kernel: sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue()

A flaw was found in the HFSC queueing discipline implementation in the Linux kernel. When a packet is enqueued and the child qdisc's peek function is called before properly updating the HFSC queue's length and backlog counters, a race condition can occur. In some cases, the peek operation may...

Important: kernel-livepatch-6.1.134-150.224

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: schhfsc: Fix qlen accounting bug when using peek in hfscenqueue CVE-2025-38000 In the Linux kernel, the following vulnerability has been resolved: can: bcm: add missing rcu read protection for procfs content...

OESA-2025-1869 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: pfifotailenqueue: Drop new packet when sch-limit == 0 Expected behaviour: In case we reach scheduler's limit, pfifotailenqueue will drop a packet in scheduler's...

OESA-2025-1874 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: pfifotailenqueue: Drop new packet when sch-limit == 0 Expected behaviour: In case we reach scheduler's limit, pfifotailenqueue will drop a packet in scheduler's...

PT-2025-31074

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition can occur when agg is modified while other threads access it concurrently, potentially leading to a NULL dereference or a use-after-free. The issue arises from concurren...

CVE-2025-38115 net_sched: sch_sfq: fix a potential crash on gso_skb handling

In the Linux kernel, the following vulnerability has been resolved: netsched: schsfq: fix a potential crash on gsoskb handling SFQ has an assumption of always being able to queue at least one packet. However, after the blamed commit, sch-q.len can be inflated by packets in sch-gsoskb, and an...

PT-2025-27701

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A potential crash in the Linux kernel's net sched module has been resolved. The issue occurred in the sch sfq function, which has an assumption of always being able to queue at least o...

PT-2025-30120

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw in the networking scheduler where certain classful qdiscs may unexpectedly empty a child qdisc, leading to a use-after-free condition. This can occur whe...

Security update for the Linux Kernel

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2024-53141: netfilter: ipset: add missing range check in bitmapipuadt bsc1234381. CVE-2025-21700: net: sched: Disallow replacing of child qdisc from one parent to...

CLSA-2025-1750353839 kernel: Fix of 6 CVEs

pfifotailenqueue: Drop new packet when sch-limit == 0 CVE-2025-21702 - xfs: add bounds checking to xlogrecoverprocessdata CVE-2024-41014 - netfilter: validate user input for expected length CVE-2024-35896 - nfs: fix UAF in direct writes CVE-2024-26958 - Squashfs: check the inode number is not the...

SUSE-SU-2025:20413-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2023-52888: media: mediatek: vcodec: Only free buffer VA that is not NULL bsc1228557. - CVE-2024-46713: kabi fix for perf/aux: Fix AUX buffer...

SUSE-SU-2025:20408-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2023-52888: media: mediatek: vcodec: Only free buffer VA that is not NULL bsc1228557. - CVE-2024-46713: kabi fix for perf/aux: Fix AUX buffer...

CLSA-2025-1749568993 kernel: Fix of 24 CVEs

vsock: Keep the binding until socket destruction CVE-2025-21756 - mt76: fix use-after-free by removing a non-RCU wcid pointer CVE-2022-49328 - bpf, testrun: Fix alignment problem in bpfprogtestrunskb CVE-2022-49840 - ASoC: core: Fix use-after-free in sndsocexit CVE-2022-49842 - net: sched: Fix...

SUSE CVE-2025-38000

In the Linux kernel, the following vulnerability has been resolved: schhfsc: Fix qlen accounting bug when using peek in hfscenqueue When enqueuing the first packet to an HFSC class, hfscenqueue calls the child qdisc's peek operation before incrementing sch-q.qlen and sch-qstats.backlog. If the...

DEBIAN-CVE-2025-38000

In the Linux kernel, the following vulnerability has been resolved: schhfsc: Fix qlen accounting bug when using peek in hfscenqueue When enqueuing the first packet to an HFSC class, hfscenqueue calls the child qdisc's peek operation before incrementing sch-q.qlen and sch-qstats.backlog. If the...

AZL-63684 CVE-2025-38000 affecting package kernel for versions less than 6.6.96.1-1

In the Linux kernel, the following vulnerability has been resolved: schhfsc: Fix qlen accounting bug when using peek in hfscenqueue When enqueuing the first packet to an HFSC class, hfscenqueue calls the child qdisc's peek operation before incrementing sch-q.qlen and sch-qstats.backlog. If the...

UBUNTU-CVE-2025-38000

In the Linux kernel, the following vulnerability has been resolved: schhfsc: Fix qlen accounting bug when using peek in hfscenqueue When enqueuing the first packet to an HFSC class, hfscenqueue calls the child qdisc's peek operation before incrementing sch-q.qlen and sch-qstats.backlog. If the...

CVE-2025-38000 sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue()

In the Linux kernel, the following vulnerability has been resolved: schhfsc: Fix qlen accounting bug when using peek in hfscenqueue When enqueuing the first packet to an HFSC class, hfscenqueue calls the child qdisc's peek operation before incrementing sch-q.qlen and sch-qstats.backlog. If the...

CVE-2025-38000 sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue()

In the Linux kernel, the following vulnerability has been resolved: schhfsc: Fix qlen accounting bug when using peek in hfscenqueue When enqueuing the first packet to an HFSC class, hfscenqueue calls the child qdisc's peek operation before incrementing sch-q.qlen and sch-qstats.backlog. If the...

SUSE CVE-2025-37915

In the Linux kernel, the following vulnerability has been resolved: netsched: drr: Fix double list add in class with netem as child qdisc As described in Gerrard's report 1, there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of drr,...