Summary
It was discovered that the IP-VLAN network driver for the Linux kernel did
not properly initialize memory in some situations, leading to an out-of-
bounds write vulnerability. An attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2023-3090)
Mingi Cho discovered that the netfilter subsystem in the Linux kernel did
not properly validate the status of a nft chain while performing a lookup
by id, leading to a use-after-free vulnerability. An attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2023-31248)
Querijn Voet discovered that a race condition existed in the io_uring
subsystem in the Linux kernel, 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-2023-3389)
It was discovered that the netfilter subsystem in the Linux kernel did not
properly handle some error conditions, 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-2023-3390)
Lin Ma discovered that a race condition existed in the MCTP implementation
in the Linux kernel, leading to a use-after-free vulnerability. A
privileged attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2023-3439)
Tanguy Dubroca discovered that the netfilter subsystem in the Linux kernel
did not properly handle certain pointer data type, leading to an out-of-
bounds write vulnerability. A privileged attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2023-35001)
Fixed packages 23
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | linux-aws-5.15 | 5.15.0-1040.45~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-azure-5.15 | 5.15.0-1042.49~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-azure-fde-5.15 | 5.15.0-1042.49~20.04.1.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gcp-5.15 | 5.15.0-1038.46~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gke-5.15 | 5.15.0-1038.43~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gkeop-5.15 | 5.15.0-1024.29~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-hwe-5.15 | 5.15.0-78.85~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-lowlatency-hwe-5.15 | 5.15.0-78.85~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oracle-5.15 | 5.15.0-1039.45~20.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux | 5.15.0-78.85 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-aws | 5.15.0-1040.45 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-azure | 5.15.0-1042.49 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-azure-fde | 5.15.0-1042.49.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-gcp | 5.15.0-1038.46 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-gke | 5.15.0-1038.43 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-gkeop | 5.15.0-1024.29 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-ibm | 5.15.0-1034.37 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-intel-iotg | 5.15.0-1036.41 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-kvm | 5.15.0-1038.43 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-lowlatency | 5.15.0-78.85 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-nvidia | 5.15.0-1029.29 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-oracle | 5.15.0-1039.45 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-raspi | 5.15.0-1034.37 |
Vulnerabilities 6
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High 7.8
Out-of-bounds write in Linux kernel's ipvlan network driver
A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to achieve local privilege escalation. The out-of-bounds write is caused by missing skb->cb initialization in the ipvlan network driver. The vulnerability is r…
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High 7.8
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace
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High 7.8
Use after free in io_uring in the Linux Kernel
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac5…
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High 7.8CVE-2023-3390 Public exploit
Use-after-free in Linux kernel's netfilter subsystem
A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vu…
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High 7.8CVE-2023-35001 Public exploit
Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability
Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability; nft_byteorder poorly handled vm register contents when CAP_NET_ADMIN is in any user or network namespace
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Medium 4.7
A flaw was found in the MCTP protocol in the Linux kernel. The function mctp_unregister() reclaims the device's relevan…