In the Linux kernel, the following vulnerability has been resolved: rcu/nocb: Fix rcuog wake-up from offline softirq After a CPU has set itself offline and before it eventually calls rcutree_report_cpu_dead(), there are still opportunities for callbacks to be enqueued, for example from a softirq. When that happens on NOCB, the rcuog wake-up is deferred through an IPI to an online CPU in order not to call into the scheduler and risk arming the RT-bandwidth after hrtimers have been migrated out and disabled. But performing a synchronized IPI from a softirq is buggy as reported in the following scenario: WARNING: CPU: 1 PID: 26 at kernel/smp.c:633 smp_call_function_single Modules linked in: rcutorture torture CPU: 1 UID: 0 PID: 26 Comm: migration/1 Not tainted 6.11.0-rc1-00012-g9139f93209d1 #1 Stopper: multi_cpu_stop+0x0/0x320 <- __stop_cpus+0xd0/0x120 RIP: 0010:smp_call_function_single <IRQ> swake_up_one_online __call_rcu_nocb_wake __call_rcu_common ? rcu_torture_one_read call_timer_fn __run_timers run_timer_softirq handle_softirqs irq_exit_rcu ? tick_handle_periodic sysvec_apic_timer_interrupt </IRQ> Fix this with forcing deferred rcuog wake up through the NOCB timer when the CPU is offline. The actual wake up will happen from rcutree_report_cpu_dead().

The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7386-1 advisory.

    Michael Randrianantenaina discovered that the Bluetooth driver in the Linux Kernel contained an improper     access control vulnerability. A nearby attacker could use this to connect a rougue device and possibly     execute arbitrary code. (CVE-2024-8805)

    Attila Szsz discovered that the HFS+ file system implementation in the Linux Kernel contained a heap     overflow vulnerability. An attacker could use a specially crafted file system image that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2025-0927)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - ARM32 architecture;

    - ARM64 architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - ACPI drivers;

    - Drivers core;

    - ATA over ethernet (AOE) driver;

    - Network block device driver;

    - Ublk userspace block driver;

    - Compressed RAM block device driver;

    - TPM device driver;

    - CPU frequency scaling framework;

    - Hardware crypto device drivers;

    - DAX dirext access to differentiated memory framework;

    - ARM SCMI message protocol;

    - EFI core;

    - GPU drivers;

    - HID subsystem;

    - I2C subsystem;

    - I3C subsystem;

    - IIO subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - Mailbox framework;

    - Media drivers;

    - Ethernet bonding driver;

    - Network drivers;

    - Mellanox network drivers;

    - STMicroelectronics network drivers;

    - NTB driver;

    - Virtio pmem driver;

    - Parport drivers;

    - PCI subsystem;

    - Alibaba DDR Sub-System Driveway PMU driver;

    - Pin controllers subsystem;

    - x86 platform drivers;

    - Powercap sysfs driver;

    - Remote Processor subsystem;

    - SCSI subsystem;

    - SuperH / SH-Mobile drivers;

    - Direct Digital Synthesis drivers;

    - Thermal drivers;

    - TTY drivers;

    - UFS subsystem;

    - USB Device Class drivers;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - TI TPS6598x USB Power Delivery controller driver;

    - vDPA drivers;

    - Virtio Host (VHOST) subsystem;

    - Framebuffer layer;

    - AFS file system;

    - BTRFS file system;

    - File systems infrastructure;

    - Ceph distributed file system;

    - Ext4 file system;

    - F2FS file system;

    - JFS file system;

    - Network file systems library;

    - Network file system (NFS) client;

    - Network file system (NFS) server daemon;

    - NILFS2 file system;

    - NTFS3 file system;

    - SMB network file system;

    - BPF subsystem;

    - Network file system (NFS) superblock;

    - Virtio network driver;

    - Network traffic control;

    - Network sockets;

    - TCP network protocol;

    - User-space API (UAPI);

    - io_uring subsystem;

    - Perf events;

    - Kernel thread helper (kthread);

    - Padata parallel execution mechanism;

    - RCU subsystem;

    - Arbitrary resource management;

    - Static call mechanism;

    - Timer subsystem;

    - Tracing infrastructure;

    - Maple Tree data structure library;

    - Memory management;

    - Bluetooth subsystem;

    - Ethernet bridge;

    - CAN network layer;

    - Networking core;

    - Distributed Switch Architecture;

    - IPv4 networking;

    - IPv6 networking;

    - MAC80211 subsystem;

    - IEEE 802.15.4 subsystem;

    - Multipath TCP;

    - NCSI (Network Controller Sideband Interface) driver;

    - Netfilter;

    - Netlink;

    - RxRPC session sockets;

    - SCTP protocol;

    - TIPC protocol;

    - Unix domain sockets;

    - Wireless networking;

