CVE-2024-38580

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

19/06/2024

Last modified:

04/08/2026

Description

In the Linux kernel, the following vulnerability has been resolved: epoll: be better about file lifetimes epoll can call out to vfs_poll() with a file pointer that may race with the last &#39;fput()&#39;. That would make f_count go down to zero, and while the ep->mtx locking means that the resulting file pointer tear-down will be blocked until the poll returns, it means that f_count is already dead, and any use of it won&#39;t actually get a reference to the file any more: it&#39;s dead regardless. Make sure we have a valid ref on the file pointer before we call down to vfs_poll() from the epoll routines.

Impact

Vector 3.x

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

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		5.15.161 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.93 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.33 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.8.12 (excluding)
cpe:2.3:o:linux:linux_kernel:6.9:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.9:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.9:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.9:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.9:rc5::::::
cpe:2.3:o:linux:linux_kernel:6.9:rc6::::::

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

CVE-2024-38580

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools