In the Linux kernel, the following vulnerability has been resolved: usb: xhci: Apply the link chain quirk on NEC isoc endpoints Two clearly different specimens of NEC uPD720200 (one with start/stop bug, one without) were seen to cause IOMMU faults after some Missed Service Errors. Faulting address is immediately after a transfer ring segment and patched dynamic debug messages revealed that the MSE was received when waiting for a TD near the end of that segment: [ 1.041954] xhci_hcd: Miss service interval error for slot 1 ep 2 expected TD DMA ffa08fe0 [ 1.042120] xhci_hcd: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0005 address=0xffa09000 flags=0x0000] [ 1.042146] xhci_hcd: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0005 address=0xffa09040 flags=0x0000] It gets even funnier if the next page is a ring segment accessible to the HC. Below, it reports MSE in segment at ff1e8000, plows through a zero-filled page at ff1e9000 and starts reporting events for TRBs in page at ff1ea000 every microframe, instead of jumping to seg ff1e6000. [ 7.041671] xhci_hcd: Miss service interval error for slot 1 ep 2 expected TD DMA ff1e8fe0 [ 7.041999] xhci_hcd: Miss service interval error for slot 1 ep 2 expected TD DMA ff1e8fe0 [ 7.042011] xhci_hcd: WARN: buffer overrun event for slot 1 ep 2 on endpoint [ 7.042028] xhci_hcd: All TDs skipped for slot 1 ep 2. Clear skip flag. [ 7.042134] xhci_hcd: WARN: buffer overrun event for slot 1 ep 2 on endpoint [ 7.042138] xhci_hcd: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 31 [ 7.042144] xhci_hcd: Looking for event-dma 00000000ff1ea040 trb-start 00000000ff1e6820 trb-end 00000000ff1e6820 [ 7.042259] xhci_hcd: WARN: buffer overrun event for slot 1 ep 2 on endpoint [ 7.042262] xhci_hcd: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 31 [ 7.042266] xhci_hcd: Looking for event-dma 00000000ff1ea050 trb-start 00000000ff1e6820 trb-end 00000000ff1e6820 At some point completion events change from Isoch Buffer Overrun to Short Packet and the HC finally finds cycle bit mismatch in ff1ec000. [ 7.098130] xhci_hcd: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 [ 7.098132] xhci_hcd: Looking for event-dma 00000000ff1ecc50 trb-start 00000000ff1e6820 trb-end 00000000ff1e6820 [ 7.098254] xhci_hcd: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 [ 7.098256] xhci_hcd: Looking for event-dma 00000000ff1ecc60 trb-start 00000000ff1e6820 trb-end 00000000ff1e6820 [ 7.098379] xhci_hcd: Overrun event on slot 1 ep 2 It's possible that data from the isochronous device were written to random buffers of pending TDs on other endpoints (either IN or OUT), other devices or even other HCs in the same IOMMU domain. Lastly, an error from a different USB device on another HC. Was it caused by the above? I don't know, but it may have been. The disk was working without any other issues and generated PCIe traffic to starve the NEC of upstream BW and trigger those MSEs. The two HCs shared one x1 slot by means of a commercial "PCIe splitter" board. [ 7.162604] usb 10-2: reset SuperSpeed USB device number 3 using xhci_hcd [ 7.178990] sd 9:0:0:0: [sdb] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=DRIVER_OK cmd_age=0s [ 7.179001] sd 9:0:0:0: [sdb] tag#0 CDB: opcode=0x28 28 00 04 02 ae 00 00 02 00 00 [ 7.179004] I/O error, dev sdb, sector 67284480 op 0x0:(READ) flags 0x80700 phys_seg 5 prio class 0 Fortunately, it appears that this ridiculous bug is avoided by setting the chain bit of Link TRBs on isochronous rings. Other ancient HCs are known which also expect the bit to be set and they ignore Link TRBs if it's not. Reportedly, 0.95 spec guaranteed that the bit is set. The bandwidth-starved NEC HC running a 32KB/uframe UVC endpoint reports tens of MSEs per second and runs into the bug within seconds. Chaining Link TRBs allows the same workload to run for many minutes, many times. No ne ---truncated---

The remote Ubuntu 25.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7594-1 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:

    - ARM32 architecture;

    - ARM64 architecture;

    - PowerPC architecture;

    - RISC-V architecture;

    - User-Mode Linux (UML);

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - Compute Acceleration Framework;

    - ACPI drivers;

    - Serial ATA and Parallel ATA drivers;

    - Drivers core;

    - Ublk userspace block driver;

    - Bluetooth drivers;

    - Bus devices;

    - TPM device driver;

