CVE-2026-53296 is a vulnerability in Linux Kernel
Published on June 26, 2026
mailbox: mailbox-test: free channels on probe error
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.
Products Associated with CVE-2026-53296
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Affected Versions
Linux:- Version 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 and below 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b is affected.
- Version 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 and below 15c4cc3850cfe1b973eb7b63c02314b267f06a64 is affected.
- Version 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 and below 187069ccc3474516af32350e20d7e449160fa6de is affected.
- Version 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 and below 81c9e7e4030e71391ab479c4c6e17b64802577aa is affected.
- Version 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 and below 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701 is affected.
- Version 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 and below 742001919653e7313b4e91780c5d108be1692365 is affected.
- Version 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 and below 02beb178e2e159daeb8f992d7abb16a37da31664 is affected.
- Version 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 and below c02053a9055d5fdfd32432287cca8958db1d5bc5 is affected.
- Version 4.4 is affected.
- Before 4.4 is unaffected.
- Version 5.10.258, <= 5.10.* is unaffected.
- Version 5.15.209, <= 5.15.* is unaffected.
- Version 6.1.175, <= 6.1.* is unaffected.
- Version 6.6.141, <= 6.6.* is unaffected.
- Version 6.12.91, <= 6.12.* is unaffected.
- Version 6.18.33, <= 6.18.* is unaffected.
- Version 7.0.10, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.