CVE-2026-74263
CVE-2026-74263: 1 tracked advisory record across Red Hat. Compare vendor sources.
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Red Hat
1 advisory- Advisory severityMedium5.5
Medium [CVE-2026-74263] check skb_clone in control TX
CVE-2026-74263Source published Source updated
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. If previous fragments were already queued, preserve the driver's existing partial-write behavior by returning the number of bytes submitted so far. A flaw was found in the Linux kernel's Wireless Wide Area Network (WWAN) t7xx driver. The `t7xx_port_ctrl_tx()` function, which handles control transmissions, fails to validate the return value of `skb_clone()`. An attacker with local access could exploit this by triggering a scenario where `skb_clone()` returns a NULL pointer…
- Affected products in this advisory
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- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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