# xen/netfront: don't leak the skb when xennet_fill_frags() fails

CVE record · `CVE-2026-99057`

- **Identifiers:** `CVE-2026-99057`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 12:22 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: `ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to before 6e6bd1051daabc327233c3ca3d00613fc6783c8e` (git)
  - affected: `ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to before 0cf0a25a639c535146c5eb4480d256995721aed6` (git)
  - affected: `ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to before 53a131eb2a998c77e2851401b32b712d6c6e8487` (git)
  - affected: `ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to before 5051df031144753d3e18862514969146b601d089` (git)
  - affected: `ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to before 99011a11c97340ef7290df7dc199305c73fab2f2` (git)
  - affected: `ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to before 086944c1c2cbb683543bc3ff08637847b03c8009` (git)
  - affected: `ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to before 84e3ea6502b5f14ce8d499d0b6e0e38386274cf0` (git)
  - affected: `ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to before 93ccaf1c26e2133396173b76a071e59024daa622` (git)
  - affected: `bd1468048aa3e2af865da92990539946d4483989` (git)
  - affected: `29a6193c0d74390c004808441061ac1812cf6f51` (git)
  - affected: `7eced4478f4ec6ff0a603ddfd6e24a5d3831fca7` (git)
  - affected: `b73a161e9beff24bf1803ba393dff95a255268f9` (git)
  - and 4 more
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.19`
  - unaffected: `before 4.19` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.113 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.11 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 8th percentile, on 6 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-99057](https://www.cve.org/CVERecord?id=CVE-2026-99057)
- [NVD: CVE-2026-99057](https://nvd.nist.gov/vuln/detail/CVE-2026-99057)

### References from the CNA

- <https://git.kernel.org/stable/c/6e6bd1051daabc327233c3ca3d00613fc6783c8e>
- <https://git.kernel.org/stable/c/0cf0a25a639c535146c5eb4480d256995721aed6>
- <https://git.kernel.org/stable/c/53a131eb2a998c77e2851401b32b712d6c6e8487>
- <https://git.kernel.org/stable/c/5051df031144753d3e18862514969146b601d089>
- <https://git.kernel.org/stable/c/99011a11c97340ef7290df7dc199305c73fab2f2>
- <https://git.kernel.org/stable/c/086944c1c2cbb683543bc3ff08637847b03c8009>
- <https://git.kernel.org/stable/c/84e3ea6502b5f14ce8d499d0b6e0e38386274cf0>
- <https://git.kernel.org/stable/c/93ccaf1c26e2133396173b76a071e59024daa622>

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-2026-99057>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-99057/>. Everything for agents: <https://agentprime.io/llms.txt>.