Linux kernel net/sched DoS

The vulnerability of the net/sched component of the Linux operating system’s kernel is related to improper locking of resources in the qdisctreereducebacklog function. Exploiting this vulnerability can allow an attacker to cause a service failure...

SUSE CVE-2024-53057

In the Linux kernel, the following vulnerability has been resolved: net/sched: stop qdisctreereducebacklog on TCHROOT In qdisctreereducebacklog, Qdiscs with major handle ffff: are assumed to be either root or ingress. This assumption is bogus since it's valid to create egress qdiscs with major...

DEBIAN-CVE-2024-53057

In the Linux kernel, the following vulnerability has been resolved: net/sched: stop qdisctreereducebacklog on TCHROOT In qdisctreereducebacklog, Qdiscs with major handle ffff: are assumed to be either root or ingress. This assumption is bogus since it's valid to create egress qdiscs with major...

AZL-53855 CVE-2024-53057 affecting package kernel for versions less than 6.6.64.2-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: stop qdisctreereducebacklog on TCHROOT In qdisctreereducebacklog, Qdiscs with major handle ffff: are assumed to be either root or ingress. This assumption is bogus since it's valid to create egress qdiscs with major...

AZL-53921 CVE-2024-53057 affecting package kernel for versions less than 5.15.173.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: stop qdisctreereducebacklog on TCHROOT In qdisctreereducebacklog, Qdiscs with major handle ffff: are assumed to be either root or ingress. This assumption is bogus since it's valid to create egress qdiscs with major...

CVE-2024-53079 mm/thp: fix deferred split unqueue naming and locking

In the Linux kernel, the following vulnerability has been resolved: mm/thp: fix deferred split unqueue naming and locking Recent changes are putting more pressure on THP deferred split queues: under load revealing long-standing races, causing listdel corruptions, "Bad page state"s and worse I kee...

On November 13, NIST NVD finally admitted the obvious: they had failed to process the CVE analysis backlog before the end of the fiscal year (September 30)

On November 13, NIST NVD finallyadmittedthe obvious: they had failed to process the CVE analysis backlog before the end of the fiscal year September 30. This is actually visible in their own statistics. At the moment, there are 19860 identifiers in the backlog. This week, 1136 new CVEs were...

kernel: net/sched: fix lockdep splat in qdisc_tree_reduce_backlog()

CVE-2024-35892 is a vulnerability in the Linux kernel’s network scheduler caused by improper use of the qdisclookup function. This function assumes the global RTNL lock is held, but in the qdisctreereducebacklog function, only a local queue lock is used. This mismatch creates a race condition tha...

kernel: net/sched: act_mirred: use the backlog for mirred ingress

A potential deadlock flaw was found in net/sched/actmirred.c in the Linux kernel. This may lead to compromised Availability...

SUSE CVE-2024-49946

In the Linux kernel, the following vulnerability has been resolved: ppp: do not assume bh is held in pppchannelbridgeinput Networking receive path is usually handled from BH handler. However, some protocols need to acquire the socket lock, and packets might be stored in the socket backlog is the...

PT-2024-9881

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The issue is related to the use of memory after it has been freed in the qdisc tree reduce backlog function of the Linux kernel. This can lead to a denial of service. The problem arise...

UBUNTU-CVE-2024-50039

In the Linux kernel, the following vulnerability has been resolved: net/sched: accept TCASTAB only for root qdisc Most qdiscs maintain their backlog using qdiscpktlenskb on the assumption it is invariant between the enqueue and dequeue handlers. Unfortunately syzbot can crash a host rather easily...

DEBIAN-CVE-2024-49946

In the Linux kernel, the following vulnerability has been resolved: ppp: do not assume bh is held in pppchannelbridgeinput Networking receive path is usually handled from BH handler. However, some protocols need to acquire the socket lock, and packets might be stored in the socket backlog is the...

AZL-52605 CVE-2024-49946 affecting package kernel for versions less than 5.15.173.1-1

In the Linux kernel, the following vulnerability has been resolved: ppp: do not assume bh is held in pppchannelbridgeinput Networking receive path is usually handled from BH handler. However, some protocols need to acquire the socket lock, and packets might be stored in the socket backlog is the...

UBUNTU-CVE-2024-49946

In the Linux kernel, the following vulnerability has been resolved: ppp: do not assume bh is held in pppchannelbridgeinput Networking receive path is usually handled from BH handler. However, some protocols need to acquire the socket lock, and packets might be stored in the socket backlog is the...

CVE-2024-49946

CVE-2024-49946 affects the Linux kernel PPP stack. The issue arises in ppp_channel_bridge_input() when packets are backlogged to a socket owned by a user process and the code path can call sk_backlog_rcv()/__release_sock()/release_sock() in process context. This creates an inconsistent lock state...

PT-2024-33788

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.6.58 Description: A vulnerability has been resolved in the Linux kernel where the ppp channel bridge input function did not consider the case when the socket lock is acquired and packets are stored in the sock...

SUSE CVE-2024-46800

In the Linux kernel, the following vulnerability has been resolved: sch/netem: fix use after free in netemdequeue If netemdequeue enqueues packet to inner qdisc and that qdisc returns NETXMITSTOLEN. The packet is dropped but qdisctreereducebacklog is not called to update the parent's q.qlen,...

DEBIAN-CVE-2024-46800

In the Linux kernel, the following vulnerability has been resolved: sch/netem: fix use after free in netemdequeue If netemdequeue enqueues packet to inner qdisc and that qdisc returns NETXMITSTOLEN. The packet is dropped but qdisctreereducebacklog is not called to update the parent's q.qlen,...

AZL-49380 CVE-2024-46800 affecting package kernel for versions less than 5.15.167.1-1

In the Linux kernel, the following vulnerability has been resolved: sch/netem: fix use after free in netemdequeue If netemdequeue enqueues packet to inner qdisc and that qdisc returns NETXMITSTOLEN. The packet is dropped but qdisctreereducebacklog is not called to update the parent's q.qlen,...