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CVE-2024-27020

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over nf_tables_expressions list in __nft_expr_type_get(). Therefore, there is potential data-race of nf_tables_expressions list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_expressions list in __nft_expr_type_get(), and use rcu_read_lock() in the caller nft_expr_type_get() to protect the entire type query process.

Related Files

Ubuntu Security Notice USN-6926-3
Posted Aug 12, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6926-3 - 黄思聪 discovered that the NFC Controller Interface implementation in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service. It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when modifying certain settings values through debugfs. A privileged local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-46343, CVE-2023-52436, CVE-2023-52444, CVE-2023-52449, CVE-2023-52469, CVE-2023-52752, CVE-2024-25739, CVE-2024-25744, CVE-2024-26857, CVE-2024-26882, CVE-2024-26923, CVE-2024-27020, CVE-2024-35978, CVE-2024-35997
SHA-256 | 67f80c016324f30ff3664a941b9a12abe1b24c7c9def9edb0d9cde6176d5315c
Ubuntu Security Notice USN-6926-2
Posted Aug 2, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6926-2 - 黄思聪 discovered that the NFC Controller Interface implementation in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service. It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when modifying certain settings values through debugfs. A privileged local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-46343, CVE-2023-52435, CVE-2023-52436, CVE-2023-52443, CVE-2023-52444, CVE-2023-52449, CVE-2023-52752, CVE-2024-25739, CVE-2024-25744, CVE-2024-26882, CVE-2024-26901, CVE-2024-26923, CVE-2024-27020, CVE-2024-35978
SHA-256 | 2d46229c1bb410100a951de8431f990f91bf51ba7ec8b3772ca11b05a1a2247c
Ubuntu Security Notice USN-6938-1
Posted Aug 1, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6938-1 - It was discovered that the device input subsystem in the Linux kernel did not properly handle the case when an event code falls outside of a bitmap. A local attacker could use this to cause a denial of service. 黄思聪 discovered that the NFC Controller Interface implementation in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-46932, CVE-2021-46960, CVE-2022-48619, CVE-2023-46343, CVE-2023-52444, CVE-2023-52449, CVE-2023-52620, CVE-2024-24857, CVE-2024-25739, CVE-2024-26840, CVE-2024-26884, CVE-2024-26886, CVE-2024-26934, CVE-2024-27020
SHA-256 | 2b1fe74bf4e050be2f9b24272b13e4eb597cb8e2474c9e01998d2ad12881b722
Ubuntu Security Notice USN-6926-1
Posted Jul 29, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6926-1 - 黄思聪 discovered that the NFC Controller Interface implementation in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service. It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when modifying certain settings values through debugfs. A privileged local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-46343, CVE-2023-52436, CVE-2023-52444, CVE-2023-52449, CVE-2023-52469, CVE-2023-52752, CVE-2024-25739, CVE-2024-25744, CVE-2024-26857, CVE-2024-26882, CVE-2024-26923, CVE-2024-27020, CVE-2024-35978, CVE-2024-35997
SHA-256 | 5946767f63c59a1b35d467132768a7ffe22b7db995b64fbe9e4a10be86c172d9
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