CVE-2026-80689tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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().
Timeline
ID reserved
By Linux
- 2 days later
· 2 days later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected f984b51e0779a6dd30feedc41404013ca54e5d05 – < dc1b1a057b3bb901f83433700e604fe0ae67c5f2
- affected f984b51e0779a6dd30feedc41404013ca54e5d05 – < 6aee2d478545c089dd5d055d3c9f0c7ea034fb80
- affected f984b51e0779a6dd30feedc41404013ca54e5d05 – < 4e4ab09db7899d7f2d2293a18adf0fa200a27e73
- affected f984b51e0779a6dd30feedc41404013ca54e5d05 – < 2df964d141270c40f07547b0c2e0a51e2573d46d
- affected f984b51e0779a6dd30feedc41404013ca54e5d05 – < 876014b4eeb927146430e7591cf959a7ceb8d64a
- affected f984b51e0779a6dd30feedc41404013ca54e5d05 – < a20a0010eb6485f60cd64e15ebc85a4bd388642e
- affected f984b51e0779a6dd30feedc41404013ca54e5d05 – < 60234845142fddb27db89ebc00a65178421fb3a4
- affected f984b51e0779a6dd30feedc41404013ca54e5d05 – < 12b80cdbc54cf615b4717a4e8180063408091ea2
- affected 2.6.27
- unaffected < 2.6.27
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.103 – ≤ 6.12.*
- unaffected 6.18.44 – ≤ 6.18.*
- unaffected 7.1.8 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/dc1b1a057b3bb901f83433700e604fe0ae67c5f2 (opens in a new tab)
- https://git.kernel.org/stable/c/6aee2d478545c089dd5d055d3c9f0c7ea034fb80 (opens in a new tab)
- https://git.kernel.org/stable/c/4e4ab09db7899d7f2d2293a18adf0fa200a27e73 (opens in a new tab)
- https://git.kernel.org/stable/c/2df964d141270c40f07547b0c2e0a51e2573d46d (opens in a new tab)
- https://git.kernel.org/stable/c/876014b4eeb927146430e7591cf959a7ceb8d64a (opens in a new tab)
- https://git.kernel.org/stable/c/a20a0010eb6485f60cd64e15ebc85a4bd388642e (opens in a new tab)
- https://git.kernel.org/stable/c/60234845142fddb27db89ebc00a65178421fb3a4 (opens in a new tab)
- https://git.kernel.org/stable/c/12b80cdbc54cf615b4717a4e8180063408091ea2 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-67424 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-80689)Record last updated .