CVEvulnerability

CVE-2023-46838

7.5 HIGH Published 2024-01-29 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2024-01-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.

Affected configurations

• linux linux kernel (>= 4.14 < 4.19.306) • linux linux kernel (>= 4.20 < 5.4.268) • linux linux kernel (>= 5.5 < 5.10.209) • linux linux kernel (>= 5.11 < 5.15.148) • linux linux kernel (>= 5.16 < 6.1.75) • linux linux kernel (>= 6.2 < 6.6.14) • linux linux kernel (>= 6.7 < 6.7.2) • fedoraproject fedora 38 • fedoraproject fedora 39 • debian debian linux 10.0

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References