CVE-2024-53042 ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow()

In the Linux kernel, the following vulnerability has been resolved: ipv4: iptunnel: Fix suspicious RCU usage warning in iptunnelinitflow There are code paths from which the function is called without holding the RCU read lock, resulting in a suspicious RCU usage warning 1. Fix by using...

CVE-2024-53042 ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow()

In the Linux kernel, the following vulnerability has been resolved: ipv4: iptunnel: Fix suspicious RCU usage warning in iptunnelinitflow There are code paths from which the function is called without holding the RCU read lock, resulting in a suspicious RCU usage warning 1. Fix by using...

CVE-2024-53042

CVE-2024-53042 affects the Linux kernel’s ipv4/ip_tunnel code. The issue arises from paths where ip_tunnel_init_flow() is invoked without holding the RCU read lock, triggering a suspicious RCU usage warning. The fix uses l3mdev_master_upper_ifindex_by_index() to acquire the RCU read lock before c...

CVE-2024-50304 ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_find()

In the Linux kernel, the following vulnerability has been resolved: ipv4: iptunnel: Fix suspicious RCU usage warning in iptunnelfind The per-netns IP tunnel hash table is protected by the RTNL mutex and iptunnelfind is only called from the control path where the mutex is taken. Add a lockdep...

CVE-2024-50304

The CVE-2024-50304 entry concerns the Linux kernel IPv4 ip_tunnel subsystem. A suspicious RCU usage warning in ip_tunnel_find() was addressed by adding a lockdep check to hlist_for_each_entry_rcu(), validating that the RTNL mutex is held. The per-netns IP tunnel hash table is protected by the RTN...

kernel: dm: fix use-after-free in dm_cleanup_zoned_dev()

In the Linux kernel, the following vulnerability has been resolved: dm: fix use-after-free in dmcleanupzoneddev dmcleanupzoneddev uses queue, so it must be called before blkcleanupdisk starts its killing: blkcleanupdisk-blkcleanupqueue-kobjectput-blkreleasequeue-...

The vulnerability of the rcu_scheduler_active() function in the net/sunrpc/xprtmultipath.c component of the Linux operating system, related to stack buffer overflows, allows a malicious actor to trigger a service failure.

The vulnerability of the rcuscheduleractive function in the net/sunrpc/xprtmultipath.c component of the Linux operating system is related to buffer overflows in the stack. Exploiting this vulnerability could allow an attacker to cause a service failure...

kernel: aio: fix use-after-free due to missing POLLFREE handling

In the Linux kernel, the following vulnerability has been resolved: aio: fix use-after-free due to missing POLLFREE handling signalfdpoll and binderpoll are special in that they use a waitqueue whose lifetime is the current task, rather than the struct file as is normally the case. This is okay f...

kernel: i2c: core: Run atomic i2c xfer when !preemptible

In the Linux kernel, the following vulnerability has been resolved: i2c: core: Run atomic i2c xfer when !preemptible Since bae1d3a05a8b, i2c transfers are non-atomic if preemption is disabled. However, non-atomic i2c transfers require preemption e.g. in waitforcompletion while waiting for the DMA...

kernel: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()

A hung task warning issue was found in the RCU scaling test module. When the holdoff parameter exceeds hungtasktimeoutsecs, the kernel logs a hung task warning for the rcuscalewriter kthread...

kernel: rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()

A locking violation was found in the Linux kernel RCU-tasks subsystem's callback list initialization. During system boot, the initialization code calls prinfo while holding the rtp-cbsgbllock spinlock, causing a potentially sleeping function to be called in atomic context, which results in kernel...

kernel: bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers

In the Linux kernel, the following vulnerability has been resolved: bpf: Check rcureadlocktraceheld before calling bpf map helpers These three bpfmaplookup,update,deleteelem helpers are also available for sleepable bpf program, so add the corresponding lock assertion for sleepable bpf program,...

PT-2024-37014

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to soft lockups in the Linux kernel's IPv6 route handling, specifically in the fib6 select path function. This occurs when the nodes of the linked list are...

DEBIAN-CVE-2024-50212

In the Linux kernel, the following vulnerability has been resolved: lib: alloctagmoduleunload must wait for pending kfreercu calls Ben Greear reports following splat: ------------ cut here ------------ net/netfilter/nfnatcore.c:1114 module nfnat func:nfnatregisterfn has 256 allocated at module...

PT-2025-3600

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue concerns a vulnerability in the Linux kernel where a disk revalidation changing the conventional zones bitmap of a disk could cause invalid memory references when using the dis...

AZL-52514 CVE-2024-50126 affecting package kernel for versions less than 6.6.64.2-1

In the Linux kernel, the following vulnerability has been resolved: net: sched: use RCU read-side critical section in tapriodump Fix possible use-after-free in 'tapriodump' by adding RCU read-side critical section there. Never seen on x86 but found on a KASAN-enabled arm64 system when investigati...

UBUNTU-CVE-2024-50127

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix use-after-free in tapriochange In 'tapriochange', 'admin' pointer may become dangling due to sched switch / removal caused by 'advancesched', and critical section protected by 'q-currententrylock' is too small to...

CVE-2024-50127 net: sched: fix use-after-free in taprio_change()

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix use-after-free in tapriochange In 'tapriochange', 'admin' pointer may become dangling due to sched switch / removal caused by 'advancesched', and critical section protected by 'q-currententrylock' is too small to...

CVE-2024-50126 net: sched: use RCU read-side critical section in taprio_dump()

In the Linux kernel, the following vulnerability has been resolved: net: sched: use RCU read-side critical section in tapriodump Fix possible use-after-free in 'tapriodump' by adding RCU read-side critical section there. Never seen on x86 but found on a KASAN-enabled arm64 system when investigati...

CVE-2024-50126

CVE-2024-50126 concerns the Linux kernel’s net/sched path, specifically the taprio_dump() function. The connected advisories confirm a concrete root cause: a use-after-free could occur due to missing an RCU read-side critical section around taprio_dump(). The remediation implemented is to wrap th...