CVE-2023-32254
published 2023-07-10CVE-2023-32254: A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT…
PriorityP353high8.1CVSS 3.1
AVNACHPRNUINSUCHIHAH
EPSS
2.94%
85.6th percentile
A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.37-1 (bookworm) | linux 6.1.37-1 (bookworm) |
| linux | linux_kernel | >= 0 < 6.1.37-1 | 6.1.37-1 |
| linux | linux_kernel | >= 0 < 6.3.7-1 | 6.3.7-1 |
| linux | linux_kernel | >= 0 < 6.3.7-1 | 6.3.7-1 |
| linux | linux_kernel | >= 0 < 5.15.0-102.112 | 5.15.0-102.112 |
| linux | linux_kernel | >= 5.15 < 5.15.145 | 5.15.145 |
| linux | linux_kernel | >= 5.16 < 6.1.28 | 6.1.28 |
| linux | linux_kernel | >= 6.2 < 6.2.15 | 6.2.15 |
| linux | linux_kernel | >= 6.3 < 6.3.2 | 6.3.2 |
| msrc | cbl2_hyperv-daemons_5.15.145.2-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.118.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cm1_kernel_5.10.188.1-1_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
osv8.1HIGH
vendor_debian9.8CRITICAL
vendor_redhat9.8CRITICAL
vendor_msrc8.1HIGH
vendor_ubuntu7.1HIGH
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OSV
linux-aws, linux-aws-5.15 vulnerabilities
osv·2024-04-16·CVSS 8.1
CVE-2023-1194 [HIGH] linux-aws, linux-aws-5.15 vulnerabilities
linux-aws, linux-aws-5.15 vulnerabilities
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 (system crash) or possibly
expose sensitive information. (CVE-2023-1194)
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 (system crash) or possibly execute arbitrary code. (CVE-2023-32254)
It was discovered that a race condition existed in the KSMBD implementation
in the Linux kernel when handling session connections, l
OSV
linux, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel
osv·2024-04-09·CVSS 8.1
[HIGH] linux, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel
linux, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-raspi vulnerabilities
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 (system crash) or possibly
expose sensitive information. (CVE-2023-1194)
Quentin Minster discovered that a race condition existed in the KSMBD
implementation in the L
GHSA
GHSA-p3v2-rv86-5c5f: A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server
ghsa_unreviewed·2023-07-10
CVE-2023-32254 [HIGH] CWE-362 GHSA-p3v2-rv86-5c5f: A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server
A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
OSV
CVE-2023-32254: A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server
osv·2023-07-10·CVSS 8.1
CVE-2023-32254 [HIGH] CVE-2023-32254: A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server
A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
OSV
linux-oem-6.1 vulnerabilities
osv·2023-06-16·CVSS 7.1
CVE-2023-31436 [HIGH] linux-oem-6.1 vulnerabilities
linux-oem-6.1 vulnerabilities
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform data buffer size validation in some
situations. A physically proximate attacker could use this to craft a
malicious USB device that when inserted, could cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-1380)
Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did
not properly perform permissions checks when handling HCI soc
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2024-04-16·CVSS 7.1
CVE-2023-38427 [HIGH] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
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 (system crash) or possibly
expose sensitive information. (CVE-2023-1194)
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 (system crash) or possibly execute arbitrary code. (CVE-2023-32254)
It was discovered that a race condition existed in the KSMBD imple
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-04-09·CVSS 7.1
CVE-2023-38427 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
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 (system crash) or possibly
expose sensitive information. (CVE-2023-1194)
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 (system crash) or possibly execute arbitrary code. (CVE-2023-32254)
It was discovered that a race condition existed in the KSMBD implementat
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2023-08-11·CVSS 6.8
CVE-2023-35823 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did
not properly perform permissions checks when handling HCI sockets. A
physically proximate attacker could use this to cause a denial of service
(bluetooth communication). (CVE-2023-2002)
Zheng Zhang discovered that the device-mapper implementation in the Linux
kernel did not properly handle locking during table_clear() operations. A
local attacker could use this to cause a denial of service (kernel
deadlock). (CVE-2023-2269)
It was discovered that the Ricoh R5C592 MemoryStick card reader driver in
the Linux kernel contained a race condition during module unload, leading
to a use-after-free vulnerability. A local at
Microsoft
Tree connection race condition remote code execution vulnerability
vendor_msrc·2023-07-11·CVSS 8.1
CVE-2023-32254 [CRITICAL] CWE-362 Tree connection race condition remote code execution vulnerability
Tree connection race condition remote code execution vulnerability
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
redhat: redhat
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference:
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2023-06-16·CVSS 7.1
CVE-2023-32254 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform data buffer size validation in some
situations. A physically proximate attacker could use this to craft a
malicious USB device that when inserted, could cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-1380)
Ruihan Li discovered that the bluetooth subsystem in the
Red Hat
kernel: ksmbd: tree connection race condition remote code execution vulnerability
vendor_redhat·2023-05-17·CVSS 9.8
CVE-2023-32254 [CRITICAL] CWE-413 kernel: ksmbd: tree connection race condition remote code execution vulnerability
kernel: ksmbd: tree connection race condition remote code execution vulnerability
A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
Statement: No Red
Debian
CVE-2023-32254: linux - A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB s...
vendor_debian·2023·CVSS 9.8
CVE-2023-32254 [CRITICAL] CVE-2023-32254: linux - A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB s...
A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
Scope: local
bookworm: resolved (fixed in 6.1.37-1)
bullseye: resolved
forky: resolved (fixed in 6.3.7-1)
sid: resolved (fixed in 6.3.7-1)
trixie: resolved (fixed in 6.3.7-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://access.redhat.com/security/cve/CVE-2023-32254https://bugzilla.redhat.com/show_bug.cgi?id=2191658https://security.netapp.com/advisory/ntap-20230824-0004/https://www.zerodayinitiative.com/advisories/ZDI-23-702/https://access.redhat.com/security/cve/CVE-2023-32254https://bugzilla.redhat.com/show_bug.cgi?id=2191658https://security.netapp.com/advisory/ntap-20230824-0004/https://www.zerodayinitiative.com/advisories/ZDI-23-702/
2023-07-10
Published