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.
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
Jul 14, 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.
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
Jul 14, 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.