net: wwan: t7xx: check skb_clone in control TX
Published Aug 15, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.21%
Description
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.
Affected products
-
Affected
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
-
Affected
- 6.4
Unaffected
- ≥ 0, < 6.4
- ≥ 6.12.97, ≤ 6.12.*
- ≥ 6.18.40, ≤ 6.18.*
- ≥ 6.6.145, ≤ 6.6.*
- ≥ 7.1.5, ≤ 7.1.*
- 7.2
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
No data.
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (11)
- https://access.redhat.com/security/cve/CVE-2026-74263 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2516762 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-59410 Advisory
- https://git.kernel.org/stable/c/05f789fa90d95d5771230e78453cedff2486039d
- https://git.kernel.org/stable/c/112490467586146d323cb7230b1d72137e36900c
- https://git.kernel.org/stable/c/4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095
- https://git.kernel.org/stable/c/7edd4db82f9429591de10be4c904c817f12ba029
- https://git.kernel.org/stable/c/f7aebaee2961bfcb86f282202d3dbd9b69db1a7c
- https://lore.kernel.org/linux-cve-announce/2026081542-CVE-2026-74263-6a02@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-74263
- https://www.cve.org/CVERecord?id=CVE-2026-74263
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
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GitHub
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