In the Linux kernel, the following vulnerability has been resolved:

gsmi: fix null-deref in gsmi_get_variable

We can get EFI variables without fetching the attribute, so we must
allow for that in gsmi.

commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore
access layer") added a new get_variable call with attr=NULL, which
triggers panic in gsmi.

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.

The EPSS score is 0.00007.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
74c5b31c6618f01079212332b2e5f6c42f2d6307 affected
< ee5763ef829bd923033510de6d1df7c73f085e4b
74c5b31c6618f01079212332b2e5f6c42f2d6307 affected
< 32313c11bdc8a02c577abaf865be3664ab30410a
74c5b31c6618f01079212332b2e5f6c42f2d6307 affected
< ffef77794fb5f1245c3249b86342bad2299accb5
74c5b31c6618f01079212332b2e5f6c42f2d6307 affected
< ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd
74c5b31c6618f01079212332b2e5f6c42f2d6307 affected
< eb0421d90f916dffe96b4c049ddf01c0c50620d2
74c5b31c6618f01079212332b2e5f6c42f2d6307 affected
< 6646d769fdb0ce4318ef9afd127f8526d1ca8393
74c5b31c6618f01079212332b2e5f6c42f2d6307 affected
< a769b05eeed7accc4019a1ed9799dd72067f1ce8
Linux Linux affected
Version Status Constraints
3.0 affected
—
0 unaffected
< 3.0
4.14.304 unaffected
≤ 4.14.*
4.19.271 unaffected
≤ 4.19.*
5.4.230 unaffected
≤ 5.4.*
5.10.165 unaffected
≤ 5.10.*
5.15.90 unaffected
≤ 5.15.*
6.1.8 unaffected
≤ 6.1.*
6.2 unaffected
≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*

No data.

No data.

Project Subscriptions

Vendors Products
Linux Subscribe
Linux Kernel Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410a cve-icon cve-icon
https://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393 cve-icon cve-icon
https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8 cve-icon cve-icon
https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd cve-icon cve-icon
https://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2 cve-icon cve-icon
https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4b cve-icon cve-icon
https://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024082111-CVE-2023-52893-02b9@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-52893 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-52893 cve-icon
History

Wed, 11 Sep 2024 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-476
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

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'}

Wed, 21 Aug 2024 21:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 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'}

threat_severity

Moderate

Wed, 21 Aug 2024 06:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmi_get_variable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore access layer") added a new get_variable call with attr=NULL, which triggers panic in gsmi.
Title gsmi: fix null-deref in gsmi_get_variable
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T07:45:26.097Z

Reserved: 2024-08-21T06:07:11.013Z

Link: CVE-2023-52893

cve-icon Vulnrichment

Updated: 2024-09-11T12:42:18.608Z

cve-icon NVD

Status : Analyzed

Published: 2024-08-21T07:15:05.880

Modified: 2024-09-11T16:24:49.853

Link: CVE-2023-52893

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-08-21T00:00:00Z

Links: CVE-2023-52893 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses