# CVE-2026-98130

Linux kernel SCTP TOCTOU race causes use-after-free in timer handling.

- Page: https://www.vulneraibility.com/cve/CVE-2026-98130
- CVSS: 8.1
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.45% (percentile 39.7)
- Published: 2026-09-25

## Affected versions

- Linux: affected >= 20a785aa52c82246055a089e55df9dac47d67da1 and < e42ba56281ca3ae2dcb3558bebee9a1c9a4831d9; >= 20a785aa52c82246055a089e55df9dac47d67da1 and < 00b841bac10230c557be6b38efc48508198fe23e; >= 20a785aa52c82246055a089e55df9dac47d67da1 and < 3d698d1e6c8bc41e3e1707777a016f1bdd07842d; >= 20a785aa52c82246055a089e55df9dac47d67da1 and < 2188569e7e1b0bc3f3b557dc97ab7a02befc11c8; 9c0a4652f750afe3b4468cbcd9335b244ce2facd; 70989e501fbce502198d82da88358ce453575a05; 085bb270b4b1168c93afb37bbafc881207d15443; >= 4.19.126 and < 4.20; >= 5.4.44 and < 5.5; >= 5.6.16 and < 5.7; 5.7; fixed in < 5.7, >= 6.12.111 and <= 6.12.*, >= 6.18.53 and <= 6.18.*, >= 7.2.7 and <= 7.2.*, >= 7.3-rc2 and <= *

A version outside these ranges is not a statement that it is unaffected.

## Impact

SCTP timer race leads to kernel use-after-free, enabling denial-of-service or possible kernel memory corruption and potential code execution.

## Action

Patch when possible

## Recommendation

Install kernel updates with the SCTP fix and reboot affected hosts.

## References

- [other] https://git.kernel.org/stable/c/cbf2df9aac4202f9fb0b361a7fe8c79b29fad92c
- [other] https://git.kernel.org/stable/c/3205a20f837f5b1f009427ac3d9f706bf8a6fbec
- [other] https://git.kernel.org/stable/c/755d70ca845fd9b87c7b338ae6ae832b08cd0005
- [other] https://git.kernel.org/stable/c/09e7f9290d63178f56095d5c18fb9f9470153db5
- [other] https://git.kernel.org/stable/c/e42ba56281ca3ae2dcb3558bebee9a1c9a4831d9
- [other] https://git.kernel.org/stable/c/00b841bac10230c557be6b38efc48508198fe23e
- [other] https://git.kernel.org/stable/c/3d698d1e6c8bc41e3e1707777a016f1bdd07842d
- [other] https://git.kernel.org/stable/c/2188569e7e1b0bc3f3b557dc97ab7a02befc11c8

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.