Answer in brief
CVE-2026-46046 records a Unknown severity vulnerability in ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all(). 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 <dd98a5603a212ea9c96c6982ccdbcc748fdb9a56 || >=f737418b6de31c962c7192777ee4018906975383 <153ab2c52355fbebcae622db8e7b506492c73a29 || >=cf9291a3449b04688b81e32621e88de8f4314b54 <b706d00206a9e82362a9633efbd8b5775650169b || >=362a90cecd36e8a5c415966d0b75b04a0270e4dd <1bc1107a3a403a6d440673ed6666f7b07ef868a8 || >=eb59cc31b6ea076021d14b04e7faab1636b87d0e <097227f1ffe1a85bc3c359f81c71e3d40e06e920 || >=c8e008b60492cf6fd31ef127aea6d02fd3d314cd <1e6b0a69bf2c9c819255c7566e4355536d81d9cf || >=c8e008b60492cf6fd31ef127aea6d02fd3d314cd <f072906688933bf47fabbaf63560be03357c8298 || >=c8e008b60492cf6fd31ef127aea6d02fd3d314cd <77d059519382bd66283e6a4e83ee186e87e7708f || 6aff941cb0f7d0c897c3698ad2e30672709135e3 || 3bc6317033f365ce578eb6039445fb66162722fd || 836e625b03a666cf93ff5be328c8cb30336db872 || >=5.10.237 <5.10.258 || >=5.15.181 <5.15.209 || >=6.1.135 <6.1.175 || >=6.6.88 <6.6.140 || >=6.12.24 <6.12.86 || >=5.4.293 <5.5 || >=6.13.12 <6.14 || >=6.14.3 <6.15 | dd98a5603a212ea9c96c6982ccdbcc748fdb9a56, 153ab2c52355fbebcae622db8e7b506492c73a29, b706d00206a9e82362a9633efbd8b5775650169b, 1bc1107a3a403a6d440673ed6666f7b07ef868a8, 097227f1ffe1a85bc3c359f81c71e3d40e06e920, 1e6b0a69bf2c9c819255c7566e4355536d81d9cf, f072906688933bf47fabbaf63560be03357c8298, 77d059519382bd66283e6a4e83ee186e87e7708f, 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 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
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 8, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all() The commit c8e008b60492 ("ext4: ignore xattrs past end") introduced a refcount leak in when block_csum is false. ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to get iloc.bh, but never releases it with brelse().
Quoted source text, attributed separately from HOL analysis.