Answer in brief
CVE-2026-53261 records a Medium severity (CVSS 5.5) vulnerability in devlink: Release nested relation on devlink free. 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 5.5. 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 | >=c137743bce02b18c1537d4681aa515f7b80bf0a8 <a9137286884703113b1c9e6403bd6d7d97b14754 || >=c137743bce02b18c1537d4681aa515f7b80bf0a8 <927f96861f939c0b517d13ed27bf4fabbfc1cfb3 || >=c137743bce02b18c1537d4681aa515f7b80bf0a8 <11324d52b0c63f4f202b35793c6507a575e9a689 || >=c137743bce02b18c1537d4681aa515f7b80bf0a8 <3522b21fd7e1863d0734537737bd59f1b90d0190 | a9137286884703113b1c9e6403bd6d7d97b14754, 927f96861f939c0b517d13ed27bf4fabbfc1cfb3, 11324d52b0c63f4f202b35793c6507a575e9a689, 3522b21fd7e1863d0734537737bd59f1b90d0190 |
| Linux/Linuxgeneric | 6.7 | Not reported |
Published upstream
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
In the Linux kernel, the following vulnerability has been resolved: devlink: Release nested relation on devlink free devlink relation state is normally released from devl_unregister(), which calls devlink_rel_put(). This misses devlink instances that get a nested relation before registration and then fail probe before devl_register() is reached. That flow can happen for SFs. The child devlink gets linked to its parent before registration, then a later probe error calls devlink_free() directly. Since the instance was never registered, devl_unregister() is not called and devlink->rel is leaked. Release any pending relation from devlink_free() as well. The registered path is unchanged because devl_unregister() already clears devlink->rel before devlink_free() runs.
Quoted source text, attributed separately from HOL analysis.