# CVE-2026-72230: batman-adv: frag: free unfragmentable packet

Status: published. Published: 2026-08-15. Updated: 2026-11-06.

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

batman-adv: frag: free unfragmentable packet

The caller of batadv_frag_send_packet() assume that the skb provided to the
function are always consumed. But the pre-check for an empty payload or the
zero fragment size returned an error without any further actions.

A failed pre-check must use the same error handling code as the rest of the
function.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ ee75ed88879af88558818a5c6609d85f60ff0df4; < a5155aeeae8ead3c6081f7f197608033e4dcfe75 (affected, git); ≥ ee75ed88879af88558818a5c6609d85f60ff0df4; < 04ccbed8179e7d4d0906d00939300ddc5b48ce7e (affected, git); ≥ ee75ed88879af88558818a5c6609d85f60ff0df4; < 601dff01a03ecced59938cdd69eeb2c66e4158f2 (affected, git); ≥ ee75ed88879af88558818a5c6609d85f60ff0df4; < 740542f11bf8c86411c429fbd7f84fc6bee80e76 (affected, git); ≥ ee75ed88879af88558818a5c6609d85f60ff0df4; < 59e1da1ab354d1f2b7bab8d44f846262f990ad9d (affected, git); ≥ ee75ed88879af88558818a5c6609d85f60ff0df4; < 8f54162e07d3eea1e4ff21464cf2a815d79b6510 (affected, git); ≥ ee75ed88879af88558818a5c6609d85f60ff0df4; < 08047838817561cef33ada9774a2a4663d499ecb (affected, git); ≥ ee75ed88879af88558818a5c6609d85f60ff0df4; < 6b628425aed49a1c7a4ffc997583840fc582d32b (affected, git). Source: CNA: Linux
- Linux / Linux: 3.13 (affected); ≥ 0; < 3.13 (unaffected, semver); ≥ 5.10.261; ≤ 5.10.* (unaffected, semver); ≥ 5.15.212; ≤ 5.15.* (unaffected, semver); ≥ 6.1.178; ≤ 6.1.* (unaffected, semver); ≥ 6.6.145; ≤ 6.6.* (unaffected, semver); ≥ 6.12.97; ≤ 6.12.* (unaffected, semver); ≥ 6.18.40; ≤ 6.18.* (unaffected, semver); ≥ 7.1.5; ≤ 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 12.55%

- 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/a5155aeeae8ead3c6081f7f197608033e4dcfe75 (CNA: Linux)

- https://git.kernel.org/stable/c/04ccbed8179e7d4d0906d00939300ddc5b48ce7e (CNA: Linux)

- https://git.kernel.org/stable/c/601dff01a03ecced59938cdd69eeb2c66e4158f2 (CNA: Linux)

- https://git.kernel.org/stable/c/740542f11bf8c86411c429fbd7f84fc6bee80e76 (CNA: Linux)

- https://git.kernel.org/stable/c/59e1da1ab354d1f2b7bab8d44f846262f990ad9d (CNA: Linux)

- https://git.kernel.org/stable/c/8f54162e07d3eea1e4ff21464cf2a815d79b6510 (CNA: Linux)

- https://git.kernel.org/stable/c/08047838817561cef33ada9774a2a4663d499ecb (CNA: Linux)

- https://git.kernel.org/stable/c/6b628425aed49a1c7a4ffc997583840fc582d32b (CNA: Linux)

- https://git.kernel.org/stable/c/04ccbed8179e7d4d0906d00939300ddc5b48ce7e (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/08047838817561cef33ada9774a2a4663d499ecb (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/59e1da1ab354d1f2b7bab8d44f846262f990ad9d (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/601dff01a03ecced59938cdd69eeb2c66e4158f2 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/6b628425aed49a1c7a4ffc997583840fc582d32b (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/740542f11bf8c86411c429fbd7f84fc6bee80e76 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/8f54162e07d3eea1e4ff21464cf2a815d79b6510 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/a5155aeeae8ead3c6081f7f197608033e4dcfe75 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-72230; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-72230; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-72230; retrieved 2026-11-06; source updated Not reported

Revision: ed152a91e2ecafd33e29de9dc603ebd082c8ff9e9354cda4c6dcce342e4061e1

Canonical: https://y2.dev/cve/CVE-2026-72230

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.