Summary
It was discovered that a race condition existed in the AppleTalk networking
subsystem of 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-2023-51781)
Zhenghan Wang discovered that the generic ID allocator implementation in
the Linux kernel did not properly check for null bitmap when releasing IDs.
A local attacker could use this to cause a denial of service (system
crash). (CVE-2023-6915)
Robert Morris discovered that the CIFS network file system implementation
in the Linux kernel did not properly validate certain server commands
fields, leading to an out-of-bounds read vulnerability. An attacker could
use this to cause a denial of service (system crash) or possibly expose
sensitive information. (CVE-2024-0565)
Jann Horn discovered that the TLS subsystem in the Linux kernel did not
properly handle spliced messages, leading to 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-2024-0646)
Fixed packages 17
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | linux | 5.4.0-172.190 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-aws | 5.4.0-1119.129 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-bluefield | 5.4.0-1079.85 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gcp | 5.4.0-1123.132 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gkeop | 5.4.0-1086.90 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-ibm | 5.4.0-1066.71 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-iot | 5.4.0-1031.32 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-kvm | 5.4.0-1107.114 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oracle | 5.4.0-1118.127 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-raspi | 5.4.0-1103.115 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-xilinx-zynqmp | 5.4.0-1038.42 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-aws-5.4 | 5.4.0-1119.129~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-gcp-5.4 | 5.4.0-1123.132~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-hwe-5.4 | 5.4.0-172.190~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-ibm-5.4 | 5.4.0-1066.71~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-oracle-5.4 | 5.4.0-1118.127~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-raspi-5.4 | 5.4.0-1103.115~18.04.1 |
Vulnerabilities 4
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High 7.0
Kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination
An out-of-bounds memory write flaw was found in the Linux kernel’s Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privile…
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Medium 6.8
Kernel: cifs filesystem decryption improper input validation remote code execution vulnerability in function receive_encrypted_standard of client
An out-of-bounds memory read flaw was found in receive_encrypted_standard in fs/smb/client/smb2ops.c in the SMB Client sub-component in the Linux Kernel. This issue occurs due to integer underflow on the memcpy length, leading to a denial of service.
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Medium 6.2
Kernel: null pointer dereference vulnerability in ida_free in lib/idr.c
A Null pointer dereference problem was found in ida_free in lib/idr.c in the Linux Kernel. This issue may allow an attacker using this library to cause a denial of service problem due to a missing check at a function return.
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Unscored —
An issue was discovered in the Linux kernel before 6.6.8. atalk_ioctl in net/appletalk/ddp.c has a use-after-free becau…