CVE-2025-38569
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-08-19

Last updated on: 2025-11-03

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: benet: fix BUG when creating VFs benet crashes as soon as SRIOV VFs are created: kernel BUG at mm/vmalloc.c:3457! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 4 UID: 0 PID: 7408 Comm: test.sh Kdump: loaded Not tainted 6.16.0+ #1 PREEMPT(voluntary) [...] RIP: 0010:vunmap+0x5f/0x70 [...] Call Trace: <TASK> __iommu_dma_free+0xe8/0x1c0 be_cmd_set_mac_list+0x3fe/0x640 [be2net] be_cmd_set_mac+0xaf/0x110 [be2net] be_vf_eth_addr_config+0x19f/0x330 [be2net] be_vf_setup+0x4f7/0x990 [be2net] be_pci_sriov_configure+0x3a1/0x470 [be2net] sriov_numvfs_store+0x20b/0x380 kernfs_fop_write_iter+0x354/0x530 vfs_write+0x9b9/0xf60 ksys_write+0xf3/0x1d0 do_syscall_64+0x8c/0x3d0 be_cmd_set_mac_list() calls dma_free_coherent() under a spin_lock_bh. Fix it by freeing only after the lock has been released.
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Meta Information
Published
2025-08-19
Last Modified
2025-11-03
Generated
2026-05-07
AI Q&A
2025-08-19
EPSS Evaluated
2026-05-05
NVD
CVE-2025-38569
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux kernel 5.10.244-1
linux kernel 6.1.153-1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a bug in the Linux kernel's be2net driver related to SR-IOV Virtual Functions (VFs). When VFs are created, the be2net driver crashes due to a kernel BUG triggered by improper handling of dma_free_coherent() calls under a spin_lock_bh. The fix involves ensuring that dma_free_coherent() is called only after the lock has been released to prevent the crash.


How can this vulnerability impact me? :

This vulnerability can cause the Linux kernel to crash when SR-IOV Virtual Functions are created, leading to system instability or downtime. This could disrupt network functionality on affected systems using the be2net driver with SR-IOV enabled.


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