CVE-2024-36931 - Vulnerability Details - OpenCVE

ReportizFlow

In the Linux kernel, the following vulnerability has been resolved: s390/cio: Ensure the copied buf is NUL terminated Currently, we allocate a lbuf-sized kernel buffer and copy lbuf from userspace to that buffer. Later, we use scanf on this buffer but we don't ensure that the string is terminated inside the buffer, this can lead to OOB read when using scanf. Fix this issue by using memdup_user_nul instead.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/06759ebaf75c19c87b2453a5e130e9e61e9b5d65
https://git.kernel.org/stable/c/10452edd175fcc4fd0f5ac782ed2a002e3e5d65c
https://git.kernel.org/stable/c/84b38f48836662c4bfae646c014f4e981e16a2b2
https://git.kernel.org/stable/c/c9d48ce163305595ae20aee27774192476d5e6a5
https://git.kernel.org/stable/c/da7c622cddd4fe36be69ca61e8c42e43cde94784
https://lore.kernel.org/linux-cve-announce/2024053041-CVE-2024-36931-3201@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2024-36931
https://www.cve.org/CVERecord?id=CVE-2024-36931

History

Thu, 26 Sep 2024 02:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-170
Metrics	cvssV3_1 `{'score': 5.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/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'}`

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-30T15:29:22.601Z

Updated: 2024-12-19T09:02:20.724Z

Reserved: 2024-05-30T15:25:07.071Z

Link: CVE-2024-36931

Vulnrichment

Updated: 2024-06-05T18:21:29.890Z

NVD

Status : Awaiting Analysis

Published: 2024-05-30T16:15:16.293

Modified: 2024-11-21T09:22:50.793

Link: CVE-2024-36931

Redhat

Severity : Moderate

Publid Date: 2024-05-30T00:00:00Z

Links: CVE-2024-36931 - Bugzilla

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{"bugzilla": {"description": "kernel: s390/cio: Ensure the copied buf is NUL terminated", "id": "2284492", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2284492"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-170->CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ns390/cio: Ensure the copied buf is NUL terminated\nCurrently, we allocate a lbuf-sized kernel buffer and copy lbuf from\nuserspace to that buffer. Later, we use scanf on this buffer but we don't\nensure that the string is terminated inside the buffer, this can lead to\nOOB read when using scanf. Fix this issue by using memdup_user_nul instead.", "A flaw was found in the Linux kernel\u2019s cio_inject module. Data from the user space is copied to a kernel buffer without making sure it is NULL terminated, causing an out-of-bounds read and resulting in a denial of service."], "name": "CVE-2024-36931", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-36931\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-36931\nhttps://lore.kernel.org/linux-cve-announce/2024053041-CVE-2024-36931-3201@gregkh/T"], "statement": "The cio_inject module is not built in the kernel shipped in Red Hat Enterprise Linux, so it is not affected by this vulnerability.", "threat_severity": "Moderate", "upstream_fix": "kernel 5.15.159, kernel 6.1.91, kernel 6.6.31, kernel 6.8.10, kernel 6.9"}