CVE-2026-68176
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 < c06470320f8156306986a831010cdc9f9f87cb50 | affected |
| Linux | Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 < 0d5aaf91a3d05f7f993401af27872a5fc0f26edc | affected |
| Linux | Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 < 3635a9e8b453e658a49b39d025f35bbc6e58d0e2 | affected |
| Linux | Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 < faaf95135184208ee3ac6f33175c8d1800669dfc | affected |
| Linux | Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 < 201a01102c529772168181190cb084471082cf5c | affected |
| Linux | Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 < 8464427e1c177809a9488a97dfa2807d9dcf323b | affected |
| Linux | Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 < 724cd84b0546c07806840fa658714488553d13a2 | affected |
| Linux | Linux | f984b51e0779a6dd30feedc41404013ca54e5d05 < 144f29e85702234b23d2a62abf723e6a17eb5427 | affected |
| Linux | Linux | 2.6.27 | affected |
| Linux | Linux | 0 < 2.6.27 | unaffected |
| Linux | Linux | 5.10.265 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.216 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.183 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.148 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.101 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.42 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.6 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
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
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