    - Clock framework and drivers;

    - CPU frequency scaling framework;

    - Buffer Sharing and Synchronization framework;

    - DMA engine subsystem;

    - GPU drivers;

    - HID subsystem;

    - HSI subsystem;

    - I2C subsystem;

    - I3C subsystem;

    - IIO subsystem;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - MCB driver;

    - Multiple devices driver;

    - Media drivers;

    - MemoryStick subsystem;

    - Multifunction device drivers;

    - Microchip PCI driver;

    - Intel Management Engine Interface driver;

    - PCI Endpoint Test driver;

    - MTD block device drivers;

    - Network drivers;

    - Ethernet bonding driver;

    - Mellanox network drivers;

    - STMicroelectronics network drivers;

    - NTB driver;

    - NVME drivers;

    - PCI subsystem;

    - Synopsys DesignWare PCIe PMU;

    - Mellanox platform drivers;

    - PWM drivers;

    - Remote Processor subsystem;

    - S/390 drivers;

    - SCSI subsystem;

    - Samsung SoC drivers;

    - SPI subsystem;

    - GPIB drivers;

    - VideoCore services drivers;

    - Thermal drivers;

    - TTY drivers;

    - UFS subsystem;

    - Cadence USB3 driver;

    - ChipIdea USB driver;

    - USB Device Class drivers;

    - DesignWare USB3 driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - USB Type-C support driver;

    - Virtio Host (VHOST) subsystem;

    - Backlight driver;

    - Framebuffer layer;

    - W1 Dallas's 1-wire bus driver;

    - 9P distributed file system;

    - File systems infrastructure;

    - BTRFS file system;

    - Ext4 file system;

    - F2FS file system;

    - JFS file system;

    - Network file systems library;

    - Network file system (NFS) server daemon;

    - NTFS3 file system;

    - Overlay file system;

    - SMB network file system;

    - Ethernet bridge;

    - io_uring subsystem;

    - Perf events;

    - Memory management;

    - UProbes tracing;

    - Amateur Radio drivers;

    - SCTP protocol;

    - Network sockets;

    - RDMA verbs API;

    - BPF subsystem;

    - Kernel fork() syscall;

    - Hibernation control;

    - Scheduler infrastructure;

    - Tracing infrastructure;

    - Watch queue notification mechanism;

    - Vector I/O iterator library;

    - 802.1Q VLAN protocol;

    - 9P file system network protocol;

    - Asynchronous Transfer Mode (ATM) subsystem;

    - Networking core;

    - Distributed Switch Architecture;

    - Ethtool driver;

    - IPv4 networking;

    - IPv6 networking;

    - MAC80211 subsystem;

    - Management Component Transport Protocol (MCTP);

    - Multipath TCP;

    - Netfilter;

    - Open vSwitch;

    - Network traffic control;

    - TIPC protocol;

    - TLS protocol;

    - Wireless networking;

    - ALSA framework;

    - WCD audio codecs;

    - SoC Audio for Freescale CPUs drivers;

    - SoC Audio generic drivers;

    - Intel ASoC drivers;

    - QCOM ASoC drivers;

    - Virtio sound driver;

