CVE-2026-53296

mailbox: mailbox-test: free channels on probe error

HIGH

7.8

CVSS Score

Published: June 26, 2026 at 07:40 PM UTC

Updated: July 8, 2026 at 04:09 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.4 ≤ v < 5.10.2584.4 ≤ v < 5.15.2094.4 ≤ v < 6.1.1754.4 ≤ v < 6.12.914.4 ≤ v < 6.18.334.4 ≤ v < 6.6.1414.4 ≤ v < 7.0.104.4 ≤ v < 7.15.11 ≤ v < 5.15.2095.16 ≤ v < 6.1.1756.13 ≤ v < 6.18.336.19 ≤ v < 7.0.106.2 ≤ v < 6.6.1416.7 ≤ v < 6.12.917.1 rc18ea4484d0c2bb4e2152261943fa1a3522654b1c7

Vendor states this is fixed in 02beb178e2e159daeb8f992d7abb16a37da31664 (fixed)

Vendor states this is fixed in 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b (fixed)

Vendor states this is fixed in 15c4cc3850cfe1b973eb7b63c02314b267f06a64 (fixed)

Vendor states this is fixed in 187069ccc3474516af32350e20d7e449160fa6de (fixed)

Vendor states this is fixed in 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701 (fixed)

Vendor states this is fixed in 742001919653e7313b4e91780c5d108be1692365 (fixed)

Vendor states this is fixed in 81c9e7e4030e71391ab479c4c6e17b64802577aa (fixed)

Vendor states this is fixed in c02053a9055d5fdfd32432287cca8958db1d5bc5 (fixed)

Vendor states this is fixed in 4.4 (unaffected)

Vendor states this is fixed in 5.10.258 (unaffected)

Vendor states this is fixed in 5.15.209 (unaffected)

Vendor states this is fixed in 6.1.175 (unaffected)