CVE-2023-52681 - OpenCVE

In the Linux kernel, the following vulnerability has been resolved: efivarfs: Free s_fs_info on unmount Now that we allocate a s_fs_info struct on fs context creation, we should ensure that we free it again when the superblock goes away.

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

Vendors	Products
Linux	Linux Kernel

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/48be1364dd387e375e1274b76af986cb8747be2c
https://git.kernel.org/stable/c/547713d502f7b4b8efccd409cff84d731a23853b
https://git.kernel.org/stable/c/92be3095c6ca1cdc46237839c6087555be9160e3
https://git.kernel.org/stable/c/ea6b597fcaca99562fa56a473bcbbbd79b40af03
https://lore.kernel.org/linux-cve-announce/2024051751-CVE-2023-52681-9f54@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-52681
https://www.cve.org/CVERecord?id=CVE-2023-52681

History

Mon, 04 Nov 2024 15:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 12 Sep 2024 08:30:00 +0000

Type	Values Removed	Values Added
Metrics	ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 11 Sep 2024 13:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-17T14:24:44.687Z

Updated: 2025-06-19T12:39:12.925Z

Reserved: 2024-03-07T14:49:46.887Z

Link: CVE-2023-52681

Vulnrichment

Updated: 2024-08-02T23:11:35.411Z

NVD

Status : Awaiting Analysis

Published: 2024-05-17T15:15:19.360

Modified: 2025-06-19T13:15:25.340

Link: CVE-2023-52681

Redhat

Severity : Moderate

Publid Date: 2024-05-17T00:00:00Z

Links: CVE-2023-52681 - Bugzilla

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-52681", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-07T14:49:46.887Z", "datePublished": "2024-05-17T14:24:44.687Z", "dateUpdated": "2025-06-19T12:39:12.925Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-06-19T12:39:12.925Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: Free s_fs_info on unmount\n\nNow that we allocate a s_fs_info struct on fs context creation, we\nshould ensure that we free it again when the superblock goes away."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/efivarfs/super.c"], "versions": [{"version": "5329aa5101f73c451bcd48deaf3f296685849d9c", "lessThan": "92be3095c6ca1cdc46237839c6087555be9160e3", "status": "affected", "versionType": "git"}, {"version": "5329aa5101f73c451bcd48deaf3f296685849d9c", "lessThan": "547713d502f7b4b8efccd409cff84d731a23853b", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/efivarfs/super.c"], "versions": [{"version": "6.7", "status": "affected"}, {"version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.2", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.8"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/92be3095c6ca1cdc46237839c6087555be9160e3"}, {"url": "https://git.kernel.org/stable/c/547713d502f7b4b8efccd409cff84d731a23853b"}], "title": "efivarfs: Free s_fs_info on unmount", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:35.411Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/ea6b597fcaca99562fa56a473bcbbbd79b40af03", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/48be1364dd387e375e1274b76af986cb8747be2c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/92be3095c6ca1cdc46237839c6087555be9160e3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/547713d502f7b4b8efccd409cff84d731a23853b", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52681", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:42:06.026593Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:32:50.371Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/ea6b597fcaca99562fa56a473bcbbbd79b40af03", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/48be1364dd387e375e1274b76af986cb8747be2c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/92be3095c6ca1cdc46237839c6087555be9160e3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/547713d502f7b4b8efccd409cff84d731a23853b", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:35.411Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52681", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:42:06.026593Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:13.002Z"}}], "cna": {"title": "efivarfs: Free s_fs_info on unmount", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5329aa5101f73c451bcd48deaf3f296685849d9c", "lessThan": "92be3095c6ca1cdc46237839c6087555be9160e3", "versionType": "git"}, {"status": "affected", "version": "5329aa5101f73c451bcd48deaf3f296685849d9c", "lessThan": "547713d502f7b4b8efccd409cff84d731a23853b", "versionType": "git"}], "programFiles": ["fs/efivarfs/super.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.7"}, {"status": "unaffected", "version": "0", "lessThan": "6.7", "versionType": "semver"}, {"status": "unaffected", "version": "6.7.2", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/efivarfs/super.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/92be3095c6ca1cdc46237839c6087555be9160e3"}, {"url": "https://git.kernel.org/stable/c/547713d502f7b4b8efccd409cff84d731a23853b"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: Free s_fs_info on unmount\n\nNow that we allocate a s_fs_info struct on fs context creation, we\nshould ensure that we free it again when the superblock goes away."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.2", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-06-19T12:39:12.925Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52681", "state": "PUBLISHED", "dateUpdated": "2025-06-19T12:39:12.925Z", "dateReserved": "2024-03-07T14:49:46.887Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-17T14:24:44.687Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"bugzilla": {"description": "kernel: efivarfs: Free s_fs_info on unmount", "id": "2281322", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281322"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nefivarfs: Free s_fs_info on unmount\nNow that we allocate a s_fs_info struct on fs context creation, we\nshould ensure that we free it again when the superblock goes away.", "A flaw was found in the efivarfs filesystem in the Linux kernel, where s_fs_info is not properly freed upon unmounting. This oversight can lead to a use-after-free condition, which could be exploited by an attacker to execute arbitrary code or cause a system crash."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2023-52681", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "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": "2024-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52681\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52681\nhttps://lore.kernel.org/linux-cve-announce/2024051751-CVE-2023-52681-9f54@gregkh/T"], "statement": "Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.", "threat_severity": "Moderate"}