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CVE-2026-53148— thunderbolt: Clamp XDomain response data copy to allocation size

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 4.15版本存在安全漏洞，该漏洞源于tb_xdp_properties_request()函数在从响应头中推导每包复制长度时未检查其是否适合先前分配的数据缓冲区，可能导致恶意对等方设置比声明data_length更大的长度字段，导致memcpy写入超出kcalloc分配范围。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1042

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 0b334279a82d79fb4723bd4f614305de1ab69caa affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 6021d39ccd979713b39b980286020d8f9a45efd1 affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0d affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 5db10c8ad8c09f72c847dfeef3d876098257f505 affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 05a43157676c243c248d1c6d9dcecbe6eba2f35d affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< fcbd0cdab92838854a5818be7ed8a097164ef6d5 affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 906035d5c3784570191d259cbf9a0ac1617852b5 affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 322e93448d908434ae5545660fcbe8f5a7a8e141 affected
… +10 more rows
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I. Basic Information for CVE-2026-53148

Vulnerability Information
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Vulnerability Title
thunderbolt: Clamp XDomain response data copy to allocation size
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Clamp XDomain response data copy to allocation size tb_xdp_properties_request() derives the per-packet copy length from the response header without checking that it fits in the previously allocated data buffer. A malicious peer can set its length field larger than the declared data_length, causing memcpy to write past the kcalloc allocation. Clamp the per-packet copy length so that the cumulative offset never exceeds data_len.
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 4.15版本存在安全漏洞，该漏洞源于tb_xdp_properties_request()函数在从响应头中推导每包复制长度时未检查其是否适合先前分配的数据缓冲区，可能导致恶意对等方设置比声明data_length更大的长度字段，导致memcpy写入超出kcalloc分配范围。
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 cdae7c07e3e3509eaabc18c1640a55dc5b99c179 ~ 0b334279a82d79fb4723bd4f614305de1ab69caa -
Linux Linux 4.15 -

II. Public POCs for CVE-2026-53148

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III. Intelligence Information for CVE-2026-53148

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Patches & Fixes for CVE-2026-53148 (8)

Same Patch Batch · Linux · 2026-06-25 · 146 CVEs total

CVE-2026-53247 9.8 CRITICAL net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown
CVE-2026-53215 9.8 CRITICAL net: mvpp2: refill RX buffers before XDP or skb use
CVE-2026-53216 9.8 CRITICAL net: mvpp2: limit XDP frame size to the RX buffer
CVE-2026-53246 9.8 CRITICAL sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing
CVE-2026-53151 9.8 CRITICAL rxrpc: Fix the ACK parser to extract the SACK table for parsing
CVE-2026-53221 9.8 CRITICAL ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
CVE-2026-53260 9.8 CRITICAL tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req().
CVE-2026-53175 9.8 CRITICAL inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush
CVE-2026-53176 9.8 CRITICAL IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
CVE-2026-53228 9.8 CRITICAL ipv6: sit: reload inner IPv6 header after GSO offloads
CVE-2026-53131 9.4 CRITICAL netfilter: require Ethernet MAC header before using eth_hdr()
CVE-2026-53225 9.1 CRITICAL sctp: fix uninit-value in __sctp_rcv_asconf_lookup()
CVE-2026-53224 9.1 CRITICAL sctp: validate embedded INIT chunk and address list lengths in cookie
CVE-2026-53186 9.1 CRITICAL RDMA/srp: bound SRP_RSP sense copy by the received length
CVE-2026-53240 8.8 HIGH xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload
CVE-2026-53170 8.8 HIGH accel/ethosu: reject DMA commands with uninitialized length
CVE-2026-53248 8.8 HIGH net: airoha: Fix use-after-free in metadata dst teardown
CVE-2026-53159 8.8 HIGH misc: fastrpc: fix DMA address corruption due to find_vma misuse
CVE-2026-53200 8.8 HIGH KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX
CVE-2026-53188 8.8 HIGH RDMA/core: Validate the passed in fops for ib_get_ucaps()

Showing top 20 of 146 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53148

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