CVE-2023-52479
Detail
Modified After Enrichment This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix uaf in smb20_oplock_break_ack
drop reference after use opinfo.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
NVD assessment
not yet provided.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace.
We have provided these links to other web sites because they
may have information that would be of interest to you. No
inferences should be drawn on account of other sites being
referenced, or not, from this page. There may be other web
sites that are more appropriate for your purpose. NIST does
not necessarily endorse the views expressed, or concur with
the facts presented on these sites. Further, NIST does not
endorse any commercial products that may be mentioned on
these sites. Please address comments about this page to [email protected]
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-416
Use After Free
NIST
Change History
10 change records found show changes
CVE Modified by kernel.org
8/15/2026 9:17:42 AM
Action
Type
Old Value
New Value
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"0626e6641f6b467447c81dd7678a69c66f7746cf","lessThan":"694e13732e830cbbfedb562e57f28644927c33fd","versionType":"git","status":"affected"},{"version":"0626e6641f6b467447c81dd7678a69c66f7746cf","lessThan":"8226ffc759ea59f10067b9acdf7f94bae1c69930","versionType":"git","status":"affected"},{"version":"0626e6641f6b467447c81dd7678a69c66f7746cf","lessThan":"d5b0e9d3563e7e314a850e81f42b2ef6f39882f9","versionType":"git","status":"affected"},{"version":"0626e6641f6b467447c81dd7678a69c66f7746cf","lessThan":"c69813471a1ec081a0b9bf0c6bd7e8afd818afce","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","versionType":"semver","status":"unaffected"},{"version":"5.15.135","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.57","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.5.7","lessThanOrEqual":"6.5.*","versionType":"semver","status":"unaffected"},{"version":"6.6","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","lessThan":"694e13732e830cbbfedb562e57f28644927c33fd","versionType":"git","status":"affected"},{"version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","lessThan":"8226ffc759ea59f10067b9acdf7f94bae1c69930","versionType":"git","status":"affected"},{"version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","lessThan":"d5b0e9d3563e7e314a850e81f42b2ef6f39882f9","versionType":"git","status":"affected"},{"version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","lessThan":"c69813471a1ec081a0b9bf0c6bd7e8afd818afce","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","versionType":"semver","status":"unaffected"},{"version":"5.15.135","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.57","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.5.7","lessThanOrEqual":"6.5.*","versionType":"semver","status":"unaffected"},{"version":"6.6","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
CVE Modified by kernel.org
8/04/2026 6:18:29 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE Modified by CISA-ADP
6/17/2026 2:42:49 AM
Action
Type
Old Value
New Value
Added
SSVC
{"timestamp":"2025-04-22T15:51:22.969165Z","id":"CVE-2023-52479","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}
CVE Modified by kernel.org
6/17/2026 2:42:49 AM
Action
Type
Old Value
New Value
Added
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"0626e6641f6b467447c81dd7678a69c66f7746cf","lessThan":"694e13732e830cbbfedb562e57f28644927c33fd","versionType":"git","status":"affected"},{"version":"0626e6641f6b467447c81dd7678a69c66f7746cf","lessThan":"8226ffc759ea59f10067b9acdf7f94bae1c69930","versionType":"git","status":"affected"},{"version":"0626e6641f6b467447c81dd7678a69c66f7746cf","lessThan":"d5b0e9d3563e7e314a850e81f42b2ef6f39882f9","versionType":"git","status":"affected"},{"version":"0626e6641f6b467447c81dd7678a69c66f7746cf","lessThan":"c69813471a1ec081a0b9bf0c6bd7e8afd818afce","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","versionType":"semver","status":"unaffected"},{"version":"5.15.135","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.57","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.5.7","lessThanOrEqual":"6.5.*","versionType":"semver","status":"unaffected"},{"version":"6.6","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
Initial Analysis by NIST
3/19/2025 11:51:23 AM
Action
Type
Old Value
New Value
Added
CWE
CWE-416
Added
CPE Configuration
OR
*cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:6.6:rc4:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.5.7
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.57
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15.135
Added
Reference Type
CVE: https://git.kernel.org/stable/c/694e13732e830cbbfedb562e57f28644927c33fd Types: Patch
Added
Reference Type
CVE: https://git.kernel.org/stable/c/8226ffc759ea59f10067b9acdf7f94bae1c69930 Types: Patch
Added
Reference Type
CVE: https://git.kernel.org/stable/c/c69813471a1ec081a0b9bf0c6bd7e8afd818afce Types: Patch
Added
Reference Type
CVE: https://git.kernel.org/stable/c/d5b0e9d3563e7e314a850e81f42b2ef6f39882f9 Types: Patch
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/694e13732e830cbbfedb562e57f28644927c33fd Types: Patch
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/8226ffc759ea59f10067b9acdf7f94bae1c69930 Types: Patch
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/c69813471a1ec081a0b9bf0c6bd7e8afd818afce Types: Patch
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/d5b0e9d3563e7e314a850e81f42b2ef6f39882f9 Types: Patch
CVE Modified by CVE
11/21/2024 3:39:51 AM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/694e13732e830cbbfedb562e57f28644927c33fd
Added
Reference
https://git.kernel.org/stable/c/8226ffc759ea59f10067b9acdf7f94bae1c69930
Added
Reference
https://git.kernel.org/stable/c/c69813471a1ec081a0b9bf0c6bd7e8afd818afce
Added
Reference
https://git.kernel.org/stable/c/d5b0e9d3563e7e314a850e81f42b2ef6f39882f9
CVE Modified by CISA-ADP
11/05/2024 11:35:06 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
CISA-ADP AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVE Modified by kernel.org
5/28/2024 4:16:30 PM
Action
Type
Old Value
New Value
CVE Modified by kernel.org
5/14/2024 10:22:28 AM
Action
Type
Old Value
New Value
New CVE Received from kernel.org
2/29/2024 1:15:45 AM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix uaf in smb20_oplock_break_ack
drop reference after use opinfo.
Added
Reference
Linux https://git.kernel.org/stable/c/694e13732e830cbbfedb562e57f28644927c33fd [No types assigned]
Added
Reference
Linux https://git.kernel.org/stable/c/8226ffc759ea59f10067b9acdf7f94bae1c69930 [No types assigned]
Added
Reference
Linux https://git.kernel.org/stable/c/c69813471a1ec081a0b9bf0c6bd7e8afd818afce [No types assigned]
Added
Reference
Linux https://git.kernel.org/stable/c/d5b0e9d3563e7e314a850e81f42b2ef6f39882f9 [No types assigned]
Quick Info
CVE Dictionary Entry: CVE-2023-52479 NVD
Published Date: 02/29/2024 NVD
Last Modified: 08/15/2026
Source: kernel.org
) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
