CVE-2025-38413 — virtio-net: xsk: rx: fix the frame's length check

Affected: Linux

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

virtio-net: xsk: rx: fix the frame's length check

When calling buf_to_xdp, the len argument is the frame data's length without virtio header's length (vi->hdr_len). We check that len with

xsk_pool_get_rx_frame_size() + vi->hdr_len

to ensure the provided len does not larger than the allocated chunk size. The additional vi->hdr_len is because in virtnet_add_recvbuf_xsk, we use part of XDP_PACKET_HEADROOM for virtio header and ask the vhost to start placing data from

hard_start + XDP_PACKET_HEADROOM - vi->hdr_len not hard_start + XDP_PACKET_HEADROOM

But the first buffer has virtio_header, so the maximum frame's length in the first buffer can only be

xsk_pool_get_rx_frame_size() not xsk_pool_get_rx_frame_size() + vi->hdr_len

like in the current check.

This commit adds an additional argument to buf_to_xdp differentiate between the first buffer and other ones to correctly calculate the maximum frame's length.

USN-7833-1 — linux, linux-aws, linux-gcp, linux-oem-6.14, linux-oracle, linux-oracle-6.14, linux-raspi, linux-realtime vulnerabiliti…

Affected: Ubuntu:24.04:LTS: linux-oem-6.14, Ubuntu:24.04:LTS: linux-oracle-6.14

Oleksii Oleksenko, Cedric Fournet, Jana Hofmann, Boris Köpf, Stavros Volos, and Flavien Solt discovered that some AMD processors may allow an attacker to infer data from previous stores, potentially resulting in the leakage of privileged information. A local attacker could possibly use this to expose sensitive information. (CVE-2024-36350, CVE-2024-36357)

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; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86 architecture; - ACPI drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - ATA over ethernet (AOE) driver; - Ublk userspace block driver; - Bus devices; - DMA engine subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - Cirrus firmware drivers; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - I2C subsystem; - InfiniBand drivers; - Input Device (Miscellaneous) drivers; - Multiple devices driver; - Media drivers; - TI TPS6594 PFSM driver; - MMC subsystem; - MTD block device drivers; - Network drivers; - NVME drivers; - x86 platform drivers; - RapidIO drivers; - Voltage and Current Regulator drivers; - Remote Processor subsystem; - S/390 drivers; - SCSI subsystem; - TCM subsystem; - Trusted Execution Environment drivers; - TTY drivers; - ChipIdea USB dr…

Most recent entries from all

CVE-2025-38413 — virtio-net: xsk: rx: fix the frame's length check

USN-7833-1 — linux, linux-aws, linux-gcp, linux-oem-6.14, linux-oracle, linux-oracle-6.14, linux-raspi, linux-realtime vulnerabiliti…