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High 7.8Published Jun 26, 2026

CVE-2026-53296mailbox: mailbox-test: free channels on probe error

Updated under an hour ago ()

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
Not given
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Linux
NVD analysis
Analyzed
Record last updated
Jun 26, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Linux Linux
linux:linux (from the name)
8ea4484d0c2bb4e2152261943fa1a3522654b1c7 builds before 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b; from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 before 15c4cc3850cfe1b973eb7b63c02314b267f06a64; from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 before 187069ccc3474516af32350e20d7e449160fa6de; from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 before 81c9e7e4030e71391ab479c4c6e17b64802577aa; 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 builds before 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701; from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 before 742001919653e7313b4e91780c5d108be1692365; 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 builds before 02beb178e2e159daeb8f992d7abb16a37da31664; from 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 before c02053a9055d5fdfd32432287cca8958db1d5bc5
CNA record
linux linux_kernel
linux:linux_kernel
from 4.4 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10; 7.1
NVD

References

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The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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