    - eXpress Data Path;

    - AudioScience HPI driver;

    - KVM core; (CVE-2024-49952, CVE-2024-49920, CVE-2024-49945, CVE-2024-50180, CVE-2024-49944,     CVE-2024-49987, CVE-2024-50148, CVE-2024-49959, CVE-2024-50063, CVE-2024-50083, CVE-2024-49878,     CVE-2024-49870, CVE-2024-49863, CVE-2024-49921, CVE-2024-49992, CVE-2024-47691, CVE-2024-49913,     CVE-2024-47712, CVE-2024-49948, CVE-2024-49976, CVE-2024-50085, CVE-2024-49891, CVE-2024-56614,     CVE-2024-47713, CVE-2024-47703, CVE-2024-50191, CVE-2024-50087, CVE-2024-49958, CVE-2024-49868,     CVE-2024-49922, CVE-2024-49960, CVE-2024-50019, CVE-2024-47749, CVE-2024-49996, CVE-2024-47677,     CVE-2024-50065, CVE-2024-47744, CVE-2024-49968, CVE-2024-49985, CVE-2024-47752, CVE-2024-50017,     CVE-2024-50183, CVE-2024-47709, CVE-2024-49938, CVE-2024-49876, CVE-2024-49893, CVE-2024-50134,     CVE-2024-49972, CVE-2024-49934, CVE-2024-50015, CVE-2024-49856, CVE-2024-49853, CVE-2024-47711,     CVE-2024-49949, CVE-2024-50026, CVE-2024-47681, CVE-2024-50000, CVE-2024-50189, CVE-2024-47716,     CVE-2024-47723, CVE-2024-50044, CVE-2024-50179, CVE-2024-49871, CVE-2024-50008, CVE-2024-49955,     CVE-2024-50007, CVE-2024-47695, CVE-2024-49889, CVE-2024-49954, CVE-2024-49894, CVE-2024-50014,     CVE-2024-47731, CVE-2024-50055, CVE-2024-50098, CVE-2024-49930, CVE-2024-47684, CVE-2024-47705,     CVE-2024-50029, CVE-2024-49901, CVE-2024-47689, CVE-2024-50022, CVE-2024-50009, CVE-2024-49937,     CVE-2024-50197, CVE-2024-49911, CVE-2024-50076, CVE-2024-50002, CVE-2024-50077, CVE-2024-47679,     CVE-2024-50025, CVE-2024-50069, CVE-2024-50101, CVE-2024-49942, CVE-2024-49986, CVE-2024-50012,     CVE-2024-49858, CVE-2024-49884, CVE-2024-50201, CVE-2024-47701, CVE-2024-49994, CVE-2024-49897,     CVE-2024-47687, CVE-2024-47751, CVE-2024-50001, CVE-2024-50117, CVE-2024-49909, CVE-2024-50086,     CVE-2024-50064, CVE-2024-50088, CVE-2024-50005, CVE-2024-50184, CVE-2024-49882, CVE-2024-49936,     CVE-2024-49933, CVE-2024-49995, CVE-2024-47704, CVE-2024-50066, CVE-2024-49898, CVE-2024-50068,     CVE-2024-50192, CVE-2024-53104, CVE-2024-49860, CVE-2024-47741, CVE-2024-50039, CVE-2024-47699,     CVE-2024-49861, CVE-2024-49969, CVE-2024-49950, CVE-2024-50194, CVE-2024-49929, CVE-2024-50006,     CVE-2024-49997, CVE-2024-49983, CVE-2024-47710, CVE-2024-50200, CVE-2024-47692, CVE-2024-47748,     CVE-2024-49855, CVE-2024-50182, CVE-2024-47706, CVE-2024-50188, CVE-2024-47732, CVE-2024-47707,     CVE-2024-50048, CVE-2024-50058, CVE-2024-49912, CVE-2024-49966, CVE-2024-49852, CVE-2024-47753,     CVE-2024-50202, CVE-2024-50062, CVE-2024-50056, CVE-2024-49946, CVE-2024-49902, CVE-2024-50033,     CVE-2024-47750, CVE-2024-50021, CVE-2024-49939, CVE-2024-50072, CVE-2024-49851, CVE-2024-49928,     CVE-2024-50061, CVE-2024-49885, CVE-2024-50047, CVE-2024-47672, CVE-2024-47734, CVE-2024-47714,     CVE-2024-49886, CVE-2024-47730, CVE-2024-47697, CVE-2024-49973, CVE-2024-47718, CVE-2024-49862,     CVE-2024-49963, CVE-2024-49881, CVE-2024-53165, CVE-2024-49998, CVE-2024-47757, CVE-2024-49982,     CVE-2024-50186, CVE-2024-50016, CVE-2024-47675, CVE-2024-50090, CVE-2024-49917, CVE-2024-50031,     CVE-2024-50093, CVE-2024-49859, CVE-2024-49890, CVE-2024-47670, CVE-2024-49919, CVE-2024-53156,     CVE-2024-49924, CVE-2024-50078, CVE-2024-49864, CVE-2024-49962, CVE-2024-47720, CVE-2024-49874,     CVE-2024-41016, CVE-2024-49991, CVE-2024-47726, CVE-2024-50171, CVE-2024-47682, CVE-2024-49865,     CVE-2024-49988, CVE-2024-49903, CVE-2024-50035, CVE-2024-50229, CVE-2024-50075, CVE-2024-50195,     CVE-2024-49947, CVE-2024-49900, CVE-2024-50040, CVE-2024-50176, CVE-2024-47686, CVE-2024-49978,     CVE-2024-49923, CVE-2024-50199, CVE-2024-49999, CVE-2024-50070, CVE-2024-49953, CVE-2024-47733,     CVE-2024-49888, CVE-2024-49977, CVE-2024-50080, CVE-2024-49905, CVE-2024-47737, CVE-2024-49961,     CVE-2024-50030, CVE-2024-49951, CVE-2024-49892, CVE-2024-50096, CVE-2024-47735, CVE-2024-47673,     CVE-2024-56663, CVE-2024-49981, CVE-2024-50049, CVE-2024-50193, CVE-2024-49957, CVE-2024-47742,     CVE-2024-49880, CVE-2024-49965, CVE-2024-49927, CVE-2024-47690, CVE-2024-50057, CVE-2024-50073,     CVE-2024-49931, CVE-2024-49875, CVE-2024-50041, CVE-2024-47700, CVE-2024-47719, CVE-2024-56582,     CVE-2024-47738, CVE-2024-47754, CVE-2024-49850, CVE-2024-47678, CVE-2024-49935, CVE-2024-47739,     CVE-2024-50028, CVE-2024-47727, CVE-2024-47728, CVE-2024-50084, CVE-2024-50095, CVE-2024-50175,     CVE-2024-50198, CVE-2024-47702, CVE-2024-50187, CVE-2024-50032, CVE-2024-50074, CVE-2024-50020,     CVE-2024-53144, CVE-2024-50233, CVE-2024-47698, CVE-2024-49879, CVE-2024-49896, CVE-2024-47747,     CVE-2024-49877, CVE-2024-50046, CVE-2024-49866, CVE-2024-47740, CVE-2024-50042, CVE-2024-50060,     CVE-2024-49925, CVE-2024-50013, CVE-2024-49867, CVE-2024-47685, CVE-2024-47743, CVE-2024-49883,     CVE-2024-53170, CVE-2024-50038, CVE-2024-47756, CVE-2024-47696, CVE-2024-49980, CVE-2024-50185,     CVE-2024-47693, CVE-2024-49915, CVE-2024-49914, CVE-2024-49907, CVE-2024-49989, CVE-2024-50196,     CVE-2024-50027, CVE-2024-47745, CVE-2024-50045, CVE-2024-50024, CVE-2024-49918, CVE-2024-49975,     CVE-2024-49974, CVE-2024-50082, CVE-2024-49895, CVE-2024-47671, CVE-2024-50059, CVE-2024-50099,     CVE-2024-50023, CVE-2024-47688, CVE-2024-49926, CVE-2024-50036)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7383-1 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 the following subsystems:

