CVE-2025-37955

virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable()

Description

In the Linux kernel, the following vulnerability has been resolved: virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable() The selftests added to our CI by Bui Quang Minh recently reveals that there is a mem leak on the error path of virtnet_xsk_pool_enable(): unreferenced object 0xffff88800a68a000 (size 2048): comm "xdp_helper", pid 318, jiffies 4294692778 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 0): __kvmalloc_node_noprof+0x402/0x570 virtnet_xsk_pool_enable+0x293/0x6a0 (drivers/net/virtio_net.c:5882) xp_assign_dev+0x369/0x670 (net/xdp/xsk_buff_pool.c:226) xsk_bind+0x6a5/0x1ae0 __sys_bind+0x15e/0x230 __x64_sys_bind+0x72/0xb0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/94a6f6c204abb2b2dcd2ce287536cc924469cfb5
https://git.kernel.org/stable/c/ba6917810bb4a5a32661fa941717399052b3f0d9
https://git.kernel.org/stable/c/4397684a292a71fbc1e815c3e283f7490ddce5ae

Frequently Asked Questions

What is the severity of CVE-2025-37955?: CVE-2025-37955 has not yet been assigned a CVSS score.
How to fix CVE-2025-37955?: To fix CVE-2025-37955, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-37955 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-37955 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-37955?: CVE-2025-37955 affects Linux Linux, Linux Linux.

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