CVE-2024-42265

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

17/08/2024

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of ->fd[fd] in do_dup2() from mispredictions both callers have verified that fd is not greater than ->max_fds; however, misprediction might end up with tofree = fdt->fd[fd]; being speculatively executed. That&#39;s wrong for the same reasons why it&#39;s wrong in close_fd()/file_close_fd_locked(); the same solution applies - array_index_nospec(fd, fdt->max_fds) could differ from fd only in case of speculative execution on mispredicted path.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		4.19.320 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.282 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.224 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.165 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.104 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.45 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.10.4 (excluding)
cpe:2.3:o:linux:linux_kernel:6.11:rc1::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-42265

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools