CVE-2023-52494 - OpenCVE

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Add alignment check for event ring read pointer Though we do check the event ring read pointer by "is_valid_ring_ptr" to make sure it is in the buffer range, but there is another risk the pointer may be not aligned. Since we are expecting event ring elements are 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer could lead to multiple issues like DoS or ring buffer memory corruption. So add a alignment check for event ring read pointer.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

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/2df39ac8f813860f79782807c3f7acff40b3c551
https://git.kernel.org/stable/c/94991728c84f8df54fd9eec9b85855ef9057ea08
https://git.kernel.org/stable/c/a9ebfc405fe1be145f414eafadcbf09506082010
https://git.kernel.org/stable/c/ecf8320111822a1ae5d5fc512953eab46d543d0b
https://git.kernel.org/stable/c/eff9704f5332a13b08fbdbe0f84059c9e7051d5f
https://lore.kernel.org/linux-cve-announce/20240229155245.1571576-35-lee@kernel.org/T
https://nvd.nist.gov/vuln/detail/CVE-2023-52494
https://www.cve.org/CVERecord?id=CVE-2023-52494

History

No history.

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-02-29T15:52:11.674Z

Updated: 2024-11-04T14:47:57.452Z

Reserved: 2024-02-20T12:30:33.304Z

Link: CVE-2023-52494

Vulnrichment

Updated: 2024-08-02T23:03:20.652Z

NVD

Status : Awaiting Analysis

Published: 2024-03-11T18:15:17.000

Modified: 2024-03-12T12:40:13.500

Link: CVE-2023-52494

Redhat

Severity : Moderate

Publid Date: 2024-02-29T00:00:00Z

Links: CVE-2023-52494 - Bugzilla

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{"bugzilla": {"description": "kernel: bus: mhi: host: Add alignment check for event ring read pointer", "id": "2269179", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2269179"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbus: mhi: host: Add alignment check for event ring read pointer\nThough we do check the event ring read pointer by \"is_valid_ring_ptr\"\nto make sure it is in the buffer range, but there is another risk the\npointer may be not aligned. Since we are expecting event ring elements\nare 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer\ncould lead to multiple issues like DoS or ring buffer memory corruption.\nSo add a alignment check for event ring read pointer.", "A flaw was found in the Linux Kernel. 128 bit struct mhi_ring_element aligned event ring elements are expected, but an unaligned read pointer can be passed. An unaligned read pointer could lead to multiple issues, including a denial of service or ring buffer memory corruption."], "name": "CVE-2023-52494", "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": "2024-02-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52494\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52494\nhttps://lore.kernel.org/linux-cve-announce/20240229155245.1571576-35-lee@kernel.org/T"], "statement": "No Red Hat products are affected by this vulnerability.", "threat_severity": "Moderate", "upstream_fix": "kernel 5.15.149, kernel 6.1.76, kernel 6.6.15, kernel 6.7.3, kernel 6.8-rc1"}