CVE-2026-53195

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr()

HIGH

7.8

CVSS Score

Published: June 25, 2026 at 08:39 AM UTC

Updated: July 6, 2026 at 12:46 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.12 ≤ v < 5.10.2592.6.12 ≤ v < 5.15.2102.6.12 ≤ v < 6.1.1762.6.12 ≤ v < 6.12.942.6.12 ≤ v < 6.18.362.6.12 ≤ v < 6.6.1432.6.12 ≤ v < 7.0.132.6.12 ≤ v < 7.12.6.12.1 ≤ v < 5.10.2595.11 ≤ v < 5.15.2105.16 ≤ v < 6.1.1766.13 ≤ v < 6.18.366.19 ≤ v < 7.0.136.2 ≤ v < 6.6.1436.7 ≤ v < 6.12.941da177e4c3f41524e886b7f1b8a0c1fc7321cac2 2.6.12 2.6.12 rc2 2.6.12 rc3 2.6.12 rc4 2.6.12 rc5 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 7.1 rc5 7.1 rc6 7.1 rc7

Vendor states this is fixed in 0fd2b00b2d3d05e3eaa13342b3dfb0fa85c226ae (fixed)

Vendor states this is fixed in 130d6567eb148040eed1b73e1414ad6c27d22bd5 (fixed)

Vendor states this is fixed in 294692d3296eee3391c348d7ea6401916d27806c (fixed)

Vendor states this is fixed in 2fd64bf0ad66ab5de0c73524591d879427ba5aba (fixed)

Vendor states this is fixed in 3e187152f44d76d7633a3855ffd0099e1588b82a (fixed)

Vendor states this is fixed in 4cb722747ed25971f35cc47ce5c0e79d7f717713 (fixed)

Vendor states this is fixed in 5a79b634ee58786ca627268daefa7744f2af2e14 (fixed)

Vendor states this is fixed in b7faf660eefa2047ebc2959ff76da2b6eae2e9e3 (fixed)

Vendor states this is fixed in 2.6.12 (unaffected)

Vendor states this is fixed in 5.10.259 (unaffected)

Vendor states this is fixed in 5.15.210 (unaffected)

Vendor states this is fixed in 6.1.176 (unaffected)