CVE-2026-74545
In the Linux kernel, the following vulnerability has been resolved: rtase: fix double free of multi-frag skb on DMA map failure In rtase_start_xmit(), when the head buffer DMA mapping fails after rtase_xmit_frags() has mapped all fragments, the error path clears the fragment descriptors with rtase_tx_clear_range(), which frees the skb through the last-frag slot and accounts tx_dropped. Control then falls through to the common error label, which frees the same skb a second time and counts it again. Return right after clearing the fragments when the skb owns frags; the no-frag case still drops through and frees the head skb once.
Affected versions
Linux kernel versions
6.12
and later are affected. Fixed in
6.12.103,
6.18.44,
7.1.8,
7.2-rc6
and their respective stable series.
References
4 totalFrequently asked questions
-
What is CVE-2026-74545?
CVE-2026-74545 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.103, 6.18.44, 7.1.8 and others. CVE-2026-74545 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-74545?
Yes. CVE-2026-74545 has been patched. Fixed versions include 6.12.103, 6.18.44, 7.1.8 and others. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-74545 actively exploited?
No. CVE-2026-74545 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.