CVE-2026-43427
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
39/100
Published: 2026-05-08
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
None
A:
High
Description
In the Linux kernel, the following vulnerability has been resolved: usb: class: cdc-wdm: fix reordering issue in read code path Quoting the bug report: Due to compiler optimization or CPU out-of-order execution, the desc->length update can be reordered before the memmove. If this happens, wdm_read() can see the new length and call copy_to_user() on uninitialized memory. This also violates LKMM data race rules [1]. Fix it by using WRITE_ONCE and memory barriers.
Weakness Classification (1)
Affected Software (24)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | afba937e540c902c989cd516fd97ea0c8499bb27 < 638328ca9c17ae6511ad62198c57bae32ffa3c91 |
| Linux | Linux | afba937e540c902c989cd516fd97ea0c8499bb27 < 170e8daca24da6edb4be82ab01abf44e87af387b |
| Linux | Linux | afba937e540c902c989cd516fd97ea0c8499bb27 < c8fa96ed021923dae147bcd9f9205b8df7b82360 |
| Linux | Linux | afba937e540c902c989cd516fd97ea0c8499bb27 < 4ee3062bf2c9a722afef429826e8607eaf3fc6a0 |
| Linux | Linux | afba937e540c902c989cd516fd97ea0c8499bb27 < 276aef0fd2b92f41b920ac891c72cadeee957934 |
| Linux | Linux | afba937e540c902c989cd516fd97ea0c8499bb27 < 67ed312124bb1b61858778ac0b985b48961c862a |
| Linux | Linux | afba937e540c902c989cd516fd97ea0c8499bb27 < e3c874b05901dc519054b5107d16620e6d2b5fea |
| Linux | Linux | afba937e540c902c989cd516fd97ea0c8499bb27 < 8df672bfe3ec2268c2636584202755898e547173 |
| Linux | Linux | 2.6.26 |
| linux | linux_kernel | 2.6.26.1 – 5.10.253 |
| linux | linux_kernel | 2.6.26 |
| linux | linux_kernel | 2.6.26 |
| linux | linux_kernel | 2.6.26 |
| linux | linux_kernel | 2.6.26 |
| linux | linux_kernel | 2.6.26 |
| linux | linux_kernel | 2.6.26 |
| linux | linux_kernel | 2.6.26 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |