CVE-2026-68176
Unknown
Description
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedAug 10, 2026
First seenAug 10, 2026
How to fix
Update
- Linux Linuxc06470320f8156306986a831010cdc9f9f87cb50, 0d5aaf91a3d05f7f993401af27872a5fc0f26edc, 3635a9e8b453e658a49b39d025f35bbc6e58d0e2, faaf95135184208ee3ac6f33175c8d1800669dfc, 201a01102c529772168181190cb084471082cf5c, 8464427e1c177809a9488a97dfa2807d9dcf323b, 724cd84b0546c07806840fa658714488553d13a2, 144f29e85702234b23d2a62abf723e6a17eb5427 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 ≤ v < c06470320f8156306986a831010cdc9f9f87cb50, f984b51e0779a6dd30feedc41404013ca54e5d05 ≤ v < 0d5aaf91a3d05f7f993401af27872a5fc0f26edc, f984b51e0779a6dd30feedc41404013ca54e5d05 ≤ v < 3635a9e8b453e658a49b39d025f35bbc6e58d0e2, f984b51e0779a6dd30feedc41404013ca54e5d05 ≤ v < faaf95135184208ee3ac6f33175c8d1800669dfc, f984b51e0779a6dd30feedc41404013ca54e5d05 ≤ v < 201a01102c529772168181190cb084471082cf5c, f984b51e0779a6dd30feedc41404013ca54e5d05 ≤ v < 8464427e1c177809a9488a97dfa2807d9dcf323b, f984b51e0779a6dd30feedc41404013ca54e5d05 ≤ v < 724cd84b0546c07806840fa658714488553d13a2, f984b51e0779a6dd30feedc41404013ca54e5d05 ≤ v < 144f29e85702234b23d2a62abf723e6a17eb5427, 2.6.27 | c06470320f8156306986a831010cdc9f9f87cb50, 0d5aaf91a3d05f7f993401af27872a5fc0f26edc, 3635a9e8b453e658a49b39d025f35bbc6e58d0e2, faaf95135184208ee3ac6f33175c8d1800669dfc, 201a01102c529772168181190cb084471082cf5c, 8464427e1c177809a9488a97dfa2807d9dcf323b, 724cd84b0546c07806840fa658714488553d13a2, 144f29e85702234b23d2a62abf723e6a17eb5427 |
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