CVE-2026-43427

7.1 Élevée

Publiée le 08/05/2026 à 17:16 · Modifiée le 17/06/2026 à 12:49 · Analysée par le NVD · Source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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.

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Produits concernés

Linux
Linux linux kernel

Scores CVSS

Version	Score	Source	Vecteur
3.1	7.1 Élevée	nvd@nist.gov (NVD)	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`

Faiblesses (CWE)

CWE-125

Références

https://git.kernel.org/stable/c/170e8daca24da6edb4be82ab01abf44e87af387b Patch
https://git.kernel.org/stable/c/276aef0fd2b92f41b920ac891c72cadeee957934 Patch
https://git.kernel.org/stable/c/4ee3062bf2c9a722afef429826e8607eaf3fc6a0 Patch
https://git.kernel.org/stable/c/638328ca9c17ae6511ad62198c57bae32ffa3c91 Patch
https://git.kernel.org/stable/c/67ed312124bb1b61858778ac0b985b48961c862a Patch
https://git.kernel.org/stable/c/8df672bfe3ec2268c2636584202755898e547173 Patch
https://git.kernel.org/stable/c/c8fa96ed021923dae147bcd9f9205b8df7b82360 Patch
https://git.kernel.org/stable/c/e3c874b05901dc519054b5107d16620e6d2b5fea Patch

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories