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CVE-2026-53195— USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr()

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 2.6.12版本存在安全漏洞，该漏洞源于build_i2c_fw_hdr()函数分配固定大小缓冲区后，未验证img_header->Length是否适合可用空间，可能导致堆溢出。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 3e187152f44d76d7633a3855ffd0099e1588b82a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< b7faf660eefa2047ebc2959ff76da2b6eae2e9e3 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 2fd64bf0ad66ab5de0c73524591d879427ba5aba affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 4cb722747ed25971f35cc47ce5c0e79d7f717713 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 130d6567eb148040eed1b73e1414ad6c27d22bd5 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 294692d3296eee3391c348d7ea6401916d27806c affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 5a79b634ee58786ca627268daefa7744f2af2e14 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 0fd2b00b2d3d05e3eaa13342b3dfb0fa85c226ae affected
… +10 more rows
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I. Basic Information for CVE-2026-53195

Vulnerability Information
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Vulnerability Title
USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() build_i2c_fw_hdr() allocates a fixed-size buffer of (16*1024 - 512) + sizeof(struct ti_i2c_firmware_rec) bytes, then copies le16_to_cpu(img_header->Length) bytes into it without validating that Length fits within the available space after the firmware record header. img_header->Length is a __le16 from the firmware file and can be up to 65535. check_fw_sanity() validates the total firmware size but not img_header->Length specifically. Fix by rejecting images where img_header->Length exceeds the available destination space.
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 2.6.12版本存在安全漏洞，该漏洞源于build_i2c_fw_hdr()函数分配固定大小缓冲区后，未验证img_header->Length是否适合可用空间，可能导致堆溢出。
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 3e187152f44d76d7633a3855ffd0099e1588b82a -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2026-53195

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III. Intelligence Information for CVE-2026-53195

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Patches & Fixes for CVE-2026-53195 (8)

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

CVE-2026-53228 9.8 CRITICAL ipv6: sit: reload inner IPv6 header after GSO offloads
CVE-2026-53247 9.8 CRITICAL net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown
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-2026-53260 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-2026-53221 9.8 CRITICAL ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
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-2026-53131 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-2026-53186 9.1 CRITICAL RDMA/srp: bound SRP_RSP sense copy by the received length
CVE-2026-53224 9.1 CRITICAL sctp: validate embedded INIT chunk and address list lengths in cookie
CVE-2026-53200 8.8 HIGH KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX
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-2026-53198 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-2026-53232 8.8 HIGH net: phy: clean the sfp upstream if phy probing fails

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-2026-53195

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