# CVE-2022-49836: siox: fix possible memory leak in siox_device_add()

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

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

siox: fix possible memory leak in siox_device_add()

If device_register() returns error in siox_device_add(),
the name allocated by dev_set_name() need be freed. As
comment of device_register() says, it should use put_device()
to give up the reference in the error path. So fix this
by calling put_device(), then the name can be freed in
kobject_cleanup(), and sdevice is freed in siox_device_release(),
set it to null in error path.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ bbecb07fa0af9a41507ce06d4631fdb3b5059417; < 0a5da069603ecc3d7aa09167450235462adaa295 (affected, git); ≥ bbecb07fa0af9a41507ce06d4631fdb3b5059417; < f9fe7ba4ea5b24ffdf8e125f660aca3ba4a147fb (affected, git); ≥ bbecb07fa0af9a41507ce06d4631fdb3b5059417; < a4b5423f88a17a36550ae8c16c46779b1ee42f4b (affected, git); ≥ bbecb07fa0af9a41507ce06d4631fdb3b5059417; < 5d03c2911c529ea4d6ebfec53425f1091e8d402b (affected, git); ≥ bbecb07fa0af9a41507ce06d4631fdb3b5059417; < d9c31e728843259209fb530c59995e4fe262699f (affected, git); ≥ bbecb07fa0af9a41507ce06d4631fdb3b5059417; < 6e63153db50059fb78b8a8447b132664887d24e3 (affected, git). Source: CNA: Linux
- Linux / Linux: 4.16 (affected); ≥ 0; < 4.16 (unaffected, semver); ≥ 4.19.267; ≤ 4.19.* (unaffected, semver); ≥ 5.4.225; ≤ 5.4.* (unaffected, semver); ≥ 5.10.156; ≤ 5.10.* (unaffected, semver); ≥ 5.15.80; ≤ 5.15.* (unaffected, semver); ≥ 6.0.10; ≤ 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 10.28%

- 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/0a5da069603ecc3d7aa09167450235462adaa295 (CNA: Linux)

- https://git.kernel.org/stable/c/f9fe7ba4ea5b24ffdf8e125f660aca3ba4a147fb (CNA: Linux)

- https://git.kernel.org/stable/c/a4b5423f88a17a36550ae8c16c46779b1ee42f4b (CNA: Linux)

- https://git.kernel.org/stable/c/5d03c2911c529ea4d6ebfec53425f1091e8d402b (CNA: Linux)

- https://git.kernel.org/stable/c/d9c31e728843259209fb530c59995e4fe262699f (CNA: Linux)

- https://git.kernel.org/stable/c/6e63153db50059fb78b8a8447b132664887d24e3 (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2022-49836; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2022-49836; retrieved 2026-11-05; source updated Not reported

Revision: 4e89db322c5c82d0caf7e3a702f94857ec57f90727056c977c64708d21091503

Canonical: https://y2.dev/cve/CVE-2022-49836

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