Summary
Hyunwoo Kim discovered that the DVB Core 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) or possibly execute arbitrary code.
(CVE-2022-45886, CVE-2022-45919)
Hyunwoo Kim discovered that the Technotrend/Hauppauge USB DEC driver in the
Linux kernel did not properly handle device removal events. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2022-45887)
It was discovered that the NTFS file system implementation in the Linux
kernel did not properly validate MFT flags in certain situations. An
attacker could use this to construct a malicious NTFS image that, when
mounted and operated on, could cause a denial of service (system crash).
(CVE-2022-48425)
It was discovered that the IPv6 implementation in the Linux kernel
contained a high rate of hash collisions in connection lookup table. A
remote attacker could use this to cause a denial of service (excessive CPU
consumption). (CVE-2023-1206)
Daniel Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD
processors utilising speculative execution and branch prediction may allow
unauthorised memory reads via a speculative side-channel attack. A local
attacker could use this to expose sensitive information, including kernel
memory. (CVE-2023-20569)
It was discovered that the IPv6 RPL protocol implementation in the Linux
kernel did not properly handle user-supplied data. A remote attacker could
use this to cause a denial of service (system crash). (CVE-2023-2156)
Yang Lan discovered that the GFS2 file system implementation in the Linux
kernel could attempt to dereference a null pointer in some situations. An
attacker could use this to construct a malicious GFS2 image that, when
mounted and operated on, could cause a denial of service (system crash).
(CVE-2023-3212)
It was discovered that the KSMBD implementation in the Linux kernel did not
properly validate buffer sizes in certain operations, leading to an integer
underflow and 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-2023-38427)
Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel
did not properly validate packet header sizes in certain situations,
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-2023-38431)
Andy Nguyen discovered that the KVM implementation for AMD processors in
the Linux kernel with Secure Encrypted Virtualization (SEV) contained a
race condition when accessing the GHCB page. A local attacker in a SEV
guest VM could possibly use this to cause a denial of service (host system
crash). (CVE-2023-4155)
It was discovered that the TUN/TAP driver in the Linux kernel did not
properly initialize socket data. A local attacker could use this to cause a
denial of service (system crash). (CVE-2023-4194)
Maxim Suhanov discovered that the exFAT file system implementation in the
Linux kernel did not properly check a file name length, leading to an out-
of-bounds write vulnerability. An attacker could use this to construct a
malicious exFAT image that, when mounted and operated on, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2023-4273)
Fixed packages 6
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | linux-aws-6.2 | 6.2.0-1013.13~22.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-azure-6.2 | 6.2.0-1014.14~22.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-azure-fde-6.2 | 6.2.0-1014.14~22.04.1.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-gcp-6.2 | 6.2.0-1016.18~22.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-hwe-6.2 | 6.2.0-34.34~22.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1014.14~22.04.1 |
Vulnerabilities 13
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Critical 9.8
An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/smb2pdu.c in ksmbd has an integer underflow and…
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High 7.8
In the Linux kernel through 6.2.7, fs/ntfs3/inode.c has an invalid kfree because it does not validate MFT flags before …
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Medium 6.0
Kernel: exfat: stack overflow in exfat_get_uniname_from_ext_entry
A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging …
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Medium 5.5
Kernel: tap: tap_open(): correctly initialize socket uid next fix of i_uid to current_fsuid
A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is t…
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Medium 5.3
Sev-es / sev-snp vmgexit double fetch vulnerability
A flaw was found in KVM AMD Secure Encrypted Virtualization (SEV) in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the `VMGEXIT` handler recursively. If an attacker…
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Medium 4.7
An issue was discovered in the Linux kernel through 6.0.9. drivers/media/usb/ttusb-dec/ttusb_dec.c has a memory leak be…
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Unscored —
An issue was discovered in the Linux kernel through 6.0.9. drivers/media/dvb-core/dvb_net.c has a .disconnect versus dv…
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Unscored —
An issue was discovered in the Linux kernel through 6.0.10. In drivers/media/dvb-core/dvb_ca_en50221.c, a use-after-fre…
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Unscored —CVE-2023-1206 Public exploit
A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a use…
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Unscored —
A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. …
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Unscored —
A flaw was found in the networking subsystem of the Linux kernel within the handling of the RPL protocol. This issue re…
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Unscored —
A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on corrupt gfs2 file …
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Unscored —
An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/connection.c in ksmbd does not validate the rel…
References
-
report
https://ubuntu.com/security/CVE-2022-45886
-
report
https://ubuntu.com/security/CVE-2022-45887
-
report
https://ubuntu.com/security/CVE-2022-45919
-
report
https://ubuntu.com/security/CVE-2022-48425
-
report
https://ubuntu.com/security/CVE-2023-1206
-
report
https://ubuntu.com/security/CVE-2023-2156
-
report
https://ubuntu.com/security/CVE-2023-3212
-
report
https://ubuntu.com/security/CVE-2023-4155
-
report
https://ubuntu.com/security/CVE-2023-4194
-
report
https://ubuntu.com/security/CVE-2023-4273
-
report
https://ubuntu.com/security/CVE-2023-20569
-
report
https://ubuntu.com/security/CVE-2023-38427
-
report
https://ubuntu.com/security/CVE-2023-38431