CVE-2026-63934: linux kernel

csirt@kutim:~/threat-intel/cve/CVE-2026-63934

CVSS 7.1 · High EPSS 0,16%

Kerentanan Out-of-bounds Read pada linux kernel. Skor CVSS 3.1 7.1 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: iio: gyro: itg3200: fix i2c read into the wrong stack location itg3200_read_all_channels() takes `__be16 *buf' as a parameter and fills the i2c_msg destination as `(char *)&buf'. Since `buf' is the parameter (a pointer), `&buf' is the address of the local pointer slot on the stack of itg3200_read_all_channels(), not the address of the caller's scan buffer. The (char *) cast hides the type mismatch. i2c_transfer() therefore writes ITG3200_SCAN_ELEMENTS * sizeof(s16) = 8 bytes into the parameter's stack slot, which is discarded when the function returns. The caller's scan buffer in itg3200_trigger_handler() is never written to, so iio_push_to_buffers_with_timestamp() pushes uninitialised stack contents to userspace via /dev/iio:deviceX every scan -- both a functional bug (no actual gyroscope or temperature data is delivered through the triggered buffer) and an information leak. The non-buffered read_raw() path is unaffected: it goes through itg3200_read_reg_s16() which uses `&out' on a local s16 value, where that is correct. Drop the spurious `&' so the i2c read writes into the caller's buffer.

Rincian

Terbit di NVD: 19 Juli 2026
Terakhir diubah: 30 Oktober 2026
Status NVD: Analyzed
CVSS 3.1: 7.1 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-125: Out-of-bounds Read
EPSS (30 hari): 0,16% peluang dieksploitasi; lebih tinggi dari 5,1% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
linux	linux kernel	Versi 3.9 hingga sebelum 5.10.259
linux	linux kernel	Versi 5.11 hingga sebelum 5.15.210
linux	linux kernel	Versi 5.16 hingga sebelum 6.1.176
linux	linux kernel	Versi 6.2 hingga sebelum 6.6.143
linux	linux kernel	Versi 6.7 hingga sebelum 6.12.93
linux	linux kernel	Versi 6.13 hingga sebelum 6.18.35
linux	linux kernel	Versi 6.19 hingga sebelum 7.0.12
linux	linux kernel	Versi 7.1 rc1
linux	linux kernel	Versi 7.1 rc2
linux	linux kernel	Versi 7.1 rc3
linux	linux kernel	Versi 7.1 rc4
linux	linux kernel	Versi 7.1 rc5

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 31 Okt 2026, 06:25 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.