# CVE-2026-68313: tipc: fix infinite loop in __tipc_nl_compat_dumpit

Status: published. Published: 2026-08-10. Updated: 2026-11-06.

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

tipc: fix infinite loop in __tipc_nl_compat_dumpit

cmd->dumpit callback can return a negative errno, causing an infinite
loop due to the while(len) condition. As the loop never terminates,
genl_mutex is never released, and other tasks waiting on it starve in D
state.

Check dumpit's return value, propagate it and jump to err_out on error.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ d0796d1ef63deb38147729664691ba3090930b26; < 2a1c1397275f27e33b6a2a565d81cfef0deb6656 (affected, git); ≥ d0796d1ef63deb38147729664691ba3090930b26; < 98d09766cee3182aae292886e2fef0cbe8dba537 (affected, git); ≥ d0796d1ef63deb38147729664691ba3090930b26; < 9cd8c88e1336ec0fbe02af1ddf2b52838d30fae4 (affected, git); ≥ d0796d1ef63deb38147729664691ba3090930b26; < f9c669d9f4cac832fe31193cdbc24c6a9d99398b (affected, git); ≥ d0796d1ef63deb38147729664691ba3090930b26; < 1ab78af2140189b735b8d3b889b0284128cb2013 (affected, git); ≥ d0796d1ef63deb38147729664691ba3090930b26; < e740e90ca8e7f70d9eac1aa31a8b3e0e4d32b2ef (affected, git); ≥ d0796d1ef63deb38147729664691ba3090930b26; < b8f3b8efa5f99081b14de1a7ffa68a81bf01bd48 (affected, git); ≥ d0796d1ef63deb38147729664691ba3090930b26; < 22f8aa35964e8f2ab026578f45befc9605fd1b28 (affected, git). Source: CNA: Linux
- Linux / Linux: 4.0 (affected); ≥ 0; < 4.0 (unaffected, semver); ≥ 5.10.265; ≤ 5.10.* (unaffected, semver); ≥ 5.15.216; ≤ 5.15.* (unaffected, semver); ≥ 6.1.183; ≤ 6.1.* (unaffected, semver); ≥ 6.6.148; ≤ 6.6.* (unaffected, semver); ≥ 6.12.101; ≤ 6.12.* (unaffected, semver); ≥ 6.18.42; ≤ 6.18.* (unaffected, semver); ≥ 7.1.6; ≤ 7.1.* (unaffected, semver); ≥ 7.2; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.22% as of 2026-11-06; percentile 12.16%

- 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/2a1c1397275f27e33b6a2a565d81cfef0deb6656 (CNA: Linux)

- https://git.kernel.org/stable/c/98d09766cee3182aae292886e2fef0cbe8dba537 (CNA: Linux)

- https://git.kernel.org/stable/c/9cd8c88e1336ec0fbe02af1ddf2b52838d30fae4 (CNA: Linux)

- https://git.kernel.org/stable/c/f9c669d9f4cac832fe31193cdbc24c6a9d99398b (CNA: Linux)

- https://git.kernel.org/stable/c/1ab78af2140189b735b8d3b889b0284128cb2013 (CNA: Linux)

- https://git.kernel.org/stable/c/e740e90ca8e7f70d9eac1aa31a8b3e0e4d32b2ef (CNA: Linux)

- https://git.kernel.org/stable/c/b8f3b8efa5f99081b14de1a7ffa68a81bf01bd48 (CNA: Linux)

- https://git.kernel.org/stable/c/22f8aa35964e8f2ab026578f45befc9605fd1b28 (CNA: Linux)

- https://git.kernel.org/stable/c/1ab78af2140189b735b8d3b889b0284128cb2013 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/22f8aa35964e8f2ab026578f45befc9605fd1b28 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/2a1c1397275f27e33b6a2a565d81cfef0deb6656 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/98d09766cee3182aae292886e2fef0cbe8dba537 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/9cd8c88e1336ec0fbe02af1ddf2b52838d30fae4 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/b8f3b8efa5f99081b14de1a7ffa68a81bf01bd48 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/e740e90ca8e7f70d9eac1aa31a8b3e0e4d32b2ef (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/f9c669d9f4cac832fe31193cdbc24c6a9d99398b (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-68313; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-68313; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-68313; retrieved 2026-11-06; source updated Not reported

Revision: a83fdf3266b4fb3ef90a165bb71da93150f5905c451ce2c8b18076b3e31d8827

Canonical: https://y2.dev/cve/CVE-2026-68313

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