CVEvulnerability

CVE-2020-29534

7.8 HIGH Published 2020-12-03 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-12-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C

Description

An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.

Affected configurations

• linux linux kernel (>= 5.1 < 5.8.18) • linux linux kernel (>= 5.9.0 < 5.9.3) • linux linux kernel 5.10

References