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NVD / CVE Program· CNA Linux

CVE-2025-37955: virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable()

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.18% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 4397684a292a71fbc1e815c3e283f7490ddce5ae, 94a6f6c204abb2b2dcd2ce287536cc924469cfb5, ba6917810bb4a5a32661fa941717399052b3f0d9.

Low priority for now. Upgrade to Linux Linux 4397684a292a71fbc1e815c3e283f7490ddce5ae, 94a6f6c204abb2b2dcd2ce287536cc924469cfb5, ba6917810bb4a5a32661fa941717399052b3f0d9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

Published
May 20, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 8th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.11affected
    • e9f3962441c0a4d6f16c656e6c8aa02a3ccdd568 and later · before 94a6f6c204abb2b2dcd2ce287536cc924469cfb5affected · git
    • e9f3962441c0a4d6f16c656e6c8aa02a3ccdd568 and later · before ba6917810bb4a5a32661fa941717399052b3f0d9affected · git
    • e9f3962441c0a4d6f16c656e6c8aa02a3ccdd568 and later · before 4397684a292a71fbc1e815c3e283f7490ddce5aeaffected · git
    • before 6.11not affected · semver
    • 6.12.29 and later · up to and including 6.12.*not affected · semver
    • 6.14.7 and later · up to and including 6.14.*not affected · semver
    • 6.15 and laternot affected · original_commit_for_fix

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.11 and later · before 6.12.29
  • linux linux kernel6.13 and later · before 6.14.7
  • linux linux kernel6.15

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:13linuxbefore 6.12.29-16.12.29-1
openSUSE:Leap 16.0dtb-aarch64before 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-64kbbefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-azurebefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-defaultbefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-default-basebefore 6.12.0-160000.26.1.160000.2.76.12.0-160000.26.1.160000.2.7
openSUSE:Leap 16.0kernel-docsbefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-kvmsmallbefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-obs-buildbefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-obs-qabefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-rtbefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-sourcebefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-symsbefore 6.12.0-160000.26.16.12.0-160000.26.1
openSUSE:Leap 16.0kernel-zfcpdumpbefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Enterprise Server 16.0kernel-azurebefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Enterprise Server 16.0kernel-docsbefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Enterprise Server 16.0kernel-kvmsmallbefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Enterprise Server 16.0kernel-obs-qabefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Enterprise Server 16.0kernel-zfcpdumpbefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Micro 6.2kernel-64kbbefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Micro 6.2kernel-defaultbefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Micro 6.2kernel-default-basebefore 6.12.0-160000.26.1.160000.2.76.12.0-160000.26.1.160000.2.7
SUSE:Linux Micro 6.2kernel-rtbefore 6.12.0-160000.26.16.12.0-160000.26.1
SUSE:Linux Micro 6.2kernel-sourcebefore 6.12.0-160000.26.16.12.0-160000.26.1

+2

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-37951May 20, 2025 · drm/v3d: Add job to pending list if the reset was skipped
    22Monitor
  • ← EarlierCVE-2025-37953May 20, 2025 · sch_htb: make htb_deactivate() idempotent
    22Monitor
  • Later →CVE-2025-37962May 20, 2025 · ksmbd: fix memory leak in parse_lease_state()
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux4397684a292a71fbc1e815c3e283f7490ddce5aeVendor (CNA)
Linux Linux94a6f6c204abb2b2dcd2ce287536cc924469cfb5Vendor (CNA)
Linux Linuxba6917810bb4a5a32661fa941717399052b3f0d9Vendor (CNA)
debian:linux6.12.29-1 · Debian:13Package registry (OSV)
opensuse:dtb-aarch646.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-64kb6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-azure6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-default6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-default-base6.12.0-160000.26.1.160000.2.7 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-docs6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-kvmsmall6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-obs-build6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-obs-qa6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-rt6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-source6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-syms6.12.0-160000.26.1 · openSUSE:Leap 16.0Package registry (OSV)
suse:kernel-64kb6.12.0-160000.26.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-azure6.12.0-160000.26.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-default6.12.0-160000.26.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-default-base6.12.0-160000.26.1.160000.2.7 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-docs6.12.0-160000.26.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-kvmsmall6.12.0-160000.26.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-obs-build6.12.0-160000.26.1 · SUSE:Linux Micro Extras 6.2Package registry (OSV)
suse:kernel-obs-qa6.12.0-160000.26.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-rt6.12.0-160000.26.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-source6.12.0-160000.26.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-syms6.12.0-160000.26.1 · SUSE:Linux Micro Extras 6.2Package registry (OSV)
suse:kernel-zfcpdump6.12.0-160000.26.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records