CVE-2026-53296 PUBLISHED

mailbox: mailbox-test: free channels on probe error

Assigner: Linux
Reserved: 09.06.2026 Published: 26.06.2026 Updated: 26.06.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 to 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b (excl.)
  • affected from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 to 15c4cc3850cfe1b973eb7b63c02314b267f06a64 (excl.)
  • affected from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 to 187069ccc3474516af32350e20d7e449160fa6de (excl.)
  • affected from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 to 81c9e7e4030e71391ab479c4c6e17b64802577aa (excl.)
  • affected from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 to 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701 (excl.)
  • affected from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 to 742001919653e7313b4e91780c5d108be1692365 (excl.)
  • affected from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 to 02beb178e2e159daeb8f992d7abb16a37da31664 (excl.)
  • affected from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 to c02053a9055d5fdfd32432287cca8958db1d5bc5 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 4.4 is affected
  • unaffected from 0 to 4.4 (excl.)
  • unaffected from 5.10.258 to 5.10.* (incl.)
  • unaffected from 5.15.209 to 5.15.* (incl.)
  • unaffected from 6.1.175 to 6.1.* (incl.)
  • unaffected from 6.6.141 to 6.6.* (incl.)
  • unaffected from 6.12.91 to 6.12.* (incl.)
  • unaffected from 6.18.33 to 6.18.* (incl.)
  • unaffected from 7.0.10 to 7.0.* (incl.)
  • unaffected from 7.1 to * (incl.)

References