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

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-15 · updated 2026-08-17

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.

Affected products

Linux kernel: 5.10 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/19d2d36e193c3fb515c052a56bfc83d8ac7b6764
https://git.kernel.org/stable/c/3d45d40b872aec0073d4cf08956a6c9b87c5e396
https://git.kernel.org/stable/c/452ec5058ea4ed63adae8d6beeac9ee687fe8061
https://git.kernel.org/stable/c/a056db30de92945ff8ee6033096678bfbae878e3
https://git.kernel.org/stable/c/c642a530aaaeb9a3e356cedfe77955e7f983380e
https://git.kernel.org/stable/c/d6c0b0c802d3c49b86cad665a7f3790dc55a0394
https://git.kernel.org/stable/c/e68ada66afcae0bc2a7c06b43c5a9a081d29e7b4
https://git.kernel.org/stable/c/e8e9dff204e8d8553495893e1a44d2b5021648de

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