CVE-2024-57843— virtio-net: fix overflow inside virtnet_rq_alloc
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I. Basic Information for CVE-2024-57843
Vulnerability Information
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Vulnerability Title
virtio-net: fix overflow inside virtnet_rq_alloc
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: virtio-net: fix overflow inside virtnet_rq_alloc When the frag just got a page, then may lead to regression on VM. Specially if the sysctl net.core.high_order_alloc_disable value is 1, then the frag always get a page when do refill. Which could see reliable crashes or scp failure (scp a file 100M in size to VM). The issue is that the virtnet_rq_dma takes up 16 bytes at the beginning of a new frag. When the frag size is larger than PAGE_SIZE, everything is fine. However, if the frag is only one page and the total size of the buffer and virtnet_rq_dma is larger than one page, an overflow may occur. The commit f9dac92ba908 ("virtio_ring: enable premapped mode whatever use_dma_api") introduced this problem. And we reverted some commits to fix this in last linux version. Now we try to enable it and fix this bug directly. Here, when the frag size is not enough, we reduce the buffer len to fix this problem.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于virtio-net模块在virtnet_rq_alloc中可能导致溢出，影响虚拟机性能。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-57843
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Same Patch Batch · Linux · 2025-01-11 · 67 CVEs total
| CVE-2024-57792 | power: supply: gpio-charger: Fix set charge current limits | |
| CVE-2024-57878 | arm64: ptrace: fix partial SETREGSET for NT_ARM_FPMR | |
| CVE-2024-57877 | arm64: ptrace: fix partial SETREGSET for NT_ARM_POE | |
| CVE-2024-57876 | drm/dp_mst: Fix resetting msg rx state after topology removal | |
| CVE-2024-57805 | ASoC: SOF: Intel: hda-dai: Do not release the link DMA on STOP | |
| CVE-2024-57804 | scsi: mpi3mr: Fix corrupt config pages PHY state is switched in sysfs | |
| CVE-2024-57800 | ALSA: memalloc: prefer dma_mapping_error() over explicit address checking | |
| CVE-2024-57799 | phy: rockchip: samsung-hdptx: Set drvdata before enabling runtime PM | |
| CVE-2024-57798 | drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() | |
| CVE-2024-57793 | virt: tdx-guest: Just leak decrypted memory on unrecoverable errors | |
| CVE-2024-57806 | btrfs: fix transaction atomicity bug when enabling simple quotas | |
| CVE-2024-57791 | net/smc: check return value of sock_recvmsg when draining clc data | |
| CVE-2024-56788 | net: ethernet: oa_tc6: fix tx skb race condition between reference pointers | |
| CVE-2024-56372 | net: tun: fix tun_napi_alloc_frags() | |
| CVE-2024-56369 | drm/modes: Avoid divide by zero harder in drm_mode_vrefresh() | |
| CVE-2024-56368 | ring-buffer: Fix overflow in __rb_map_vma | |
| CVE-2024-55916 | Drivers: hv: util: Avoid accessing a ringbuffer not initialized yet | |
| CVE-2024-55881 | KVM: x86: Play nice with protected guests in complete_hypercall_exit() | |
| CVE-2024-54193 | accel/ivpu: Fix WARN in ivpu_ipc_send_receive_internal() | |
| CVE-2024-54455 | accel/ivpu: Fix general protection fault in ivpu_bo_list() |
Showing top 20 of 67 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
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