CVE-2023-52615

hwrng: core - Fix page fault dead lock on mmap-ed hwrng

Published Mar 18, 2024 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
In the Linux kernel, the following vulnerability has been resolved:

hwrng: core - Fix page fault dead lock on mmap-ed hwrng

There is a dead-lock in the hwrng device read path. This triggers
when the user reads from /dev/hwrng into memory also mmap-ed from
/dev/hwrng. The resulting page fault triggers a recursive read
which then dead-locks.

Fix this by using a stack buffer when calling copy_to_user.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3840-1 linux security update
Debian DLA Debian DLA DLA-3842-1 linux-5.10 security update
Debian DSA Debian DSA DSA-5681-1 linux security update
Ubuntu USN Ubuntu USN USN-6766-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6766-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6766-3 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-6767-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6767-2 Linux kernel (BlueField) vulnerabilities
Ubuntu USN Ubuntu USN USN-6774-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6795-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6828-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6865-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6866-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6866-2 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-6866-3 Linux kernel (Azure) vulnerabilities
History
Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.4
Vendors & Products Redhat rhel Eus
Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-667
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:9
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Linux
Published
Updated
May 11, 2026, 7:30 PM
Reserved
Mar 6, 2024, 9:52 AM
Status
Analyzed
Published
Mar 18, 2024, 11:15 AM
Modified
Jun 17, 2026, 6:43 AM
Severity
Moderate
Public date
Mar 18, 2024, 12:00 AM