Ubuntu 25.04 : Linux kernel (Azure) vulnerabilities (USN-7721-1)

"The remote Ubuntu 25.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7721-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in th...

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: 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: 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...

kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc

A use-after-free vulnerability has been identified in the Linux kernel's HFSC Hierarchical Fair Service Curve queuing discipline when it is configured with NETEM Network Emulation as a child. This flaw can lead to a kernel panic or crash due to incorrect assumptions about the queue state...

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...

SUSE-SU-2025:20621-1 Security update for kernel-livepatch-MICRO-6-0-RT_Update_5

This update for kernel-livepatch-MICRO-6-0-RTUpdate5 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...

SUSE-SU-2025:20624-1 Security update for kernel-livepatch-MICRO-6-0-RT_Update_8

This update for kernel-livepatch-MICRO-6-0-RTUpdate8 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...

SUSE-SU-2025:20583-1 Security update for kernel-livepatch-MICRO-6-0-RT_Update_8

This update for kernel-livepatch-MICRO-6-0-RTUpdate8 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...

Security update for kernel-livepatch-MICRO-6-0-RT_Update_3

This update for kernel-livepatch-MICRO-6-0-RTUpdate3 fixes the following issues: CVE-2024-56664: bpf, sockmap: fix race between element replace and close bsc1235250 CVE-2025-37752: netsched: schsfq: move the limit validation bsc1245776 CVE-2025-37797: netsched: hfsc: Fix a UAF vulnerability in...

Security update for kernel-livepatch-MICRO-6-0-RT_Update_2

This update for kernel-livepatch-MICRO-6-0-RTUpdate2 fixes the following issues: CVE-2024-56664: bpf, sockmap: fix race between element replace and close bsc1235250 CVE-2025-37752: netsched: schsfq: move the limit validation bsc1245776 CVE-2025-37797: netsched: hfsc: Fix a UAF vulnerability in...

SUSE-SU-2025:20581-1 Security update for kernel-livepatch-MICRO-6-0-RT_Update_6

This update for kernel-livepatch-MICRO-6-0-RTUpdate6 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...

SUSE-SU-2025:20572-1 Security update for kernel-livepatch-MICRO-6-0_Update_5

This update for kernel-livepatch-MICRO-6-0Update5 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...

SUSE-SU-2025:20569-1 Security update for kernel-livepatch-MICRO-6-0_Update_6

This update for kernel-livepatch-MICRO-6-0Update6 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...

Security update for kernel-livepatch-MICRO-6-0_Update_2

This update for kernel-livepatch-MICRO-6-0Update2 fixes the following issues: CVE-2024-56664: bpf, sockmap: fix race between element replace and close bsc1235250 CVE-2025-37752: netsched: schsfq: move the limit validation bsc1245776 CVE-2025-37797: netsched: hfsc: Fix a UAF vulnerability in class...

Security update for kernel-livepatch-MICRO-6-0_Update_4

This update for kernel-livepatch-MICRO-6-0Update4 fixes the following issues: CVE-2024-56664: bpf, sockmap: fix race between element replace and close bsc1235250 CVE-2025-37752: netsched: schsfq: move the limit validation bsc1245776 CVE-2025-37797: netsched: hfsc: Fix a UAF vulnerability in class...

SUSE-SU-2025:20610-1 Security update for kernel-livepatch-MICRO-6-0_Update_2

This update for kernel-livepatch-MICRO-6-0Update2 fixes the following issues: - CVE-2024-56664: bpf, sockmap: fix race between element replace and close bsc1235250 - CVE-2025-37752: netsched: schsfq: move the limit validation bsc1245776 - CVE-2025-37797: netsched: hfsc: Fix a UAF vulnerability in...

SUSE-SU-2025:20576-1 Security update for kernel-livepatch-MICRO-6-0_Update_3

This update for kernel-livepatch-MICRO-6-0Update3 fixes the following issues: - CVE-2024-56664: bpf, sockmap: fix race between element replace and close bsc1235250 - CVE-2025-37752: netsched: schsfq: move the limit validation bsc1245776 - CVE-2025-37797: netsched: hfsc: Fix a UAF vulnerability in...

SUSE SLES15 Security Update : kernel (Live Patch 10 for SLE 15 SP6) (SUSE-SU-2025:02934-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02934-1 advisory. This update for the Linux Kernel 6.4.0-1506002347 fixes several issues. The following security issues were fixed: - CVE-2025-38494: HID: core:...