Description
In the Linux kernel, the following vulnerability has been resolved: dm mirror: fix integer overflow in create_dirty_log() The argument count calculation in create_dirty_log() performs `*args_used = 2 + param_count` before validating against argc. When a user provides a param_count close to UINT_MAX via the device mapper table string, this unsigned addition wraps around to a small value, causing the subsequent `argc < *args_used` check to be bypassed. The overflowed param_count is then passed as argc to dm_dirty_log_create(), where it can cause out-of-bounds reads on the argv array. Fix by comparing param_count against argc - 2 before performing the addition, following the same pattern used by parse_features() in the same file. Since argc >= 2 is already guaranteed, the subtraction is safe.
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before e5e0ae3237584ebef510366c4cb3d5cc7c22b610
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 249c831183fb806c8e3b14c7c4c1d2fb68cf37fb
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before ae59b3025609d5a0a39cf5b2b94e2467f6231573
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 35f6b3281efd44d19110574663bc17a610bc73b9
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 47dad9eea75d33212d3d2cea10e7ed6a1bfc0713
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 87c99a50e0fdc68a5b9b52a94d49452cd3ff02ca
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 17a08791d428885d00e510864283a7b839792368
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 4c788c6f921b22f9b6c3f316c4a071c05683e7de
2.6.12
Any version before 2.6.12
5.10.258 (semver)
5.15.209 (semver)
6.1.175 (semver)
6.6.140 (semver)
6.12.86 (semver)
6.18.27 (semver)
7.0.4 (semver)
7.1-rc1 (original_commit_for_fix)
References
git.kernel.org/...c/e5e0ae3237584ebef510366c4cb3d5cc7c22b610
git.kernel.org/...c/249c831183fb806c8e3b14c7c4c1d2fb68cf37fb
git.kernel.org/...c/ae59b3025609d5a0a39cf5b2b94e2467f6231573
git.kernel.org/...c/35f6b3281efd44d19110574663bc17a610bc73b9
git.kernel.org/...c/47dad9eea75d33212d3d2cea10e7ed6a1bfc0713
git.kernel.org/...c/87c99a50e0fdc68a5b9b52a94d49452cd3ff02ca
git.kernel.org/...c/17a08791d428885d00e510864283a7b839792368
git.kernel.org/...c/4c788c6f921b22f9b6c3f316c4a071c05683e7de