Answer in brief
CVE-2026-23002 records a Unknown severity vulnerability in lib/buildid: use __kernel_read() for sleepable context. 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.
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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ad41251c290dfe3c01472c94d2439a59de23fe97 <b11dfb7708f212b96c7973a474014c071aa02e05 || >=ad41251c290dfe3c01472c94d2439a59de23fe97 <568aeb3476c770a3863c755dd2a199c212434286 || >=ad41251c290dfe3c01472c94d2439a59de23fe97 <777a8560fd29738350c5094d4166fe5499452409 | b11dfb7708f212b96c7973a474014c071aa02e05, 568aeb3476c770a3863c755dd2a199c212434286, 777a8560fd29738350c5094d4166fe5499452409 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Jan 25, 2026
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: lib/buildid: use __kernel_read() for sleepable context Prevent a "BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio". For the sleepable context, convert freader to use __kernel_read() instead of direct page cache access via read_cache_folio(). This simplifies the faultable code path by using the standard kernel file reading interface which handles all the complexity of reading file data. At the moment we are not changing the code for non-sleepable context which uses filemap_get_folio() and only succeeds if the target folios are already in memory and up-to-date. The reason is to keep the patch simple and easier to backport to stable kernels. Syzbot repro does not crash the kernel anymore and the selftests run successfully. In the follow up we will make __kernel_read() with IOCB_NOWAIT work for non-sleepable contexts. In addition, I would like to replace the secretmem check with a more generic approach and will add fstest for the buildid code.
Quoted source text, attributed separately from HOL analysis.