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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < e5e0ae3237584ebef510366c4cb3d5cc7c22b610affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 249c831183fb806c8e3b14c7c4c1d2fb68cf37fbaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ae59b3025609d5a0a39cf5b2b94e2467f6231573affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 35f6b3281efd44d19110574663bc17a610bc73b9affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 47dad9eea75d33212d3d2cea10e7ed6a1bfc0713affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 87c99a50e0fdc68a5b9b52a94d49452cd3ff02caaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 17a08791d428885d00e510864283a7b839792368affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 4c788c6f921b22f9b6c3f316c4a071c05683e7deaffected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.140 to ≤ 6.6.*unaffected6.12.86 to ≤ 6.12.*unaffected6.18.27 to ≤ 6.18.*unaffected7.0.4 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/e5e0ae3237584ebef510366c4cb3d5cc7c22b610 ↗
- https://git.kernel.org/stable/c/249c831183fb806c8e3b14c7c4c1d2fb68cf37fb ↗
- https://git.kernel.org/stable/c/ae59b3025609d5a0a39cf5b2b94e2467f6231573 ↗
- https://git.kernel.org/stable/c/35f6b3281efd44d19110574663bc17a610bc73b9 ↗
- https://git.kernel.org/stable/c/47dad9eea75d33212d3d2cea10e7ed6a1bfc0713 ↗
- https://git.kernel.org/stable/c/87c99a50e0fdc68a5b9b52a94d49452cd3ff02ca ↗
- https://git.kernel.org/stable/c/17a08791d428885d00e510864283a7b839792368 ↗
- https://git.kernel.org/stable/c/4c788c6f921b22f9b6c3f316c4a071c05683e7de ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