CVE-2026-72225

CVE CVE-2026-72225EUVD EUVD-2026-59124Published 2026-08-15T05:54:17.000ZLast changed 2026-08-17T05:41:45.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() jbd2_journal_initialize_fast_commit() validates journal capacity by checking (journal->j_last - num_fc_blks < JBD2_MIN_JOURNAL_BLOCKS). Both j_last and num_fc_blks are unsigned, so when num_fc_blks exceeds j_last the subtraction wraps to a large value, bypassing the bounds check. The resulting underflow corrupts j_last, j_fc_first, and j_free, leading to journal abort. Fix by checking num_fc_blks against j_last before the subtraction, returning -EFSCORRUPTED.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.1.5; 6866d7b3f2bb4f011041ba54c98b1584497fe2fd <a58fc10adf503969fec2007b5afe8987258046c4; patch: 6.12.97; 6866d7b3f2bb4f011041ba54c98b1584497fe2fd <fb9b49618ed7296ebfad62a3835da8945f727001; patch: 7.2; 6866d7b3f2bb4f011041ba54c98b1584497fe2fd <4450dcaadf7d4aae8b6e4223b5d6ee4eb77097a9; patch: 0; patch: 5.15.212; 6866d7b3f2bb4f011041ba54c98b1584497fe2fd <289a2ca0c9b7eae74f93fc213b0b971669b8683d; 6866d7b3f2bb4f011041ba54c98b1584497fe2fd <78955fdce8ff654e6d33a2fa90882a1e7eb26330; 6866d7b3f2bb4f011041ba54c98b1584497fe2fd <e144ad0250f77e23e28949587b8b57e40dc3b512; patch: 6.6.145; 6866d7b3f2bb4f011041ba54c98b1584497fe2fd <4b48dcb88bb9117e3d3f051175a9a8b7cff7f8b6; patch: 6.18.40; patch: 6.1.178; 5.10

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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