    - ARM64 architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Drivers core;

    - Ublk userspace block driver;

    - Compressed RAM block device driver;

    - CPU frequency scaling framework;

    - DAX dirext access to differentiated memory framework;

    - GPU drivers;

    - HID subsystem;

    - I3C subsystem;

    - IIO subsystem;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - Network drivers;

    - NTB driver;

    - Virtio pmem driver;

    - Parport drivers;

    - Pin controllers subsystem;

    - SCSI subsystem;

    - SuperH / SH-Mobile drivers;

    - Direct Digital Synthesis drivers;

    - Thermal drivers;

    - TTY drivers;

    - UFS subsystem;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - TI TPS6598x USB Power Delivery controller driver;

    - Framebuffer layer;

    - BTRFS file system;

    - Ext4 file system;

    - F2FS file system;

    - Network file system (NFS) client;

    - NILFS2 file system;

    - NTFS3 file system;

    - SMB network file system;

    - BPF subsystem;

    - Network file system (NFS) superblock;

    - Network traffic control;

    - Network sockets;

    - User-space API (UAPI);

    - io_uring subsystem;

    - Kernel thread helper (kthread);

    - RCU subsystem;

    - Timer subsystem;

    - Maple Tree data structure library;

    - Memory management;

    - Bluetooth subsystem;

    - Ethernet bridge;

    - Networking core;

    - IPv4 networking;

