SUSE SLES15 Security Update : kernel (Live Patch 24 for SLE 15 SP5) (SUSE-SU-2025:03194-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03194-1 advisory. This update for the Linux Kernel 5.14.21-1505005597 fixes several issues. The following security issues were fixed: - CVE-2025-21999: proc: fi...

SUSE-SU-2025:03138-1 Security update for the Linux Kernel (Live Patch 62 for SLE 12 SP5)

This update for the Linux Kernel 4.12.14-122234 fixes several issues. The following security issues were fixed: - CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF bsc1237930. - CVE-2025-38000: schhfsc: Fix qlen accounting bug when using peek in hfscenqueue bsc1245775. - CVE-2025-38212:...

kernel: net/sched: Always pass notifications when child class becomes empty

A use-after-free UAF vulnerability was found in the Linux kernel's net/sched subsystem, specifically in the Credit-Based Shaper CBS qdisc implementation schcbs. The vulnerability occurs because the CBS qdisc's reset function qdiscresetqueue only resets its internal queue but fails to reset its...

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...

Security update for kernel-livepatch-MICRO-6-0_Update_7

This update for kernel-livepatch-MICRO-6-0Update7 fixes the following issues: CVE-2025-37752: netsched: schsfq: move the limit validation bsc1245776 CVE-2025-37797: netsched: hfsc: Fix a UAF vulnerability in class handling bsc1245793 CVE-2025-21702: pfifotailenqueue: Drop new packet when sch-limi...

kernel: net_sched: hfsc: Fix a UAF vulnerability in class handling

In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Fix a UAF vulnerability in class handling This patch fixes a Use-After-Free vulnerability in the HFSC qdisc class handling. The issue occurs due to a time-of-check/time-of-use condition in hfscchangeclass when...

UBUNTU-CVE-2025-38001

In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Address reentrant enqueue adding class to eltree twice Savino says: "We are writing to report that this recent patch 141d34391abbb315d68556b7c67ad97885407547 1 can be bypassed, and a UAF can still occur when HFSC ...