# nilfs2: fix slab-out-of-bounds in nilfs_direct_propagate after truncation

CVE record · `CVE-2026-89723`

- **Identifiers:** `CVE-2026-89723`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:46 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `36a580eb489f54d81a0534974962e732a314b999 to before 39005fd1ce654ffdecacddc406b9a038efe606e6` (git)
  - affected: `36a580eb489f54d81a0534974962e732a314b999 to before bf49e6f6ddc12445a0330708b365de6458085980` (git)
  - affected: `36a580eb489f54d81a0534974962e732a314b999 to before 4a1bb1f9f24a935c9b3f4fbf98012fa6d4ad826d` (git)
  - affected: `36a580eb489f54d81a0534974962e732a314b999 to before b313edfbc0c2a60f7ce09b2e81ee71909ab8ddaf` (git)
  - affected: `36a580eb489f54d81a0534974962e732a314b999 to before 5d3783c451a546373662ee11ec17019273e68034` (git)
  - affected: `36a580eb489f54d81a0534974962e732a314b999 to before 448636c745a3f3b8582a0b8ce718c890a11c0fa9` (git)
  - affected: `36a580eb489f54d81a0534974962e732a314b999 to before 28362e8ce51377afdec1782e661e808328a10514` (git)
  - affected: `36a580eb489f54d81a0534974962e732a314b999 to before 45662dedb8f272ef7f16e69f13424c4bd0399240` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.30`
  - unaffected: `before 2.6.30` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89723](https://www.cve.org/CVERecord?id=CVE-2026-89723)
- [NVD: CVE-2026-89723](https://nvd.nist.gov/vuln/detail/CVE-2026-89723)

### References from the CNA

- <https://git.kernel.org/stable/c/39005fd1ce654ffdecacddc406b9a038efe606e6>
- <https://git.kernel.org/stable/c/bf49e6f6ddc12445a0330708b365de6458085980>
- <https://git.kernel.org/stable/c/4a1bb1f9f24a935c9b3f4fbf98012fa6d4ad826d>
- <https://git.kernel.org/stable/c/b313edfbc0c2a60f7ce09b2e81ee71909ab8ddaf>
- <https://git.kernel.org/stable/c/5d3783c451a546373662ee11ec17019273e68034>
- <https://git.kernel.org/stable/c/448636c745a3f3b8582a0b8ce718c890a11c0fa9>
- <https://git.kernel.org/stable/c/28362e8ce51377afdec1782e661e808328a10514>
- <https://git.kernel.org/stable/c/45662dedb8f272ef7f16e69f13424c4bd0399240>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-89723>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89723/>. Everything for agents: <https://agentprime.io/llms.txt>.