Description
In the Linux kernel, the following vulnerability has been resolved: iommufd: Don't overflow during division for dirty tracking If pgshift is 63 then BITS_PER_TYPE(*bitmap->bitmap) * pgsize will overflow to 0 and this triggers divide by 0. In this case the index should just be 0, so reorganize things to divide by shift and avoid hitting any overflows.
Product status
58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 (git) before 07105e61882ff4a7d58db63cc5f9e90c6c60506c
58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 (git) before 4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69
58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 (git) before de7f2c67ceb1941b05b04ac35458a03e93cc57b1
58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 (git) before dbf316fc90aa954dcd5440817f4b944627ed63e0
58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 (git) before cb30dfa75d55eced379a42fd67bd5fb7ec38555e
6.1
Any version before 6.1
6.1.159 (semver)
6.6.117 (semver)
6.12.58 (semver)
6.17.8 (semver)
6.18 (original_commit_for_fix)
References
git.kernel.org/...c/07105e61882ff4a7d58db63cc5f9e90c6c60506c
git.kernel.org/...c/4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69
git.kernel.org/...c/de7f2c67ceb1941b05b04ac35458a03e93cc57b1
git.kernel.org/...c/dbf316fc90aa954dcd5440817f4b944627ed63e0
git.kernel.org/...c/cb30dfa75d55eced379a42fd67bd5fb7ec38555e
