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NVD / CVE Program· CNA Linux

CVE-2022-49687: virtio_net: fix xdp_rxq_info bug after suspend/resume

HighCVSS 7.1 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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: 0.28% (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 340fbdc8011f2dc678f622c5ce1cbb5ab8305de7, 57ee40f1b198b59d43c216fbc4672f9300d3c8b0, 8af52fe9fd3bf5e7478da99193c0632276e1dfce.

Low priority for now. Upgrade to Linux Linux 340fbdc8011f2dc678f622c5ce1cbb5ab8305de7, 57ee40f1b198b59d43c216fbc4672f9300d3c8b0, 8af52fe9fd3bf5e7478da99193c0632276e1dfce 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: fix xdp_rxq_info bug after suspend/resume The following sequence currently causes a driver bug warning when using virtio_net: # ip link set eth0 up # echo mem > /sys/power/state (or e.g. # rtcwake -s 10 -m mem) <resume> # ip link set eth0 down Missing register, driver bug WARNING: CPU: 0 PID: 375 at net/core/xdp.c:138 xdp_rxq_info_unreg+0x58/0x60 Call trace: xdp_rxq_info_unreg+0x58/0x60 virtnet_close+0x58/0xac __dev_close_many+0xac/0x140 __dev_change_flags+0xd8/0x210 dev_change_flags+0x24/0x64 do_setlink+0x230/0xdd0 ... This happens because virtnet_freeze() frees the receive_queue completely (including struct xdp_rxq_info) but does not call xdp_rxq_info_unreg(). Similarly, virtnet_restore() sets up the receive_queue again but does not call xdp_rxq_info_reg(). Actually, parts of virtnet_freeze_down() and virtnet_restore_up() are almost identical to virtnet_close() and virtnet_open(): only the calls to xdp_rxq_info_(un)reg() are missing. This means that we can fix this easily and avoid such problems in the future by just calling virtnet_close()/open() from the freeze/restore handlers. Aside from adding the missing xdp_rxq_info calls the only difference is that the refill work is only cancelled if netif_running(). However, this should not make any functional difference since the refill work should only be active if the network interface is actually up.

Published
Feb 26, 2025
Updated
Nov 5, 2026
EPSS
0.2% · 21th percentile
CWE
—

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • 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

    • 4.16affected
    • 754b8a21a96d5f11712245aef907149606b323ae and later · before 9222672fa6370f0ec3d899662cb8680e9282fc4caffected · git
    • 754b8a21a96d5f11712245aef907149606b323ae and later · before 8c7a32b7c15555beddc5810c3334d9cefff061bfaffected · git
    • 754b8a21a96d5f11712245aef907149606b323ae and later · before 340fbdc8011f2dc678f622c5ce1cbb5ab8305de7affected · git
    • 754b8a21a96d5f11712245aef907149606b323ae and later · before 8d7fe9ad6fddc2af8bde4b921b4f8fab231ed38caffected · git
    • 754b8a21a96d5f11712245aef907149606b323ae and later · before 57ee40f1b198b59d43c216fbc4672f9300d3c8b0affected · git
    • 754b8a21a96d5f11712245aef907149606b323ae and later · before 8af52fe9fd3bf5e7478da99193c0632276e1dfceaffected · git
    • before 4.16not affected · semver
    • 4.19.250 and later · up to and including 4.19.*not affected · semver
    • 5.4.202 and later · up to and including 5.4.*not affected · semver
Affected versions · NVD (6)

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

  • linux linux kernel4.16 and later · before 4.19.250
  • linux linux kernel4.20 and later · before 5.4.202
  • linux linux kernel5.5 and later · before 5.10.127
  • linux linux kernel5.11 and later · before 5.15.51
  • linux linux kernel5.16 and later · before 5.18.8
  • linux linux kernel5.19

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.14-15.18.14-1

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-2022-49658Feb 26, 2025 · bpf: Fix insufficient bounds propagation from adjust_scalar_min_max_vals
    22Monitor
  • ← EarlierCVE-2022-49662Feb 26, 2025 · ipv6: fix lockdep splat in in6_dump_addrs()
    22Monitor
  • Later →CVE-2022-49699Feb 26, 2025 · filemap: Handle sibling entries in filemap_get_read_batch()
    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 Linux340fbdc8011f2dc678f622c5ce1cbb5ab8305de7Vendor (CNA)
Linux Linux57ee40f1b198b59d43c216fbc4672f9300d3c8b0Vendor (CNA)
Linux Linux8af52fe9fd3bf5e7478da99193c0632276e1dfceVendor (CNA)
Linux Linux8c7a32b7c15555beddc5810c3334d9cefff061bfVendor (CNA)
Linux Linux8d7fe9ad6fddc2af8bde4b921b4f8fab231ed38cVendor (CNA)
Linux Linux9222672fa6370f0ec3d899662cb8680e9282fc4cVendor (CNA)
debian:linux5.18.14-1 · Debian:12Package 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
high · data can be read
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
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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 (5 more)

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

All records