Answer in brief
CVE-2025-68820 records a Unknown severity vulnerability in ext4: xattr: fix null pointer deref in ext4_raw_inode(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (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.
A CVSS score is not reported in the current record. 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), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 <b72a3476f0c97d02f63a6e9fff127348d55436f6 || >=f737418b6de31c962c7192777ee4018906975383 <3d8d22e75f7edfa0b30ff27330fd6a1285d594c3 || >=cf9291a3449b04688b81e32621e88de8f4314b54 <190ad0f22ba49f1101182b80e3af50ca2ddfe72f || >=362a90cecd36e8a5c415966d0b75b04a0270e4dd <b5d942922182e82724b7152cb998f540132885ec || >=eb59cc31b6ea076021d14b04e7faab1636b87d0e <5b154e901fda2e98570b8f426a481f5740097dc2 || >=c8e008b60492cf6fd31ef127aea6d02fd3d314cd <ce5f54c065a4a7cbb92787f4f140917112350142 || >=c8e008b60492cf6fd31ef127aea6d02fd3d314cd <b97cb7d6a051aa6ebd57906df0e26e9e36c26d14 || 6aff941cb0f7d0c897c3698ad2e30672709135e3 || 3bc6317033f365ce578eb6039445fb66162722fd || 836e625b03a666cf93ff5be328c8cb30336db872 || >=5.10.237 <5.10.248 || >=5.15.181 <5.15.198 || >=6.1.135 <6.1.160 || >=6.6.88 <6.6.120 || >=6.12.24 <6.12.64 || >=5.4.293 <5.5 || >=6.13.12 <6.14 || >=6.14.3 <6.15 | b72a3476f0c97d02f63a6e9fff127348d55436f6, 3d8d22e75f7edfa0b30ff27330fd6a1285d594c3, 190ad0f22ba49f1101182b80e3af50ca2ddfe72f, b5d942922182e82724b7152cb998f540132885ec, 5b154e901fda2e98570b8f426a481f5740097dc2, ce5f54c065a4a7cbb92787f4f140917112350142, b97cb7d6a051aa6ebd57906df0e26e9e36c26d14, 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 5.5, 6.14, 6.15 |
| Linux/Linuxgeneric | 6.15 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
Jan 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: xattr: fix null pointer deref in ext4_raw_inode() If ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED), iloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all() lacks error checking, this will lead to a null pointer dereference in ext4_raw_inode(), called right after ext4_get_inode_loc(). Found by Linux Verification Center (linuxtesting.org) with SVACE.
Quoted source text, attributed separately from HOL analysis.