    - CPU Power monitoring subsystem; (CVE-2025-37806, CVE-2025-22084, CVE-2025-39688, CVE-2025-22030,     CVE-2025-37754, CVE-2025-37783, CVE-2025-37825, CVE-2025-37752, CVE-2025-22104, CVE-2025-40014,     CVE-2025-22103, CVE-2025-37874, CVE-2025-37773, CVE-2025-37741, CVE-2025-37763, CVE-2025-37859,     CVE-2025-37779, CVE-2025-23155, CVE-2025-23143, CVE-2025-37788, CVE-2025-22028, CVE-2024-58096,     CVE-2025-37842, CVE-2025-37854, CVE-2025-38637, CVE-2024-58097, CVE-2023-53034, CVE-2025-37797,     CVE-2025-37851, CVE-2025-37941, CVE-2025-37942, CVE-2025-37748, CVE-2025-37982, CVE-2025-22058,     CVE-2025-37781, CVE-2025-23130, CVE-2025-23149, CVE-2025-23146, CVE-2025-37809, CVE-2025-37801,     CVE-2025-22080, CVE-2025-23160, CVE-2025-37823, CVE-2025-37827, CVE-2025-39755, CVE-2025-22124,     CVE-2025-22033, CVE-2025-22075, CVE-2025-37850, CVE-2025-37757, CVE-2025-22060, CVE-2025-37979,     CVE-2025-22098, CVE-2025-39989, CVE-2025-37989, CVE-2025-37790, CVE-2025-37885, CVE-2025-37875,     CVE-2025-22066, CVE-2025-37975, CVE-2025-37819, CVE-2025-37755, CVE-2025-37794, CVE-2025-23148,     CVE-2025-22067, CVE-2025-22061, CVE-2025-22109, CVE-2025-37884, CVE-2025-37852, CVE-2025-37866,     CVE-2025-37872, CVE-2025-37751, CVE-2025-23156, CVE-2025-22065, CVE-2025-37837, CVE-2025-22069,     CVE-2025-37822, CVE-2025-22128, CVE-2025-22087, CVE-2025-22023, CVE-2025-22038, CVE-2025-22096,     CVE-2025-22076, CVE-2025-22045, CVE-2025-38049, CVE-2025-37870, CVE-2025-37939, CVE-2025-37865,     CVE-2025-37860, CVE-2025-37771, CVE-2025-23144, CVE-2025-22081, CVE-2025-39778, CVE-2025-23153,     CVE-2025-22036, CVE-2025-23154, CVE-2025-22101, CVE-2025-37808, CVE-2025-37772, CVE-2025-22070,     CVE-2025-37789, CVE-2025-22025, CVE-2025-22019, CVE-2025-37868, CVE-2025-22083, CVE-2025-22095,     CVE-2025-23161, CVE-2025-22027, CVE-2025-37843, CVE-2025-37985, CVE-2025-23132, CVE-2025-22073,     CVE-2025-37940, CVE-2025-23140, CVE-2025-37828, CVE-2025-22063, CVE-2025-22053, CVE-2025-37787,     CVE-2025-23152, CVE-2025-37840, CVE-2025-22118, CVE-2025-37981, CVE-2025-22111, CVE-2025-22091,     CVE-2025-37841, CVE-2025-23142, CVE-2025-37838, CVE-2025-37775, CVE-2025-23147, CVE-2025-22022,     CVE-2025-37745, CVE-2025-37785, CVE-2025-37821, CVE-2025-37988, CVE-2025-37986, CVE-2025-23138,     CVE-2025-37836, CVE-2025-37792, CVE-2025-23141, CVE-2025-23159, CVE-2025-38240, CVE-2025-37764,     CVE-2025-22120, CVE-2025-37881, CVE-2025-37777, CVE-2025-37987, CVE-2025-37811, CVE-2025-22032,     CVE-2025-22044, CVE-2025-37943, CVE-2025-37802, CVE-2025-37829, CVE-2025-37862, CVE-2025-38575,     CVE-2025-37799, CVE-2025-37882, CVE-2025-37812, CVE-2025-37765, CVE-2025-37813, CVE-2025-37980,     CVE-2025-37873, CVE-2025-37766, CVE-2025-37761, CVE-2025-37892, CVE-2025-22094, CVE-2025-22035,     CVE-2025-22055, CVE-2025-22100, CVE-2025-37816, CVE-2025-22062, CVE-2025-22110, CVE-2025-22088,     CVE-2025-23129, CVE-2025-38479, CVE-2025-37740, CVE-2025-23136, CVE-2025-37846, CVE-2025-23163,     CVE-2025-37977, CVE-2025-37879, CVE-2025-22082, CVE-2025-22046, CVE-2025-22050, CVE-2025-22126,     CVE-2025-37796, CVE-2025-37815, CVE-2025-22127, CVE-2025-22105, CVE-2025-22068, CVE-2025-22119,     CVE-2025-22089, CVE-2025-37858, CVE-2025-37826, CVE-2025-37945, CVE-2025-23157, CVE-2025-22054,     CVE-2025-37805, CVE-2025-37856, CVE-2025-37878, CVE-2025-37768, CVE-2025-22040, CVE-2025-37944,     CVE-2025-37774, CVE-2025-22117, CVE-2025-37888, CVE-2025-37857, CVE-2025-37791, CVE-2025-37817,     CVE-2025-22041, CVE-2025-37983, CVE-2025-22039, CVE-2025-37749, CVE-2025-22097, CVE-2025-37747,     CVE-2025-37762, CVE-2025-22114, CVE-2025-37831, CVE-2025-23133, CVE-2025-22020, CVE-2025-22085,     CVE-2025-37807, CVE-2025-22059, CVE-2025-22042, CVE-2025-22123, CVE-2025-22107, CVE-2025-37759,     CVE-2024-58094, CVE-2025-40114, CVE-2025-37810, CVE-2025-37833, CVE-2025-23134, CVE-2025-23151,     CVE-2025-37743, CVE-2025-22034, CVE-2025-37739, CVE-2025-37863, CVE-2025-39735, CVE-2025-39930,     CVE-2025-37847, CVE-2025-37803, CVE-2025-37786, CVE-2025-22112, CVE-2025-37830, CVE-2025-22108,     CVE-2025-37767, CVE-2025-37814, CVE-2025-37798, CVE-2025-22086, CVE-2025-37778, CVE-2024-58093,     CVE-2025-37848, CVE-2025-22024, CVE-2025-37776, CVE-2025-38104, CVE-2025-37938, CVE-2025-37861,     CVE-2025-23150, CVE-2025-22021, CVE-2025-22018, CVE-2025-23137, CVE-2025-37756, CVE-2025-37784,     CVE-2025-37769, CVE-2025-37820, CVE-2025-37758, CVE-2025-22047, CVE-2025-37844, CVE-2025-22093,     CVE-2025-23162, CVE-2025-22051, CVE-2025-22115, CVE-2025-37845, CVE-2025-22074, CVE-2025-37883,     CVE-2025-22116, CVE-2025-37824, CVE-2025-22052, CVE-2025-22090, CVE-2025-37750, CVE-2025-39728,     CVE-2025-23145, CVE-2025-22125, CVE-2025-37834, CVE-2025-37738, CVE-2025-37760, CVE-2025-22079,     CVE-2025-37877, CVE-2025-37849, CVE-2025-22026, CVE-2025-37886, CVE-2025-22043, CVE-2025-22122,     CVE-2025-37937, CVE-2025-22071, CVE-2025-37742, CVE-2025-37744, CVE-2025-22106, CVE-2025-38152,     CVE-2025-37869, CVE-2025-23135, CVE-2025-22056, CVE-2024-58095, CVE-2025-37853, CVE-2025-37770,     CVE-2025-22031, CVE-2025-23158, CVE-2025-22072, CVE-2025-22102, CVE-2025-40325, CVE-2025-22037,     CVE-2025-37876, CVE-2025-37864, CVE-2025-37867, CVE-2025-37855, CVE-2025-37984, CVE-2025-37839,     CVE-2025-23131, CVE-2025-22121, CVE-2025-22078, CVE-2025-37800, CVE-2025-37880, CVE-2025-37925,     CVE-2025-22113, CVE-2025-22064, CVE-2025-22057, CVE-2025-22092, CVE-2025-37780, CVE-2025-37887,     CVE-2025-22099, CVE-2025-37793, CVE-2025-37978, CVE-2025-37746)

