CVE-2024-46838

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: don't BUGON if khugepaged yanks our page table Since khugepaged was changed to allow retracting page tables in file mappings without holding the mmap lock, these BUGONs are wrong - get rid of them. We could also remo...

UBUNTU-CVE-2024-46845

In the Linux kernel, the following vulnerability has been resolved: tracing/timerlat: Only clear timer if a kthread exists The timerlat tracer can use user space threads to check for osnoise and timer latency. If the program using this is killed via a SIGTERM, the threads are shutdown one at a ti...

CVE-2024-46858 mptcp: pm: Fix uaf in __timer_delete_sync

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: Fix uaf in timerdeletesync There are two paths to access mptcppmdeladdtimer, result in a race condition: CPU1 CPU2 ==== ==== netrxaction napipoll netlinksendmsg napipoll netlinkunicast processbacklog netlinkunicastkern...

CVE-2024-46858 mptcp: pm: Fix uaf in __timer_delete_sync

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: Fix uaf in timerdeletesync There are two paths to access mptcppmdeladdtimer, result in a race condition: CPU1 CPU2 ==== ==== netrxaction napipoll netlinksendmsg napipoll netlinkunicast processbacklog netlinkunicastkern...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from a failure to release waitlock when dealing with deadlocks, resulting in a warning...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from not properly holding a bo lock...

September 26, 2024—KB5043145 (OS Builds 22621.4249 and 22631.4249) Preview

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UBUNTU-CVE-2024-45817

In x86's APIC Advanced Programmable Interrupt Controller architecture, error conditions are reported in a status register. Furthermore, the OS can opt to receive an interrupt when a new error occurs. It is possible to configure the error interrupt with an illegal vector, which generates an error...

kernel: gfs2: Fix potential glock use-after-free on unmount

A vulnerability was found in the Linux kernel within the gfs2 component, where potential use-after-free issues could occur on unmount. When DLM lockspaces are released with remaining locks, callbacks for asynchronous lock contention may access freed objects, causing unexpected behavior...

kernel: bpf, sockmap: Prevent lock inversion deadlock in map delete elem

CVE-2024-35895 addresses a vulnerability in the Linux kernel's Berkeley Packet Filter BPF subsystem, specifically within the sockmap feature. The issue arises when BPF tracing programs, which can execute in various interrupt contexts, attempt to delete elements from sockmap or sockhash maps. This...

kernel: gfs2: Fix potential glock use-after-free on unmount

A vulnerability was found in the Linux kernel within the gfs2 component, where potential use-after-free issues could occur on unmount. When DLM lockspaces are released with remaining locks, callbacks for asynchronous lock contention may access freed objects, causing unexpected behavior...

kernel: ext4: do not create EA inode under buffer lock

A vulnerability was found in the Linux kernel's ext4 filesystem, where the system could create EA inodes while holding a buffer lock, this approach can lead to deadlocks, especially if the filesystem is corrupted...

kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()

A vulnerability was found in the Linux kernel's networking subsystem in the actapi implementation within the tcfidrcheckalloc function, which lead to a possible infinite loop when multiple actions with the same index are added, causing the second request to block indefinitely while holding the...

kernel: wifi: mac80211: Fix deadlock in ieee80211_sta_ps_deliver_wakeup()

A vulnerability was found in the Linux kernel's mac80211 component within the ieee80211stapsdeliverwakeup function, where improper locking of the sta-pslock can lead to a deadlock condition, which occurs because the function uses a spin lock without preventing softirq execution on the same CPU,...

kernel: ext4: fix uninitialized ratelimit_state->lock access in __ext4_fill_super()

A vulnerability was found in the Linux kernel's ext4 filesystem within the ext4fillsuper function, where uninitialized access to ratelimitstate-lock can occur, where the sysfs interface is registered before properly initializing rs-lock, potentially allowing other processes to modify rs-interval ...

kernel: wifi: iwlwifi: read txq->read_ptr under lock

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: read txq-readptr under lock If we read txq-readptr without lock, we can read the same value twice, then obtain the lock, and reclaim from there to two different places, but crucially reclaim the same entry twice,...

kernel: serial: core: fix transmit-buffer reset and memleak

In the Linux kernel, the following vulnerability has been resolved: serial: core: fix transmit-buffer reset and memleak Commit 761ed4a94582 "tty: serialcore: convert uartclose to use ttyportclose" converted serial core to use ttyportclose but failed to notice that the transmit buffer still needs ...

kernel: scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload

In the Linux kernel, the following vulnerability has been resolved: scsi: bnx2fc: Remove spinlockbh while releasing resources after upload The session resources are used by FW and driver when session is offloaded, once session is uploaded these resources are not used. The lock is not required as...

kernel: wifi: cfg80211: Lock wiphy in cfg80211_get_station

A vulnerability was found in the Linux kernel in wifi driver in cfg80211getstation function, where the wiphy was not locked before calling rdevgetstation, which lead to a NULL pointer dereference when a station disconnects and reconnects during a work queue operation, resulting in a kernel panic...

kernel: Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout

A flaw was found in the Linux kernel's Bluetooth L2CAP Logical Link Control and Adaptation Protocol component. A race condition between channel deletion and timeout handling can lead to a null-pointer dereference in the l2capchantimeout function. A local attacker with low privileges could exploit...