Answer in brief
CVE-2026-89601 records a High severity (CVSS 8.8) vulnerability in ext2: Fix lost inode updates for IS_SYNC inodes. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5efb3350230fef831167740e69e6db2861101186 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a || >=0 <7.2.4 | 5efb3350230fef831167740e69e6db2861101186, 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a, 7.2.4 |
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5efb3350230fef831167740e69e6db2861101186 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a | 5efb3350230fef831167740e69e6db2861101186, 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5481766125041e71662f2e32ee0e91ad5f4d07f4 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5efb3350230fef831167740e69e6db2861101186 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a | 5481766125041e71662f2e32ee0e91ad5f4d07f4, 5efb3350230fef831167740e69e6db2861101186, 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a |
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b879565effd88fc119c2efea3f3868a9997ed9ba || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e54de654423bee98d1ba50379b09daf97c7854a6 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5481766125041e71662f2e32ee0e91ad5f4d07f4 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5efb3350230fef831167740e69e6db2861101186 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a | b879565effd88fc119c2efea3f3868a9997ed9ba, e54de654423bee98d1ba50379b09daf97c7854a6, 5481766125041e71662f2e32ee0e91ad5f4d07f4, 5efb3350230fef831167740e69e6db2861101186, 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
In the Linux kernel, the following vulnerability has been resolved: ext2: Fix lost inode updates for IS_SYNC inodes ext2_setsize() and ext2_xattr_set2() had a construct like: if (IS_SYNC(inode)) { sync_inode_metadata(inode, 1); } else { mark_inode_dirty(inode); } which leads to lost inode updates for IS_SYNC inodes because sync_inode_metadata() does anything only if the inode is already dirty and hence inode updates may be simply lost. Fix the problem by unconditionally marking the inode dirty and *then* call sync_inode_metadata().
Quoted source text, attributed separately from HOL analysis.