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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-53343 Detail

Description

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.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/2a4dc9a0ac3326e79fb58fdaae724b92127709a9 kernel.org
https://git.kernel.org/stable/c/517720913bd3c17a52cd55a740064f68455ab88e kernel.org
https://git.kernel.org/stable/c/77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6 kernel.org
https://git.kernel.org/stable/c/c0b8c148a7754826156993ed6442d31536ec86b4 kernel.org
https://git.kernel.org/stable/c/c2e3aadc8fef7da068490597fc5582f8f362aeb2 kernel.org
https://git.kernel.org/stable/c/c74990828d3c486ee44aaa68240eb3abff289d1c kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-53343
NVD Published Date:
07/01/2026
NVD Last Modified:
07/01/2026
Source:
kernel.org