_skb() calls eth_type_trans() first and then uses skb->protocol to initialize sk family and address fields for the test run. For IPv4 and IPv6 packets, it may access ip_hdr(skb) or ipv6_hdr(skb) even when the provided test input only contains an Ethernet header. Reject the input earlier if the Ethernet frame carries IPv4/IPv6 EtherType but the L3 header is too short. Fold the IPv4/IPv6 header length checks into the existing protocol switch and return -EINVAL before accessing the network headers.
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，该漏洞源于在bpf_prog_test_run_skb函数中短IPv4/IPv6输入处理不当，可能导致在仅包含以太网头部的测试输入中访问网络头部。
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 fa5cb548ced61b9d3095f32f8a7e427a248c65ee ~ 7254267799d083280c0e53effc101a33add95f7b -
Linux Linux 5.9 -

II. Public POCs for CVE-2026-53074

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III. Intelligence Information for CVE-2026-53074

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Patches & Fixes for CVE-2026-53074 (7)

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-2026-53086 9.8 CRITICAL net: bcmgenet: fix racing timeout handler
CVE-2026-53045 9.8 CRITICAL memory: tegra124-emc: Fix dll_change check
CVE-2026-53006 9.8 CRITICAL ipv6: fix possible UAF in icmpv6_rcv()
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-2026-53074

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