{"id":"CVE-2026-72453","title":"regcache: Do not overwrite error code when finalizing cache after error","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nregcache: Do not overwrite error code when finalizing cache after error\n\nDuring regcache initialization, if an error occurs in the\ncache_ops->populate callback, and if …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= b498b70a8174bcb4e801d4d794a49f2d143c5c9f < bae057687f61580dd897411cd749da22a7740647","Linux >= 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 < 9f171aa115ec76be02c76c5765cd2c865279e34a","Linux >= 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 < 9108f7fa493b4c88cbc09503e0c164244456bad5","Linux 6.19"],"published":"2026-08-15","updated":"2026-10-26","sourceUpdated":"2026-10-26T15:12:58.356Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72453","references":[{"url":"https://git.kernel.org/stable/c/bae057687f61580dd897411cd749da22a7740647"},{"url":"https://git.kernel.org/stable/c/9f171aa115ec76be02c76c5765cd2c865279e34a"},{"url":"https://git.kernel.org/stable/c/9108f7fa493b4c88cbc09503e0c164244456bad5"}],"tags":["cve.org"],"epss":0.00198,"epssPercentile":0.09435,"ingestedAt":"2026-10-26T15:29:30.497Z","slug":"CVE-2026-72453","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nregcache: Do not overwrite error code when finalizing cache after error\n\nDuring regcache initialization, if an error occurs in the\ncache_ops->populate callback, and if cache operations include an exit\ncallback, the error code from populate() is overwritten with the return\nvalue from exit(). This hides the error condition from the caller of\nregcache_init(), and can cause NULL pointer dereferences when the regcache\nis later accessed.\n\n## Affected\n\n- `Linux >= b498b70a8174bcb4e801d4d794a49f2d143c5c9f < bae057687f61580dd897411cd749da22a7740647`\n- `Linux >= 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 < 9f171aa115ec76be02c76c5765cd2c865279e34a`\n- `Linux >= 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 < 9108f7fa493b4c88cbc09503e0c164244456bad5`\n- `Linux 6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}