Not yet scoredPublished Aug 10, 2026

CVE-2026-68176tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev

Updated under an hour ago (Oct 26, 2026, 9:30 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev If the mmio_pipe_open() fails to find a PCI device, the hiter->dev will be assigned to NULL. The mmiotrace read() function dereferences the hiter->dev if hiter exists. Change the test of the read to not only check hiter being NULL, but also the hiter->dev before dereferencing it.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Aug 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from f984b51e0779a6dd30feedc41404013ca54e5d05 before c06470320f8156306986a831010cdc9f9f87cb50; from f984b51e0779a6dd30feedc41404013ca54e5d05 before 0d5aaf91a3d05f7f993401af27872a5fc0f26edc; from f984b51e0779a6dd30feedc41404013ca54e5d05 before 3635a9e8b453e658a49b39d025f35bbc6e58d0e2; from f984b51e0779a6dd30feedc41404013ca54e5d05 before faaf95135184208ee3ac6f33175c8d1800669dfc; from f984b51e0779a6dd30feedc41404013ca54e5d05 before 201a01102c529772168181190cb084471082cf5c; from f984b51e0779a6dd30feedc41404013ca54e5d05 before 8464427e1c177809a9488a97dfa2807d9dcf323b; from f984b51e0779a6dd30feedc41404013ca54e5d05 before 724cd84b0546c07806840fa658714488553d13a2; from f984b51e0779a6dd30feedc41404013ca54e5d05 before 144f29e85702234b23d2a62abf723e6a17eb5427	CNA record

References

References

https://git.kernel.org/stable/c/c06470320f8156306986a831010cdc9f9f87cb50
https://git.kernel.org/stable/c/0d5aaf91a3d05f7f993401af27872a5fc0f26edc
https://git.kernel.org/stable/c/3635a9e8b453e658a49b39d025f35bbc6e58d0e2
https://git.kernel.org/stable/c/faaf95135184208ee3ac6f33175c8d1800669dfc
https://git.kernel.org/stable/c/201a01102c529772168181190cb084471082cf5c
https://git.kernel.org/stable/c/8464427e1c177809a9488a97dfa2807d9dcf323b
https://git.kernel.org/stable/c/724cd84b0546c07806840fa658714488553d13a2
https://git.kernel.org/stable/c/144f29e85702234b23d2a62abf723e6a17eb5427

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.