CVE-2026-80689
CVE CVE-2026-80689EUVD EUVD-2026-67424Published 2026-08-28T06:52:53.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions mmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into tr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map(). If these functions are invoked while mmio_trace_array is NULL (e.g. before initialization or after disabled), accessing tr->array_buffer.buffer will result in a NULL pointer dereference crash. Fix this by adding an explicit NULL check for tr at the beginning of __trace_mmiotrace_rw() and __trace_mmiotrace_map().
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux f984b51e0779a6dd30feedc41404013ca54e5d05 <12b80cdbc54cf615b4717a4e8180063408091ea2; f984b51e0779a6dd30feedc41404013ca54e5d05 <876014b4eeb927146430e7591cf959a7ceb8d64a; 2.6.27; f984b51e0779a6dd30feedc41404013ca54e5d05 <60234845142fddb27db89ebc00a65178421fb3a4; patch: 6.18.44; patch: 7.2; patch: 6.12.103; patch: 0; f984b51e0779a6dd30feedc41404013ca54e5d05 <a20a0010eb6485f60cd64e15ebc85a4bd388642e; patch: 7.1.8
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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