EUVD-2026-38896
GHSA-fw2f-r9xj-6gr9
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Local attack, low privileges to trigger USB Type-C events; impact is kernel crash only, no confidentiality or integrity exposure.
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
5DescriptionNVD
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: Fix error pointer dereference
The variable tps->partner is checked for an error pointer and then if it is, it sends an error message but does not return and then immediately dereferenced a few lines below:
tps->partner = typec_register_partner(tps->port, &desc); if (IS_ERR(tps->partner)) dev_warn(tps->dev, "%s: failed to register partnet\n", __func__);
if (desc.identity) { typec_partner_set_identity(tps->partner); cd321x->cur_partner_identity = st.partner_identity; }
Add early return and fix spelling mistake in error message.
Detected by Smatch: drivers/usb/typec/tipd/core.c:827 cd321x_update_work() error: 'tps->partner' dereferencing possible ERR_PTR()
AnalysisAI
Error pointer dereference in the Linux kernel USB Type-C TI Power Delivery (tipd) driver allows a local low-privileged user to crash the kernel (denial of service) on systems with TI CD321x or TPS6598x USB Type-C controller hardware. The flaw in cd321x_update_work() at drivers/usb/typec/tipd/core.c:827 logs a warning when typec_register_partner() fails but omits an early return, causing a subsequent unconditional dereference of the error pointer via typec_partner_set_identity(). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local access with at least low-privilege credentials (PR:L per CVSS) on a Linux system running a kernel version between the introduction commit 82432bbfb9e83b7e81d04660fe129b99a29b2ac2 and the relevant fix commit for the installed branch. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.5 (Medium) with vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H accurately reflects a locally-exploitable denial-of-service only, with no confidentiality or integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A local user with low-privilege credentials on a Linux system equipped with a TI CD321x USB Type-C Power Delivery controller connects a USB Type-C device that causes `typec_register_partner()` to fail. The kernel tipd driver logs a warning but does not return early, then dereferences the error pointer in `typec_partner_set_identity()`, triggering a kernel oops or panic and crashing the system. … |
| Remediation | Upgrade to Linux kernel 6.18.33, 7.0.10, or 7.1, which contain the upstream fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Denial Of Service
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External POC / Exploit Code
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