# CVE-2022-49918: ipvs: fix WARNING in __ip_vs_cleanup_batch()

Status: published. Published: 2025-05-01. Updated: 2026-11-05.

In the Linux kernel, the following vulnerability has been resolved:

ipvs: fix WARNING in __ip_vs_cleanup_batch()

During the initialization of ip_vs_conn_net_init(), if file ip_vs_conn
or ip_vs_conn_sync fails to be created, the initialization is successful
by default. Therefore, the ip_vs_conn or ip_vs_conn_sync file doesn't
be found during the remove.

The following is the stack information:
name 'ip_vs_conn_sync'
WARNING: CPU: 3 PID: 9 at fs/proc/generic.c:712
remove_proc_entry+0x389/0x460
Modules linked in:
Workqueue: netns cleanup_net
RIP: 0010:remove_proc_entry+0x389/0x460
Call Trace:
<TASK>
__ip_vs_cleanup_batch+0x7d/0x120
ops_exit_list+0x125/0x170
cleanup_net+0x4ea/0xb00
process_one_work+0x9bf/0x1710
worker_thread+0x665/0x1080
kthread+0x2e4/0x3a0
ret_from_fork+0x1f/0x30
</TASK>

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ 61b1ab4583e275af216c8454b9256de680499b19; < f08ee2aa24c076f81d84e26e213d8c6f4efd9f50 (affected, git); ≥ 61b1ab4583e275af216c8454b9256de680499b19; < 7effc4ce3d1434ce6ff286866585a6e905fdbfc1 (affected, git); ≥ 61b1ab4583e275af216c8454b9256de680499b19; < 931f56d59c854263b32075bfac56fdb3b1598d1b (affected, git); ≥ 61b1ab4583e275af216c8454b9256de680499b19; < 5ee2d6b726b0ce339e36569e5849692f4cf4595e (affected, git); ≥ 61b1ab4583e275af216c8454b9256de680499b19; < e724220b826e008764309d2a1f55a9434a4e1530 (affected, git); ≥ 61b1ab4583e275af216c8454b9256de680499b19; < 3d00c6a0da8ddcf75213e004765e4a42acc71d5d (affected, git). Source: CNA: Linux
- Linux / Linux: 2.6.39 (affected); ≥ 0; < 2.6.39 (unaffected, semver); ≥ 4.19.265; ≤ 4.19.* (unaffected, semver); ≥ 5.4.224; ≤ 5.4.* (unaffected, semver); ≥ 5.10.154; ≤ 5.10.* (unaffected, semver); ≥ 5.15.78; ≤ 5.15.* (unaffected, semver); ≥ 6.0.8; ≤ 6.0.* (unaffected, semver); ≥ 6.1; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.20% as of 2026-11-05; percentile 10.33%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/f08ee2aa24c076f81d84e26e213d8c6f4efd9f50 (CNA: Linux)

- https://git.kernel.org/stable/c/7effc4ce3d1434ce6ff286866585a6e905fdbfc1 (CNA: Linux)

- https://git.kernel.org/stable/c/931f56d59c854263b32075bfac56fdb3b1598d1b (CNA: Linux)

- https://git.kernel.org/stable/c/5ee2d6b726b0ce339e36569e5849692f4cf4595e (CNA: Linux)

- https://git.kernel.org/stable/c/e724220b826e008764309d2a1f55a9434a4e1530 (CNA: Linux)

- https://git.kernel.org/stable/c/3d00c6a0da8ddcf75213e004765e4a42acc71d5d (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2022-49918; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2022-49918; retrieved 2026-11-05; source updated Not reported

Revision: ab13a44591886ee6e823acf56d35a7c490dc75b2cebd1a73d0f96c60f25bc371

Canonical: https://y2.dev/cve/CVE-2022-49918

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