CVE-2026-53343

Katalog CVE

CVSS 5.5 · Medium EPSS 0,13%

Kerentanan pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow Commit 44e9a3bb76e5 ("ARM: 9430/1: entry: Do a dummy read from VMAP shadow") added a dummy read from the KASAN VMAP stack shadow in __switch_to(). The read uses ldr, but the KASAN shadow address is byte-granular and is not guaranteed to be word aligned. ARMv5 faults unaligned word loads. With CONFIG_KASAN_VMALLOC and CONFIG_VMAP_STACK enabled, ARM926/VersatilePB crashes in __switch_to() with an alignment exception before reaching init. Use ldrb for the dummy shadow access. The code only needs to fault in the shadow mapping if the stack shadow is missing, so a byte load is sufficient and matches the granularity of KASAN shadow memory.

Rincian

Terbit di NVD

1 Juli 2026

Terakhir diubah

23 Juli 2026

Status NVD

Analyzed

CVSS 3.1

5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

EPSS (30 hari)

0,13% peluang dieksploitasi; lebih tinggi dari 1,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/2a4dc9a0ac3326e79fb58fdaae724b92127709a9 patch
• https://git.kernel.org/stable/c/517720913bd3c17a52cd55a740064f68455ab88e patch
• https://git.kernel.org/stable/c/77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6 patch
• https://git.kernel.org/stable/c/c0b8c148a7754826156993ed6442d31536ec86b4 patch
• https://git.kernel.org/stable/c/c2e3aadc8fef7da068490597fc5582f8f362aeb2 patch
• https://git.kernel.org/stable/c/c74990828d3c486ee44aaa68240eb3abff289d1c patch