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-935 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    nfsd: fix legacy client tracking initialization (CVE-2024-58092)

    In the Linux kernel, the following vulnerability has been resolved:

    keys: Fix UAF in key_put() (CVE-2025-21893)

    In the Linux kernel, the following vulnerability has been resolved:

    net: gso: fix ownership in __udp_gso_segment (CVE-2025-21926)

    In the Linux kernel, the following vulnerability has been resolved:

    xsk: fix an integer overflow in xp_create_and_assign_umem() (CVE-2025-21997)

    In the Linux kernel, the following vulnerability has been resolved:

    proc: fix UAF in proc_get_inode() (CVE-2025-21999)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/huge_memory: drop beyond-EOF folios with the right number of refs (CVE-2025-22000)

    In the Linux kernel, the following vulnerability has been resolved:

    netfs: Call `invalidate_cache` only if implemented (CVE-2025-22002)

    In the Linux kernel, the following vulnerability has been resolved:

    ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw(). (CVE-2025-22005)

    In the Linux kernel, the following vulnerability has been resolved:

    KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state (CVE-2025-22013)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/migrate: fix shmem xarray update during migration (CVE-2025-22015)

    In the Linux kernel, the following vulnerability has been resolved:

    devlink: fix xa_alloc_cyclic() error handling (CVE-2025-22017)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: socket: Lookup orig tuple for IPv6 SNAT (CVE-2025-22021)

    In the Linux kernel, the following vulnerability has been resolved:

    usb: xhci: Apply the link chain quirk on NEC isoc endpoints (CVE-2025-22022)

    In the Linux kernel, the following vulnerability has been resolved:

    usb: xhci: Don't skip on Stopped - Length Invalid (CVE-2025-22023)

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

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

ID	Name	Product	Family	Severity
240657	Ubuntu 25.04 : Linux kernel vulnerabilities (USN-7594-1)	Nessus	Ubuntu Local Security Checks	high
234339	Amazon Linux 2023 : bpftool, kernel6.12, kernel6.12-modules-extra (ALAS2023-2025-935)	Nessus	Amazon Linux Local Security Checks	medium

Detections

Analytics

CVE-2025-22022

medium

Tenable Plugins

high

medium