Answer in brief
CVE-2023-53450 records a Medium severity (CVSS 5.5) vulnerability in ext4: remove a BUG_ON in ext4_mb_release_group_pa(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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 5.5. 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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c9de560ded61faa5b754137b7753da252391c55a <d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b || >=c9de560ded61faa5b754137b7753da252391c55a <ef16d8a1798db1a1604ac44ca1bd73ec6bebf483 || >=c9de560ded61faa5b754137b7753da252391c55a <185062a21976fbc38f2efd296951b02c4500cf65 || >=c9de560ded61faa5b754137b7753da252391c55a <b0fc279de4bf17e1710bb7e83906538ff8f11111 || >=c9de560ded61faa5b754137b7753da252391c55a <978e5e9111af18741449b81fefd531a622dd969a || >=c9de560ded61faa5b754137b7753da252391c55a <d87a4e4094c9879fc8acdff8ce59fdffa979c8e0 || >=c9de560ded61faa5b754137b7753da252391c55a <bf2a16eb4e6d06124bd8436d4546f61539a65f29 || >=c9de560ded61faa5b754137b7753da252391c55a <53c14e7cc2257191ba15425c15638fc4f8abb92b || >=c9de560ded61faa5b754137b7753da252391c55a <463808f237cf73e98a1a45ff7460c2406a150a0b | d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b, ef16d8a1798db1a1604ac44ca1bd73ec6bebf483, 185062a21976fbc38f2efd296951b02c4500cf65, b0fc279de4bf17e1710bb7e83906538ff8f11111, 978e5e9111af18741449b81fefd531a622dd969a, d87a4e4094c9879fc8acdff8ce59fdffa979c8e0, bf2a16eb4e6d06124bd8436d4546f61539a65f29, 53c14e7cc2257191ba15425c15638fc4f8abb92b, 463808f237cf73e98a1a45ff7460c2406a150a0b |
| Linux/Linuxgeneric | 2.6.25 | Not reported |
Published upstream
Oct 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUG_ON in ext4_mb_release_group_pa() If a malicious fuzzer overwrites the ext4 superblock while it is mounted such that the s_first_data_block is set to a very large number, the calculation of the block group can underflow, and trigger a BUG_ON check. Change this to be an ext4_warning so that we don't crash the kernel.
Quoted source text, attributed separately from HOL analysis.