Summary
It was discovered that the Upper Level Protocol (ULP) subsystem in the
Linux kernel did not properly handle sockets entering the LISTEN state in
certain protocols, leading to a use-after-free vulnerability. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2023-0461)
Lee Jones discovered that a use-after-free vulnerability existed in the
Bluetooth implementation in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2022-20566)
It was discovered that the ISDN implementation of the Linux kernel
contained a use-after-free vulnerability. A privileged user could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2022-3565)
It was discovered that the Netlink Transformation (XFRM) subsystem in the
Linux kernel contained a reference counting error. A local attacker could
use this to cause a denial of service (system crash). (CVE-2022-36879)
It was discovered that the USB monitoring (usbmon) component in the Linux
kernel did not properly set permissions on memory mapped in to user space
processes. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-43750)
It was discovered that the NFSD implementation in the Linux kernel
contained a use-after-free vulnerability. A remote attacker could possibly
use this to cause a denial of service (system crash) or execute arbitrary
code. (CVE-2022-4379)
It was discovered that the Atmel WILC1000 driver in the Linux kernel did
not properly validate offsets, leading to an out-of-bounds read
vulnerability. An attacker could use this to cause a denial of service
(system crash). (CVE-2022-47520)
José Oliveira and Rodrigo Branco discovered that the prctl syscall
implementation in the Linux kernel did not properly protect against
indirect branch prediction attacks in some situations. A local attacker
could possibly use this to expose sensitive information. (CVE-2023-0045)
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oem-5.14 | 5.14.0-1058.66 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-oem-5.17 | 5.17.0-1028.29 |
Vulnerabilities 8
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High 7.8
In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. This could lead to local e…
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High 7.8CVE-2023-0461 Public exploit
Use-after-free vulnerability in the Linux Kernel
There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not …
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High 7.5
A use-after-free vulnerability was found in __nfs42_ssc_open() in fs/nfs/nfs4file.c in the Linux kernel. This flaw allo…
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High 7.1
An issue was discovered in the Linux kernel before 6.0.11. Missing offset validation in drivers/net/wireless/microchip/…
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Medium 6.7
drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user-space client …
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Medium 5.5
An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a…
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Medium 4.7CVE-2023-0045 Public exploit
Incorrect indirect branch prediction barrier in the Linux Kernel
The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ib_prctl_set function updates the Thread Information Flags (TIFs) for the task and updates the SPEC_CTRL MSR on the function __speculation_ctrl_update,…
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Medium 4.6
Linux Kernel Bluetooth l1oip_core.c del_timer use after free
A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the component Bluetooth. The manipulation leads to use after free. It is recomme…
References
-
report
https://ubuntu.com/security/CVE-2022-3565
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report
https://ubuntu.com/security/CVE-2022-4379
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report
https://ubuntu.com/security/CVE-2022-20566
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report
https://ubuntu.com/security/CVE-2022-36879
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report
https://ubuntu.com/security/CVE-2022-43750
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report
https://ubuntu.com/security/CVE-2022-47520
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report
https://ubuntu.com/security/CVE-2023-0045
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report
https://ubuntu.com/security/CVE-2023-0461