CVE-2026-90427
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
iommu/tegra241-cmdqv: Don't fall back to a freed smmu after devm_krealloc()
__tegra241_cmdqv_probe() uses devm_krealloc() to grow @smmu into the larger tegra241_cmdqv, which frees the original @smmu once it relocates. A failure after that returned NULL, and the caller then dereferenced the freed @smmu on its fallback path.
Return an int and take @smmu by reference instead, then update *smmu to the reallocated pointer after devm_krealloc() succeeds, so the caller and its fallback path both use the live @smmu rather than the freed original.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 < 86197679b293f0601c3331d545f99a70a7780aa9 | affected |
| Linux | Linux | 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 < d4d05f55e9da646ec03adfa77260eb46f4163749 | affected |
| Linux | Linux | 6.12 | affected |
| Linux | Linux | 0 < 6.12 | unaffected |
| Linux | Linux | 7.2.6 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/86197679b293f0601c3331d545f99a70a7780aa9
- https://git.kernel.org/stable/c/d4d05f55e9da646ec03adfa77260eb46f4163749
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