NULL Pointer Dereference Affecting kernel-uek-debug-modules-deprecated package, versions <0:6.12.0-206.104.3.3.el10uek
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-ORACLE10-KERNELUEKDEBUGMODULESDEPRECATED-19613678
- published5 Sept 2026
- disclosed25 Jul 2026
Introduced: 25 Jul 2026
CVE-2026-64427 (opens in a new tab)How to fix?
Upgrade Oracle:10 kernel-uek-debug-modules-deprecated to version 0:6.12.0-206.104.3.3.el10uek or higher.
This issue was patched in ELSA-2026-500248.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug-modules-deprecated package and not the kernel-uek-debug-modules-deprecated package as distributed by Oracle.
See How to fix? for Oracle:10 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
HID: logitech-dj: Fix maxfield check in DJ short report validation
Commit b6a57912854e ("HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write") added validation for the DJ short output report, but the error path dereferences rep->field[0] even when rep->maxfield is zero.
Commit 8b9a097eb2fc ("HID: logitech-dj: fix wrong detection of bad DJ_SHORT output report") made the check conditional on rep being present, but a crafted descriptor can still create report ID 0x20 with only padding output items. hid-core registers the report, ignores the padding field, and leaves rep->maxfield as zero.
In that case the validation enters the rep->maxfield < 1 branch and then dereferences rep->field[0]->report_count while printing the error message, causing a NULL pointer dereference during probe. This is reproducible with uhid by emulating a Logitech receiver with a padding-only DJ short output report:
BUG: KASAN: null-ptr-deref in logi_dj_probe+0xb1/0x754 [hid_logitech_dj] Read of size 4 at addr 0000000000000028 by task kworker/4:1/129 ... Call Trace: logi_dj_probe+0xb1/0x754 [hid_logitech_dj] hid_device_probe+0x329/0x3f0 [hid] really_probe+0x162/0x570 __device_attach+0x137/0x2c0 bus_probe_device+0x38/0xc0 device_add+0xa56/0xce0 hid_add_device+0x19c/0x280 [hid] uhid_device_add_worker+0x2c/0xb0 [uhid]
Reject the zero-field report before printing the field report_count.
References
- https://linux.oracle.com/cve/CVE-2026-64427.html
- https://linux.oracle.com/errata/ELSA-2026-500248.html
- https://linux.oracle.com/errata/ELSA-2026-500249.html
- https://git.kernel.org/stable/c/1215febd644c3e16f77e0f1799d89544dd57a754
- https://git.kernel.org/stable/c/2b70bebc709489d29a31ac2935aeffb8d5228395
- https://git.kernel.org/stable/c/590cc4d782487632a52f37c2171bee1eeea29627
- https://git.kernel.org/stable/c/6f7f22a8d244c2e586b8eb61c7585784b62aea01
- https://git.kernel.org/stable/c/7a89ad762fad53d56b7002d7ffc923a4b7f4006f
- https://git.kernel.org/stable/c/80c1e18473f63fd7c6a2bc9ad6f3d0a6cc4fb500
- https://git.kernel.org/stable/c/95b3f23d632490b5eb285b9fcf7284f2ac8f9872
- https://git.kernel.org/stable/c/f3790a6af9c7f47d454225cab9dc145270e48f62