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CVE-2022-42896

Status Candidate

Overview

There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim. We recommend upgrading past commit https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url

Related Files

Ubuntu Security Notice USN-5832-1
Posted Jan 31, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5832-1 - Kyle Zeng discovered that the sysctl implementation in the Linux kernel contained a stack-based buffer overflow. A local attacker could use this to cause a denial of service or execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-4378, CVE-2022-45934
SHA-256 | b242d051794285ce6fb5ea0e2560337d6d70a05108712a3794e5a8724e9960af
Ubuntu Security Notice USN-5831-1
Posted Jan 30, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5831-1 - Kyle Zeng discovered that the sysctl implementation in the Linux kernel contained a stack-based buffer overflow. A local attacker could use this to cause a denial of service or execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-4378, CVE-2022-45934
SHA-256 | b293ed3b171badbd869822b922ca5fe2bc5f7cdd18d474068ad2b6b97a51bc5f
Ubuntu Security Notice USN-5830-1
Posted Jan 30, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5830-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934
SHA-256 | 6e68f50f18b8299b6053e750db628304a61fb6f1ccf4186312d8814b9ac32cfd
Ubuntu Security Notice USN-5829-1
Posted Jan 26, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5829-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934
SHA-256 | aad823e9a2aa345a90ba89b0bbadac4b45a7aad04940b487e28febdc9f15b3ff
Ubuntu Security Notice USN-5814-1
Posted Jan 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5814-1 - Kyle Zeng discovered that the sysctl implementation in the Linux kernel contained a stack-based buffer overflow. A local attacker could use this to cause a denial of service or execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-4378, CVE-2022-45934
SHA-256 | dbfe665f3a1513799bf58ebfb34bae00253cc650f33bcb40256da98c77f5d57d
Ubuntu Security Notice USN-5813-1
Posted Jan 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5813-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934
SHA-256 | c8585d9310f20472858a349154e922f465a23afb78b9d227cd2a5767b334c7ee
Ubuntu Security Notice USN-5809-1
Posted Jan 18, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5809-1 - Kyle Zeng discovered that the sysctl implementation in the Linux kernel contained a stack-based buffer overflow. A local attacker could use this to cause a denial of service or execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-42896, CVE-2022-4378, CVE-2022-45934
SHA-256 | 9c7806fd2b27e8bf93c0572476e6a6a7bfd1fc39e41c523db32a80f8b535e96e
Ubuntu Security Notice USN-5808-1
Posted Jan 18, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5808-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934
SHA-256 | cc4443f00c1b80d3578f83459d2dcc84a73bd15607e61dc8a6a55c30a1f95a47
Ubuntu Security Notice USN-5804-2
Posted Jan 17, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5804-2 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934
SHA-256 | 432e44d00c7370626def9020ff038a803fee945c7cfa7c1e5694ed4a2e964793
Ubuntu Security Notice USN-5804-1
Posted Jan 13, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5804-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Tamas Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934
SHA-256 | eaaf2b382821a29f0cd1289ad47e022031258f5e6b7b5ad1a6f618862dfb5a67
Ubuntu Security Notice USN-5803-1
Posted Jan 13, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5803-1 - Kyle Zeng discovered that the sysctl implementation in the Linux kernel contained a stack-based buffer overflow. A local attacker could use this to cause a denial of service or execute arbitrary code. Tamas Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-4378, CVE-2022-45934
SHA-256 | 4a901d23fe04ca230ee9b786ae58b58154f66077be0ff2e81efffbae06b991af
Ubuntu Security Notice USN-5802-1
Posted Jan 13, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5802-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934
SHA-256 | 34428fdea7c82ae5cc1b2570fe09a946f45222b5e8de50755c8c2bd32c0ca4ff
Ubuntu Security Notice USN-5794-1
Posted Jan 9, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5794-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934
SHA-256 | f94cebf0ea6c3ab3da6d1994df82f1a6cfce5dea6344042ba9c85491090964a9
Ubuntu Security Notice USN-5783-1
Posted Dec 19, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5783-1 - Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-42896
SHA-256 | ded75e8ee910faa891b2c78070904a17a49f1586e664163f955990a82dbda6f2
Ubuntu Security Notice USN-5780-1
Posted Dec 15, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5780-1 - It was discovered that a memory leak existed in the IPv6 implementation of the Linux kernel. A local attacker could use this to cause a denial of service. It was discovered that the Bluetooth HCI implementation in the Linux kernel did not properly deallocate memory in some situations. An attacker could possibly use this cause a denial of service.

tags | advisory, denial of service, kernel, local, memory leak
systems | linux, ubuntu
advisories | CVE-2022-3524, CVE-2022-3619, CVE-2022-3628, CVE-2022-42895, CVE-2022-42896
SHA-256 | d3337c47fd67d37b0b8264e04a3c11dfe3161b7482b2c34e5ffa8cab3510d21a
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