# CVE-2026-43419: ceph: fix memory leaks in ceph_mdsc_build_path()

Status: published. Published: 2026-05-08. Updated: 2026-11-06.

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

ceph: fix memory leaks in ceph_mdsc_build_path()

Add __putname() calls to error code paths that did not free the "path"
pointer obtained by __getname().  If ownership of this pointer is not
passed to the caller via path_info.path, the function must free it
before returning.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ e4b168c64da06954be5d520f6c16469b1cadc069; < d39366c169f873edc8ad21fdf6bf08d1de603dbb (affected, git); ≥ 3fd945a79e147ee10f84213976889b29049c3519; < 657dc653b06a3cc0282aea447a3f137fa94066a4 (affected, git); ≥ 3fd945a79e147ee10f84213976889b29049c3519; < 5895d0164c84d7fec6abc198920c257f55c51899 (affected, git); ≥ 3fd945a79e147ee10f84213976889b29049c3519; < 097cd68f46686391a98f2618188f0cb7b7570de2 (affected, git); ≥ 3fd945a79e147ee10f84213976889b29049c3519; < 13b8b9d6f59ef17fb96c298c3a0d62a8306950cc (affected, git); ≥ 3fd945a79e147ee10f84213976889b29049c3519; < 040d159a45ded7f33201421a81df0aa2a86e5a0b (affected, git); 0f2b2d9e881c90402dbe28f9ba831775b7992e1f (affected, git); d42ad3f161a5a487f81915c406f46943c7187a0a (affected, git); ≥ 6.1.125; < 6.1.191 (affected, semver); ≥ 5.10.234; < 5.11 (affected, semver); ≥ 5.15.177; < 5.16 (affected, semver). Source: CNA: Linux
- Linux / Linux: 6.6 (affected); ≥ 0; < 6.6 (unaffected, semver); ≥ 6.1.191; ≤ 6.1.* (unaffected, semver); ≥ 6.6.130; ≤ 6.6.* (unaffected, semver); ≥ 6.12.78; ≤ 6.12.* (unaffected, semver); ≥ 6.18.19; ≤ 6.18.* (unaffected, semver); ≥ 6.19.9; ≤ 6.19.* (unaffected, semver); ≥ 7.0; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.12% as of 2026-11-06; percentile 2.04%

- 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/d39366c169f873edc8ad21fdf6bf08d1de603dbb (CNA: Linux)

- https://git.kernel.org/stable/c/657dc653b06a3cc0282aea447a3f137fa94066a4 (CNA: Linux)

- https://git.kernel.org/stable/c/5895d0164c84d7fec6abc198920c257f55c51899 (CNA: Linux)

- https://git.kernel.org/stable/c/097cd68f46686391a98f2618188f0cb7b7570de2 (CNA: Linux)

- https://git.kernel.org/stable/c/13b8b9d6f59ef17fb96c298c3a0d62a8306950cc (CNA: Linux)

- https://git.kernel.org/stable/c/040d159a45ded7f33201421a81df0aa2a86e5a0b (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-43419; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-43419; retrieved 2026-11-06; source updated Not reported

Revision: 12319c2c82f37be16062768319ccd9b0defabec9ee78959cb96a3de9fd32d996

Canonical: https://y2.dev/cve/CVE-2026-43419

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