CVE-2026-53343
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 8fe148d39c127de3fb78dfa6da95a3608dfda454 | affected | git | c0b8c148a7754826156993ed6442d31536ec86b4 | Unavailable | None listed |
| ef21187c0672a2b2cbec44f33bab9ec47d5c277c | affected | git | c2e3aadc8fef7da068490597fc5582f8f362aeb2 | Unavailable | None listed |
| c86d26b4b089ca294b3b7d915a7da61edb77935f | affected | git | c74990828d3c486ee44aaa68240eb3abff289d1c | Unavailable | None listed |
| 44e9a3bb76e5f2eecd374c8176b2c5163c8bb2e2 | affected | git | 517720913bd3c17a52cd55a740064f68455ab88e | Unavailable | None listed |
| 44e9a3bb76e5f2eecd374c8176b2c5163c8bb2e2 | affected | git | 2a4dc9a0ac3326e79fb58fdaae724b92127709a9 | Unavailable | None listed |
| 44e9a3bb76e5f2eecd374c8176b2c5163c8bb2e2 | affected | git | 77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6 | Unavailable | None listed |
| 6.1.120 | affected | semver | 6.1.176 | Unavailable | None listed |
| 6.6.64 | affected | semver | 6.6.143 | Unavailable | None listed |
| 6.12.4 | affected | semver | 6.12.94 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.13 | Unavailable | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.94 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.36 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.13 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |