Answer in brief
CVE-2026-23148 records a High severity (CVSS 7.5) vulnerability in nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference. 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 7.5. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=431e58d56fcb5ff1f9eb630724a922e0d2a941df <ee10b06980acca1d46e0fa36d6fb4a9578eab6e4 || >=190f4c2c863af7cc5bb354b70e0805f06419c038 <68207ceefd71cc74ce4e983fa9bd10c3122e349b || >=190f4c2c863af7cc5bb354b70e0805f06419c038 <0fcee2cfc4b2e16e62ff8e0cc2cd8dd24efad65e || 2e2028fcf924d1c6df017033c8d6e28b735a0508 || >=6.12.37 <6.12.69 || >=6.15.6 <6.16 | ee10b06980acca1d46e0fa36d6fb4a9578eab6e4, 68207ceefd71cc74ce4e983fa9bd10c3122e349b, 0fcee2cfc4b2e16e62ff8e0cc2cd8dd24efad65e, 6.12.69, 6.16 |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Feb 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 16, 2026
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference There is a race condition in nvmet_bio_done() that can cause a NULL pointer dereference in blk_cgroup_bio_start(): 1. nvmet_bio_done() is called when a bio completes 2. nvmet_req_complete() is called, which invokes req->ops->queue_response(req) 3. The queue_response callback can re-queue and re-submit the same request 4. The re-submission reuses the same inline_bio from nvmet_req 5. Meanwhile, nvmet_req_bio_put() (called after nvmet_req_complete) invokes bio_uninit() for inline_bio, which sets bio->bi_blkg to NULL 6. The re-submitted bio enters submit_bio_noacct_nocheck() 7. blk_cgroup_bio_start() dereferences bio->bi_blkg, causing a crash: BUG: kernel NULL pointer dereference, address: 0000000000000028 #PF: supervisor read access in kernel mode RIP: 0010:blk_cgroup_bio_start+0x10/0xd0 Call Trace: submit_bio_noacct_nocheck+0x44/0x250 nvmet_bdev_execute_rw+0x254/0x370 [nvmet] process_one_work+0x193/0x3c0 worker_thread+0x281/0x3a0 Fix this by reordering nvmet_bio_done() to call nvmet_req_bio_put() BEFORE nvmet_req_complete(). This ensures the bio is cleaned up before the request can be re-submitted, preventing the race condition.
Quoted source text, attributed separately from HOL analysis.