CVE-2023-38431
Ubuntu Security Notice USN-6466-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/connection.c in ksmbd does not validate the relationship between the NetBIOS header's length field and the SMB header sizes, via pdu_size in ksmbd_conn_handler_loop, leading to an out-of-bounds read.
Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate certain data structure fields when parsing lease contexts, leading to an out-of-bounds read vulnerability. A remote attacker could use this to cause a denial of service or possibly expose sensitive information. Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel, leading to a use-after-free vulnerability. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2023-07-17 CVE Reserved
- 2023-07-17 CVE Published
- 2024-08-02 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (3)
URL | Tag | Source |
---|---|---|
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.8 | Release Notes | |
https://security.netapp.com/advisory/ntap-20230824-0011 | Third Party Advisory |
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URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=368ba06881c395f1c9a7ba22203cf8d78b4addc0 | 2023-12-15 |
URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 6.1.34 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 6.1.34" | - |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.2 < 6.3.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.3.8" | - |
Affected
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Netapp Search vendor "Netapp" | Solidfire \& Hci Management Node Search vendor "Netapp" for product "Solidfire \& Hci Management Node" | - | - |
Affected
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Netapp Search vendor "Netapp" | H300s Search vendor "Netapp" for product "H300s" | - | - |
Affected
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Netapp Search vendor "Netapp" | H410s Search vendor "Netapp" for product "H410s" | - | - |
Affected
| ||||||
Netapp Search vendor "Netapp" | H500s Search vendor "Netapp" for product "H500s" | - | - |
Affected
| ||||||
Netapp Search vendor "Netapp" | H700s Search vendor "Netapp" for product "H700s" | - | - |
Affected
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