Summary
Quentin Minster discovered that a race condition existed in the KSMBD
implementation in the Linux kernel when handling sessions operations. A
remote attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2023-32250, CVE-2023-32252,
CVE-2023-32257)
Marek Marczykowski-Górecki discovered that the Xen event channel
infrastructure implementation in the Linux kernel contained a race
condition. An attacker in a guest VM could possibly use this to cause a
denial of service (paravirtualized device unavailability). (CVE-2023-34324)
Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver
in the Linux kernel during device removal. A privileged attacker could use
this to cause a denial of service (system crash). (CVE-2023-35827)
Tom Dohrmann discovered that the Secure Encrypted Virtualization (SEV)
implementation for AMD processors in the Linux kernel contained a race
condition when accessing MMIO registers. A local attacker in a SEV guest VM
could possibly use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2023-46813)
It was discovered that the Microchip USB Ethernet driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could use this to
cause a denial of service (system crash). (CVE-2023-6039)
It was discovered that the TLS subsystem in the Linux kernel did not
properly perform cryptographic operations in some situations, leading to a
null pointer dereference vulnerability. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-6176)
Xingyuan Mo discovered that the netfilter subsystem in the Linux kernel did
not properly handle dynset expressions passed from userspace, leading to a
null pointer dereference vulnerability. A local attacker could use this to
cause a denial of service (system crash). (CVE-2023-6622)
It was discovered that the TIPC protocol implementation in the Linux kernel
did not properly handle locking during tipc_crypto_key_revoke() operations.
A local attacker could use this to cause a denial of service (kernel
deadlock). (CVE-2024-0641)
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | linux-lowlatency | 5.15.0-94.104 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-raspi | 5.15.0-1046.49 |
Vulnerabilities 10
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Critical 9.0
Session 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_SESSION_SETUP commands. The issue results from the lack of proper locking when performing operations on an object. An…
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High 8.1
Session 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_SESSION_SETUP and SMB2_LOGOFF commands. The issue results from the lack of proper locking when performing operations …
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High 7.5
Session null pointer dereference denial-of-service vulnerability
A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_LOGOFF commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker c…
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High 7.0CVE-2023-46813 Public exploit
An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO regi…
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Medium 5.5
Kernel: use-after-free in drivers/net/usb/lan78xx.c in lan78xx_disconnect
A use-after-free flaw was found in lan78xx_disconnect in drivers/net/usb/lan78xx.c in the network sub-component, net/usb/lan78xx in the Linux Kernel. This flaw allows a local attacker to crash the system when the LAN78XX USB device detaches.
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Medium 5.5
Kernel: null pointer dereference vulnerability in nft_dynset_init()
A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel. This issue may allow a local attacker with CAP_NET_ADMIN user privilege to trigger a denial of service.
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Medium 5.5
Kernel: deadlock leading to denial of service in tipc_crypto_key_revoke
A denial of service vulnerability was found in tipc_crypto_key_revoke in net/tipc/crypto.c in the Linux kernel’s TIPC subsystem. This flaw allows guests with local user privileges to trigger a deadlock and potentially crash the system.
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Medium 4.9
Possible deadlock in Linux kernel event handling
Closing of an event channel in the Linux kernel can result in a deadlock. This happens when the close is being performed in parallel to an unrelated Xen console action and the handling of a Xen console interrupt in an unprivileged guest. The closing of an eve…
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Medium 4.7
Kernel: local dos vulnerability in scatterwalk_copychunks
A null pointer dereference flaw was found in the Linux kernel API for the cryptographic algorithm scatterwalk functionality. This issue occurs when a user constructs a malicious packet with specific socket configuration, which could allow a local user to cras…
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Unscored —
An issue was discovered in the Linux kernel through 6.3.8. A use-after-free was found in ravb_remove in drivers/net/eth…
References
-
report
https://ubuntu.com/security/CVE-2023-6039
-
report
https://ubuntu.com/security/CVE-2023-6176
-
report
https://ubuntu.com/security/CVE-2023-6622
-
report
https://ubuntu.com/security/CVE-2023-32250
-
report
https://ubuntu.com/security/CVE-2023-32252
-
report
https://ubuntu.com/security/CVE-2023-32257
-
report
https://ubuntu.com/security/CVE-2023-34324
-
report
https://ubuntu.com/security/CVE-2023-35827
-
report
https://ubuntu.com/security/CVE-2023-46813
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report
https://ubuntu.com/security/CVE-2024-0641