CVE-2026-53147— thunderbolt: Validate XDomain request packet size before type cast
Possible ATT&CK Techniques 2AI
T1190 · Exploit Public-Facing Application T1203 · Exploitation for Client ExecutionAffected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | cdae7c07e3e3509eaabc18c1640a55dc5b99c179< a770e62923090d7572f1f5a8507ae551d354a057 | affected |
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 0dd61ba03d05187726ecdf9c0e2175a81b9b24f6 | affected | ||
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 79235c8add5da4bf27a12f5a5dbb579f300c059e | affected | ||
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 46da5c3ea011e884028a91cf913db093920a915b | affected | ||
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 07cd2787cdf8942d24a1a3ef81aa89b526fb6381 | affected | ||
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< a504b9f2797b739e0304d537e8aa4ce883ecce39 | affected | ||
4.15 | affected | ||
< 4.15 | unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2026-53147
Vulnerability Information
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Vulnerability Title
thunderbolt: Validate XDomain request packet size before type cast
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Validate XDomain request packet size before type cast tb_xdp_handle_request() casts the received packet buffer to protocol-specific structs without verifying that the allocation is large enough for the target type. A peer can send a minimal XDomain packet that passes the generic header length check but is shorter than the struct accessed after the cast, causing out-of- bounds reads from the kmemdup allocation. Plumb the packet length through xdomain_request_work and validate it against the expected struct size before each cast.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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版本及之前版本存在安全漏洞，该漏洞源于thunderbolt驱动在tb_xdp_handle_request()函数中未验证XDomain请求数据包大小是否正确，可能导致越界读取。
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
II. Public POCs for CVE-2026-53147
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-53147 (5)
Same Patch Batch · Linux · 2026-06-25 · 147 CVEs total
| CVE-2026-53228 | 9.8 CRITICAL | ipv6: sit: reload inner IPv6 header after GSO offloads |
| CVE-2026-53221 | 9.8 CRITICAL | ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup() |
| CVE-2026-53151 | 9.8 CRITICAL | rxrpc: Fix the ACK parser to extract the SACK table for parsing |
| CVE-2026-53216 | 9.8 CRITICAL | net: mvpp2: limit XDP frame size to the RX buffer |
| CVE-2026-53215 | 9.8 CRITICAL | net: mvpp2: refill RX buffers before XDP or skb use |
| CVE-2026-53246 | 9.8 CRITICAL | sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing |
| CVE-2026-53247 | 9.8 CRITICAL | net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown |
| CVE-2026-53176 | 9.8 CRITICAL | IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN |
| CVE-2026-53175 | 9.8 CRITICAL | inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush |
| CVE-2026-53260 | 9.8 CRITICAL | tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req(). |
| CVE-2026-53131 | 9.4 CRITICAL | netfilter: require Ethernet MAC header before using eth_hdr() |
| CVE-2026-53186 | 9.1 CRITICAL | RDMA/srp: bound SRP_RSP sense copy by the received length |
| 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-2026-53198 | 8.8 HIGH | ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL |
| CVE-2026-53188 | 8.8 HIGH | RDMA/core: Validate the passed in fops for ib_get_ucaps() |
| CVE-2026-53248 | 8.8 HIGH | net: airoha: Fix use-after-free in metadata dst teardown |
| CVE-2026-53170 | 8.8 HIGH | accel/ethosu: reject DMA commands with uninitialized length |
| CVE-2026-53232 | 8.8 HIGH | net: phy: clean the sfp upstream if phy probing fails |
| CVE-2026-53240 | 8.8 HIGH | xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload |
Showing top 20 of 147 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected - CVE-2026-53358
Bluetooth: L2CAP: use chan timer to close channels in cleanu
Same vendor: Linux
- CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected - CVE-2026-53358
Bluetooth: L2CAP: use chan timer to close channels in cleanu
V. Comments for CVE-2026-53147
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