CVE-2026-74551
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)
hwmon: (nzxt-smart2) DMA-align output buffer
In the Linux kernel, the following vulnerability has been resolved: hwmon: (nzxt-smart2) DMA-align output buffer Sashiko reports: When send_output_report() calls hid_hw_output_report(), the underlying USB HID core calls usb_interrupt_msg() which maps this buffer directly for DMA. When the DMA mapping flushes or invalidates the cacheline, it will corrupt the adjacent variables (mutex, update_interval) that were modified concurrently by the CPU. This causes memory corruption due to cacheline sharing on non-coherent CPU architectures (such as ARM or MIPS). The DMA API debugging tool (CONFIG_DMA_API_DEBUG) will trigger runtime warnings for this violation. Any operation that triggers send_output_report() (like setting a fan speed or updating the interval) causes the USB DMA mapping. On systems with non-coherent caches, this structural bug causes immediate and deterministic memory corruption. Align the output buffer to ARCH_DMA_MINALIGN to fix the problem.
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) |
|---|---|---|---|---|---|
| 53e68c20aeb1e23419bed811aa3a309ceda200f9 | affected | git | 81a6593b1c8dfb2694cd0ce39be01212d2b8436c | Unavailable | None listed |
| 53e68c20aeb1e23419bed811aa3a309ceda200f9 | affected | git | 70ad543ce81f368411b6c721265a3b2d7ab4fda4 | Unavailable | None listed |
| 53e68c20aeb1e23419bed811aa3a309ceda200f9 | affected | git | 51a76bc1b8e717ee3fc0d84f15ac51490ca5f76f | Unavailable | None listed |
| 53e68c20aeb1e23419bed811aa3a309ceda200f9 | affected | git | 2332d35aaf206c17acf848522817252732596676 | Unavailable | None listed |
| 53e68c20aeb1e23419bed811aa3a309ceda200f9 | affected | git | 6a2dbce5da2d2163a5b684acf68a0e54582ff0fa | Unavailable | None listed |
| 53e68c20aeb1e23419bed811aa3a309ceda200f9 | affected | git | 080bbf42faf77e6489ab30d5114c5f8f6ccbb1b8 | 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) |
|---|---|---|---|---|---|
| 5.17 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.17 | Unavailable | None listed |
| 6.1.183 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.151 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.103 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.44 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.8 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |