CVE-2026-74263

net: wwan: t7xx: check skb_clone in control TX

State: Published
Severity: Not scored
Published: Aug 15, 2026
Updated: Aug 17, 2026
Reserved: Aug 15, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

net: wwan: t7xx: check skb_clone in control TX

t7xx_port_ctrl_tx() clones each skb fragment before passing it to the port transmit path. The clone is used immediately to set cloned->len, so an skb_clone() failure results in a NULL pointer dereference.

Check the clone before using it. If previous fragments were already queued, preserve the driver's existing partial-write behavior by returning the number of bytes submitted so far.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	36bd28c1cb0dbf48645cfe43159907fb3253b33a to before 7edd4db82f9429591de10be4c904c817f12ba029Affected 36bd28c1cb0dbf48645cfe43159907fb3253b33a to before 112490467586146d323cb7230b1d72137e36900cAffected 36bd28c1cb0dbf48645cfe43159907fb3253b33a to before f7aebaee2961bfcb86f282202d3dbd9b69db1a7cAffected 36bd28c1cb0dbf48645cfe43159907fb3253b33a to before 4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095Affected 36bd28c1cb0dbf48645cfe43159907fb3253b33a to before 05f789fa90d95d5771230e78453cedff2486039dAffected
LinuxLinux	6.4Affected before 6.4Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

36bd28c1cb0dbf48645cfe43159907fb3253b33a to before 7edd4db82f9429591de10be4c904c817f12ba029Affected
36bd28c1cb0dbf48645cfe43159907fb3253b33a to before 112490467586146d323cb7230b1d72137e36900cAffected
36bd28c1cb0dbf48645cfe43159907fb3253b33a to before f7aebaee2961bfcb86f282202d3dbd9b69db1a7cAffected
36bd28c1cb0dbf48645cfe43159907fb3253b33a to before 4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095Affected
36bd28c1cb0dbf48645cfe43159907fb3253b33a to before 05f789fa90d95d5771230e78453cedff2486039dAffected

LinuxLinux

6.4Affected
before 6.4Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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