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CVE-2023-52638

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock The following 3 locks would race against each other, causing the deadlock situation in the Syzbot bug report: - j1939_socks_lock - active_session_list_lock - sk_session_queue_lock A reasonable fix is to change j1939_socks_lock to an rwlock, since in the rare situations where a write lock is required for the linked list that j1939_socks_lock is protecting, the code does not attempt to acquire any more locks. This would break the circular lock dependency, where, for example, the current thread already locks j1939_socks_lock and attempts to acquire sk_session_queue_lock, and at the same time, another thread attempts to acquire j1939_socks_lock while holding sk_session_queue_lock. NOTE: This patch along does not fix the unregister_netdevice bug reported by Syzbot; instead, it solves a deadlock situation to prepare for one or more further patches to actually fix the Syzbot bug, which appears to be a reference counting problem within the j1939 codebase. [mkl: remove unrelated newline change]

Related Files

Ubuntu Security Notice USN-6895-3
Posted Jul 19, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6895-3 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the HugeTLB file system component of the Linux Kernel contained a NULL pointer dereference vulnerability. A privileged attacker could possibly use this to to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-52631, CVE-2023-52637, CVE-2023-52638, CVE-2023-52643, CVE-2023-6270, CVE-2024-0841, CVE-2024-1151, CVE-2024-23307, CVE-2024-24861, CVE-2024-26593, CVE-2024-26600, CVE-2024-26601, CVE-2024-26602, CVE-2024-26603
SHA-256 | c2cdeb8147a5ff711973b3c8fee175db573062bd9897685481c20a336ce711eb
Ubuntu Security Notice USN-6900-1
Posted Jul 17, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6900-1 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the HugeTLB file system component of the Linux Kernel contained a NULL pointer dereference vulnerability. A privileged attacker could possibly use this to to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-52631, CVE-2023-52638, CVE-2023-52643, CVE-2023-52645, CVE-2023-52880, CVE-2023-6270, CVE-2024-0841, CVE-2024-1151, CVE-2024-23307, CVE-2024-24861, CVE-2024-26593, CVE-2024-26600, CVE-2024-26603, CVE-2024-26642
SHA-256 | e97da32f17a29fe4696411be940643a9db1b1d29119fc6286db6efced74e2225
Ubuntu Security Notice USN-6895-2
Posted Jul 16, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6895-2 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the HugeTLB file system component of the Linux Kernel contained a NULL pointer dereference vulnerability. A privileged attacker could possibly use this to to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-52631, CVE-2023-52637, CVE-2023-52638, CVE-2023-52643, CVE-2023-6270, CVE-2024-0841, CVE-2024-1151, CVE-2024-23307, CVE-2024-24861, CVE-2024-26593, CVE-2024-26601, CVE-2024-26602, CVE-2024-26603, CVE-2024-26642
SHA-256 | cb98f5e56d9db06a20eb3399970fe6e4dd6d1c03b16d42a3b8b246d6254a725f
Ubuntu Security Notice USN-6895-1
Posted Jul 12, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6895-1 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the HugeTLB file system component of the Linux Kernel contained a NULL pointer dereference vulnerability. A privileged attacker could possibly use this to to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-52631, CVE-2023-52638, CVE-2023-52642, CVE-2023-52643, CVE-2023-52645, CVE-2023-6270, CVE-2024-0841, CVE-2024-1151, CVE-2024-23307, CVE-2024-24861, CVE-2024-26593, CVE-2024-26603, CVE-2024-26606, CVE-2024-26642
SHA-256 | 13204fe1d646093191f86b432d013bd53e9fab0b9ef81134435e8e12af260d6a
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