    - Multipath TCP;

    - Netfilter;

    - Netlink;

    - Unix domain sockets;

    - Wireless networking;

    - eXpress Data Path; (CVE-2024-50182, CVE-2024-50020, CVE-2024-50060, CVE-2024-50074, CVE-2024-50193,     CVE-2024-50117, CVE-2024-50201, CVE-2024-50033, CVE-2024-50056, CVE-2024-50026, CVE-2024-50059,     CVE-2024-50041, CVE-2024-50083, CVE-2024-50038, CVE-2024-50229, CVE-2024-50028, CVE-2024-50183,     CVE-2024-50196, CVE-2024-50029, CVE-2024-50093, CVE-2024-50188, CVE-2024-50025, CVE-2024-50200,     CVE-2024-50068, CVE-2024-49920, CVE-2024-50198, CVE-2024-50035, CVE-2024-50042, CVE-2024-50023,     CVE-2024-50047, CVE-2024-56582, CVE-2024-50090, CVE-2024-50062, CVE-2024-50073, CVE-2024-50063,     CVE-2024-50098, CVE-2024-50197, CVE-2024-50040, CVE-2024-50180, CVE-2024-53170, CVE-2024-50087,     CVE-2024-50031, CVE-2024-50202, CVE-2024-50058, CVE-2024-50186, CVE-2024-50134, CVE-2024-50194,     CVE-2024-50075, CVE-2024-50046, CVE-2024-50078, CVE-2024-50066, CVE-2024-53156, CVE-2024-49893,     CVE-2024-50021, CVE-2024-47711, CVE-2024-47726, CVE-2024-50024, CVE-2024-49865, CVE-2024-50064,     CVE-2024-50049, CVE-2024-50171, CVE-2024-50019, CVE-2024-50077, CVE-2024-50199, CVE-2024-50072,     CVE-2024-50069, CVE-2024-50048, CVE-2024-49972, CVE-2024-53165, CVE-2024-50022, CVE-2024-50084,     CVE-2024-50185, CVE-2024-50055, CVE-2024-50187, CVE-2024-50009, CVE-2024-50082, CVE-2024-50085,     CVE-2024-50095, CVE-2024-50195, CVE-2024-50080, CVE-2024-50076, CVE-2024-50088, CVE-2024-50039,     CVE-2024-50044, CVE-2024-50030, CVE-2024-49968, CVE-2024-50148, CVE-2024-50192, CVE-2024-50032,     CVE-2024-50061, CVE-2024-50233, CVE-2024-50099, CVE-2024-49921, CVE-2024-50184, CVE-2024-50065,     CVE-2024-49914, CVE-2024-50027, CVE-2024-50070, CVE-2024-50086, CVE-2024-50189, CVE-2024-56614,     CVE-2024-50057, CVE-2024-50096, CVE-2024-50045, CVE-2024-50036, CVE-2024-56663, CVE-2024-50191,     CVE-2024-50101)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: rcu/nocb: Fix rcuog wake-up from     offline softirq After a CPU has set itself offline and before it eventually calls     rcutree_report_cpu_dead(), there are still opportunities for callbacks to be enqueued, for example from a     softirq. When that happens on NOCB, the rcuog wake-up is deferred through an IPI to an online CPU in order     not to call into the scheduler and risk arming the RT-bandwidth after hrtimers have been migrated out and     disabled. But performing a synchronized IPI from a softirq is buggy as reported in the following scenario:
    WARNING: CPU: 1 PID: 26 at kernel/smp.c:633 smp_call_function_single Modules linked in: rcutorture torture     CPU: 1 UID: 0 PID: 26 Comm: migration/1 Not tainted 6.11.0-rc1-00012-g9139f93209d1 #1 Stopper:
    multi_cpu_stop+0x0/0x320 <- __stop_cpus+0xd0/0x120 RIP: 0010:smp_call_function_single <IRQ>     swake_up_one_online __call_rcu_nocb_wake __call_rcu_common ? rcu_torture_one_read call_timer_fn
    __run_timers run_timer_softirq handle_softirqs irq_exit_rcu ? tick_handle_periodic     sysvec_apic_timer_interrupt </IRQ> Fix this with forcing deferred rcuog wake up through the NOCB timer     when the CPU is offline. The actual wake up will happen from rcutree_report_cpu_dead(). (CVE-2024-50032)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
233674	Ubuntu 24.04 LTS : Linux kernel (OEM) vulnerabilities (USN-7386-1)	Nessus	Ubuntu Local Security Checks	critical
233469	Ubuntu 22.04 LTS / 24.04 LTS : Linux kernel vulnerabilities (USN-7383-1)	Nessus	Ubuntu Local Security Checks	high
230452	Linux Distros Unpatched Vulnerability : CVE-2024-50032	Nessus	Misc.	medium

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