---
cve: "CVE-2026-53196"
severity: "MEDIUM"
cvss: 6.8
epss: "26%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-06-25 09:16:37"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T18:13:41+02:00"
---

# CVE-2026-53196

> 6.8 MEDIUM

## Beschreibung

In the Linux kernel, the following vulnerability has been resolved:

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

get_manuf_info() reads le16_to_cpu(rom_desc->Size) bytes from the
device I2C EEPROM into a buffer allocated with kmalloc_obj(), which
is sizeof(struct edge_ti_manuf_descriptor) = 10 bytes.

The Size field comes from the device and is only validated (in
check_i2c_image()) to make sure the descriptor fits within
TI_MAX_I2C_SIZE (16384 bytes), not against the destination buffer size.
A malicious USB device can therefore set Size to any value up to 16377,
causing a heap overflow of up to 16367 bytes when plugged into a host
running this driver.

valid_csum() is called after read_rom() and also iterates
buffer[0..Size-1], compounding the out-of-bounds access.

Fix by rejecting descriptors with unexpected length before calling
read_rom().

[ johan: amend commit message; also check for short descriptors ]

## CVSS-Vektor

```
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Physisch | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- Kernel ≥ 5.10.259
- Kernel ≥ 5.15.210
- Kernel ≥ 6.1.176
- Kernel ≥ 6.6.143
- Kernel ≥ 6.12.94
- Kernel ≥ 6.18.36
- Kernel ≥ 7.0.13

## Referenzen

- <https://git.kernel.org/stable/c/e168db91442b94e64fa82a7dd297983d48ea5cc0>
- <https://git.kernel.org/stable/c/561edb021486e6723d841926aa4b48097da06190>
- <https://git.kernel.org/stable/c/cfd634f6dfd40c49a84f9bddc2867a80e2e2623a>
- <https://git.kernel.org/stable/c/d92f17af7097d10bdeddf26f66f34b354104b277>
- <https://git.kernel.org/stable/c/b849f30d1a9e66aae6b715aaef66e427390cb081>
- <https://git.kernel.org/stable/c/f96cf7bf9fbf15d7fcf0c91fec47ba8a010369ea>
- <https://git.kernel.org/stable/c/d214d2341d4f9f447e36a7d012cdf6a6631a55f1>
- <https://git.kernel.org/stable/c/183c1076eca43bbb3e7bdf597456f91d81c73e74>
- <https://access.redhat.com/errata/RHSA-2026:61887>
- <https://access.redhat.com/errata/RHSA-2026:65708>
- <https://access.redhat.com/errata/RHSA-2026:65709>
- <https://access.redhat.com/errata/RHSA-2026:65710>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53196) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_