CVE-2025-38193

CVE-2025-38193 affects the Linux kernel net_sched SFQ (sch_sfq). The issue is a missing range check on perturb_period, which can enable a race condition; patches fix perturb_period overflow/invalid values. Public demonstrations show negative, oversized, and a valid perturb value (2000000), with t...

CVE-2025-38193 net_sched: sch_sfq: reject invalid perturb period

In the Linux kernel, the following vulnerability has been resolved: netsched: schsfq: reject invalid perturb period Gerrard Tai reported that SFQ perturbperiod has no range check yet, and this can be used to trigger a race condition fixed in a separate patch. We want to make sure ctl-perturbperio...

AZL-64580 CVE-2025-38115 affecting package kernel for versions less than 6.6.96.1-1

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...

DEBIAN-CVE-2025-38115

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...

CVE-2025-38115

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...

CVE-2025-38108

In the Linux kernel, the following vulnerability has been resolved: netsched: red: fix a race in redchange Gerrard Tai reported a race condition in RED, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 1: lock root 2: qdisctreeflushbacklog 3: unlock root | |...

CVE-2025-38107

In the Linux kernel, the following vulnerability has been resolved: netsched: ets: fix a race in etsqdiscchange Gerrard Tai reported a race condition in ETS, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 1: lock root 2: qdisctreeflushbacklog 3: unlock roo...

UBUNTU-CVE-2025-38108

In the Linux kernel, the following vulnerability has been resolved: netsched: red: fix a race in redchange Gerrard Tai reported a race condition in RED, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 1: lock root 2: qdisctreeflushbacklog 3: unlock root | |...

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...

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...

CVE-2025-38108 net_sched: red: fix a race in __red_change()

In the Linux kernel, the following vulnerability has been resolved: netsched: red: fix a race in redchange Gerrard Tai reported a race condition in RED, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 1: lock root 2: qdisctreeflushbacklog 3: unlock root | |...

CVE-2025-38107

CVE-2025-38107: In the Linux kernel, a race in net_sched:ets (ets_qdisc_change) was fixed. The race occurs when a SFQ perturb timer fires at an inopportune moment, enabling underflow of a parent qlen during qdisc operations. The corrective action is to purge the qdisc with qdisc_purge_queue() bef...

CVE-2025-38107 net_sched: ets: fix a race in ets_qdisc_change()

In the Linux kernel, the following vulnerability has been resolved: netsched: ets: fix a race in etsqdiscchange Gerrard Tai reported a race condition in ETS, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 1: lock root 2: qdisctreeflushbacklog 3: unlock roo...

Linux Kernel Security Vulnerabilities

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 mishandling of the schsfq queue, which could lead to null pointer dereferencing...

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-2025-27694

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A race condition has been identified in the Linux kernel's RED Random Early Detection component. This issue occurs when the SFQ Stochastic Fairness Queuing perturb timer fires at an...

CVE-2025-38083 net_sched: prio: fix a race in prio_tune()

In the Linux kernel, the following vulnerability has been resolved: netsched: prio: fix a race in priotune Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 1: lock root 2: qdisctreeflushbacklog 3: unlock root | ...

SUSE-SU-2025:01950-1 Security update for the Linux Kernel (Live Patch 29 for SLE 15 SP4)

This update for the Linux Kernel 5.14.21-15040024128 fixes several issues. The following security issues were fixed: - CVE-2022-49080: mm/mempolicy: fix mpolnew leak in sharedpolicyreplace bsc1238324. - CVE-2024-57996: netsched: schsfq: do not allow 1 packet limit bsc1239077...

Security update for the Linux Kernel (Live Patch 8 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-1506002338 fixes several issues. The following security issues were fixed: CVE-2025-21680: pktgen: Avoid out-of-bounds access in getimixentries bsc1236701. CVE-2024-58013: Bluetooth: MGMT: Fix slab-use-after-free Read in mgmtremoveadvmonitorsync bsc1239096...

SUSE-SU-2025:01922-1 Security update for the Linux Kernel (Live Patch 34 for SLE 15 SP4)

This update for the Linux Kernel 5.14.21-15040024144 fixes several issues. The following security issues were fixed: - CVE-2022-49080: mm/mempolicy: fix mpolnew leak in sharedpolicyreplace bsc1238324. - CVE-2024-57996: netsched: schsfq: do not allow 1 packet limit bsc1239077...