CVE-2026-53059

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to region_count overflow The local variable region_count in create_log_context() is declared as unsigned int (32-bit), but dm_sector_div_up() returns sector_t (64-bit). When a device-mapper target has a sufficiently large ti->len with a small region_size, the division result can exceed UINT_MAX. The truncated value is then used to calculate bitset_size, causing clean_bits, sync_bits, and recovering_bits to be allocated far smaller than needed for the actual number of regions. Subsequent l...

Affected product and versions

Product

Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8

Affected versions

>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 44ab8875ae4a2842bde2d756bed195d375e0debb, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < defe483e47173768c227532694dc78cb65db5f09, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3ec74da927b4e171a6fc0e77b1188ba4d019af51, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d4ac87567f86a55c3c92e9a5144dcd943a9772a1, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 12bd5b88e91a02785244ff1d20fb157e96e9cdc8, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b455903eed4558982be0811f5b7f44f6bbc4ff57, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4ec8323b9f0764a14d532b1ae9b87f8a9fecb867, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c20e36b7631d83e7535877f08af8b0af72c44b1a, >= 2.6.12, >= 2.6.12.1 < 5.10.258, >= 5.11 < 5.15.209, >= 5.16 < 6.1.175, >= 6.2 < 6.6.141, >= 6.7 < 6.12.91, >= 6.13 < 6.18.33, >= 6.19 < 7.0.10, 2.6.12

Fixed versions

5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-190, CWE-787