CVE-2026-90075 net/sched: fq_codel: clamp default quantum and mtu

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqcodel: clamp default quantum and mtu fqcodelinit sets q-quantum = pschedmtuqdiscdevsch without clamping. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu return 0x80000000...

CVE-2026-90072

CVE-2026-90072 is a signed overflow vulnerability in the Linux kernel's net/sched: sfq (Stochastic Fairness Queuing) qdisc. In sfq_init(), the quantum value is set from psched_mtu(), which returns an unsigned value. A device with an extremely large MTU (e.g., a dummy device with max_mtu == 0 acce...

CVE-2026-90072 net/sched: sfq: clamp quantum to avoid signed overflow soft lockup

In the Linux kernel, the following vulnerability has been resolved: net/sched: sfq: clamp quantum to avoid signed overflow soft lockup sfqinit sets q-quantum = pschedmtuqdiscdevsch unsigned. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu return...

CVE-2026-90072 net/sched: sfq: clamp quantum to avoid signed overflow soft lockup

In the Linux kernel, the following vulnerability has been resolved: net/sched: sfq: clamp quantum to avoid signed overflow soft lockup sfqinit sets q-quantum = pschedmtuqdiscdevsch unsigned. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu return...

EUVD-2026-81933

In the Linux kernel, the following vulnerability has been resolved: net/sched: sfq: clamp quantum to avoid signed overflow soft lockup sfqinit sets q-quantum = pschedmtuqdiscdevsch unsigned. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu return...

CVE-2026-90058 net/sched: bound qdisc_pkt_len to prevent qdisc soft lockup

In the Linux kernel, the following vulnerability has been resolved: net/sched: bound qdiscpktlen to prevent qdisc soft lockup qdiscgetstab accepts a user-supplied size table, and qdisccalculatepktlen amplifies qdiscpktlen through the overhead, the size-table data u16, and sizelog up to...

EUVD-2026-81919

In the Linux kernel, the following vulnerability has been resolved: net/sched: bound qdiscpktlen to prevent qdisc soft lockup qdiscgetstab accepts a user-supplied size table, and qdisccalculatepktlen amplifies qdiscpktlen through the overhead, the size-table data u16, and sizelog up to...

CVE-2026-90058 net/sched: bound qdisc_pkt_len to prevent qdisc soft lockup

In the Linux kernel, the following vulnerability has been resolved: net/sched: bound qdiscpktlen to prevent qdisc soft lockup qdiscgetstab accepts a user-supplied size table, and qdisccalculatepktlen amplifies qdiscpktlen through the overhead, the size-table data u16, and sizelog up to...

CVE-2026-90058

CVE-2026-90058 is a Linux kernel vulnerability in the net/sched subsystem. The root cause is that qdisc_get_stab() accepts a user-supplied size table, and __qdisc_calculate_pkt_len() amplifies qdisc_pkt_len() through overhead, size-table data (u16), and size_log, allowing a crafted stab to set th...

CVE-2026-90053

CVE-2026-90053 is a vulnerability in the Linux kernel 's HTB qdisc (net/sched: sch_htb). The function htb_classify() follows filter-selected inner classes without bounding the traversal depth, so a self-referencing or cyclic inner-class u32 filter creates an infinite loop in the packet classifica...

EUVD-2026-81914

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhtb: limit htbclassify inner-class filter hops htbclassify follows each filter-selected inner class by switching to cl-filterlist, but never bounds the number of hops. A filter on an inner class can point back to...

CVE-2026-90053 net/sched: sch_htb: limit htb_classify inner-class filter hops

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhtb: limit htbclassify inner-class filter hops htbclassify follows each filter-selected inner class by switching to cl-filterlist, but never bounds the number of hops. A filter on an inner class can point back to...

CVE-2026-90053 net/sched: sch_htb: limit htb_classify inner-class filter hops

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhtb: limit htbclassify inner-class filter hops htbclassify follows each filter-selected inner class by switching to cl-filterlist, but never bounds the number of hops. A filter on an inner class can point back to...

CVE-2026-90072: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: sfq: clamp quantum to avoid signed overflow soft lockup sfqinit sets q-quantum = pschedmtuqdiscdevsch unsigned. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu return...

CVE-2026-90076: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: fq: add overflow bounds to quantum and initial quantum fqinit computes quantum = 2 pschedmtu and initialquantum = 10 pschedmtu with no overflow check. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU...

CVE-2026-90058: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: bound qdiscpktlen to prevent qdisc soft lockup qdiscgetstab accepts a user-supplied size table, and qdisccalculatepktlen amplifies qdiscpktlen through the overhead, the size-table data u16, and sizelog up to...

CVE-2026-90074: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqpie: clamp default quantum to avoid signed overflow fqpieinit sets q-quantum = pschedmtuqdiscdevsch without clamping. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu retu...

CVE-2026-90053: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhtb: limit htbclassify inner-class filter hops htbclassify follows each filter-selected inner class by switching to cl-filterlist, but never bounds the number of hops. A filter on an inner class can point back to...

CVE-2026-90075: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqcodel: clamp default quantum and mtu fqcodelinit sets q-quantum = pschedmtuqdiscdevsch without clamping. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu return 0x80000000...

CVE-2026-89968

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: reject unsolicited H2CData PDUs nvmettcphandleh2cdatapdu accepts an H2CData PDU after only checking that its TTAG is a valid in-range command index and that the command's data buffers are mapped. It never checks that t...