CVE-2026-90224 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20506363
- published5 Oct 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
NewCVE-2026-90224 (opens in a new tab)How to fix?
Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
nfc: nci: fix double completion race in nci_data_exchange_complete
nci_close_device() and nci_rx_work can both call nci_data_exchange_complete() concurrently. After commit 4527025d440ce8 ("nfc: nci: fix circular locking dependency in nci_close_device") moved flush_workqueue(ndev->rx_wq) after mutex_unlock(&ndev->req_lock), rx_work is no longer serialized with the explicit completion call in the close path. Both callers read the non-NULL callback pointer and invoke rawsock_data_exchange_complete(), which calls sock_put() -- but only one sock_hold() was taken, so the second sock_put() underflows the refcount and frees the socket while it is still in use.
Replace the bare clear_bit(NCI_DATA_EXCHANGE) with test_and_clear_bit() so that only the first caller proceeds to invoke the callback.
References
- https://security-tracker.debian.org/tracker/CVE-2026-90224
- https://git.kernel.org/stable/c/3f075832734005310740d148d1cf1c1e792ebdca
- https://git.kernel.org/stable/c/588ccd19a6e69eca72d54608c3ab3b45709b2305
- https://git.kernel.org/stable/c/8265a626cc14a48e46e6dc8c47667e72b4232ac2
- https://git.kernel.org/stable/c/9030a1bbe2c6b1e3e54cef462d159b5248f09fd2
- https://git.kernel.org/stable/c/ba4c776af3dc21ed04e315e6545e99703bb1b53a
- https://git.kernel.org/stable/c/bfdf412208fea7fc0d5b32d68a35b25261917393
- https://git.kernel.org/stable/c/cf646a9f5554bc07d6ccb59c327812b3a0c6a368
- https://git.kernel.org/stable/c/ee08414d78b851e3d1856d6e4d631939b01a1bbe