Answer in brief
CVE-2026-53296 records a High severity (CVSS 7.8) vulnerability in mailbox: mailbox-test: free channels on probe error. 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 7.8. 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 | >=8ea4484d0c2bb4e2152261943fa1a3522654b1c7 <0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b || >=8ea4484d0c2bb4e2152261943fa1a3522654b1c7 <15c4cc3850cfe1b973eb7b63c02314b267f06a64 || >=8ea4484d0c2bb4e2152261943fa1a3522654b1c7 <187069ccc3474516af32350e20d7e449160fa6de || >=8ea4484d0c2bb4e2152261943fa1a3522654b1c7 <81c9e7e4030e71391ab479c4c6e17b64802577aa || >=8ea4484d0c2bb4e2152261943fa1a3522654b1c7 <6c6ce2ccb4fcf1617fec83f91b21aa0265f30701 || >=8ea4484d0c2bb4e2152261943fa1a3522654b1c7 <742001919653e7313b4e91780c5d108be1692365 || >=8ea4484d0c2bb4e2152261943fa1a3522654b1c7 <02beb178e2e159daeb8f992d7abb16a37da31664 || >=8ea4484d0c2bb4e2152261943fa1a3522654b1c7 <c02053a9055d5fdfd32432287cca8958db1d5bc5 | 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b, 15c4cc3850cfe1b973eb7b63c02314b267f06a64, 187069ccc3474516af32350e20d7e449160fa6de, 81c9e7e4030e71391ab479c4c6e17b64802577aa, 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701, 742001919653e7313b4e91780c5d108be1692365, 02beb178e2e159daeb8f992d7abb16a37da31664, c02053a9055d5fdfd32432287cca8958db1d5bc5 |
| Linux/Linuxgeneric | 4.4 | Not reported |
Published upstream
Jun 26, 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 26, 2026
In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: free channels on probe error On probe error, free the previously obtained channels. This not only prevents a leak, but also UAF scenarios because the client structure will be removed nonetheless because it was allocated with devm.
Quoted source text, attributed separately from HOL analysis.