High 8.4Published Aug 15, 2026

CVE-2026-72489staging: nvec: fix use-after-free in nvec_rx_completed()

Updated under an hour ago (Oct 27, 2026, 8:50 PM ET)

Does this affect you?

It affects Linux. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: staging: nvec: fix use-after-free in nvec_rx_completed() In nvec_rx_completed(), when an incomplete RX transfer is detected, nvec_msg_free() is called to return the message back to the pool by clearing its 'used' atomic flag. Immediately after this, the code accesses nvec->rx->data[0] to check the message type. Since nvec_msg_free() marks the pool slot as available via atomic_set(), any concurrent or subsequent call to nvec_msg_alloc() could claim that same slot and overwrite its data[] array. Reading nvec->rx->data[0] after freeing the message is therefore a use-after-free. Fix this by saving the message type byte before calling nvec_msg_free(), then using the saved value for the battery quirk check.

CVSS: 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Aug 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from d6bdcf2e1019351cbc176e963b7756766bdd8721 before 6b2ea886ebdae44a2394029844a4e78f58e1587d; from d6bdcf2e1019351cbc176e963b7756766bdd8721 before a37625c7b688fcf68a54263528eccbabfd7fa17a; from d6bdcf2e1019351cbc176e963b7756766bdd8721 before 9f7fe4165a1f1014bdadc8e744c0fd3c2d8c0b89; from d6bdcf2e1019351cbc176e963b7756766bdd8721 before 08626fcfe12308ca3f8b22c538ba7dee0b2dce7a; from d6bdcf2e1019351cbc176e963b7756766bdd8721 before f19a5bc059051143c489dd6f79a0f9c3bfd13aea; from d6bdcf2e1019351cbc176e963b7756766bdd8721 before bb3d592c7d6c4ec8ac6640c690ca13298e7e8e90; from d6bdcf2e1019351cbc176e963b7756766bdd8721 before 5de04caa46b635e180cecbd164e333eca535db94; from d6bdcf2e1019351cbc176e963b7756766bdd8721 before 26813881181deb3a32fbb59eadb2599cbe8423f6	CNA record

References

References

https://git.kernel.org/stable/c/6b2ea886ebdae44a2394029844a4e78f58e1587d
https://git.kernel.org/stable/c/a37625c7b688fcf68a54263528eccbabfd7fa17a
https://git.kernel.org/stable/c/9f7fe4165a1f1014bdadc8e744c0fd3c2d8c0b89
https://git.kernel.org/stable/c/08626fcfe12308ca3f8b22c538ba7dee0b2dce7a
https://git.kernel.org/stable/c/f19a5bc059051143c489dd6f79a0f9c3bfd13aea
https://git.kernel.org/stable/c/bb3d592c7d6c4ec8ac6640c690ca13298e7e8e90
https://git.kernel.org/stable/c/5de04caa46b635e180cecbd164e333eca535db94
https://git.kernel.org/stable/c/26813881181deb3a32fbb59eadb2599cbe8423f6

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.