# CVE-2024-50281: linux: In the Linux kernel, the following vulnerability has been resolved:  KEYS: trusted: dcp: fix NULL dereference in AEAD...

CVE-2024-50281 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-50281, released November 19, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-50281
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 19, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  KEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation  When sealing or unsealing a key blob we currently do not wait for the AEAD cipher operation to finish and simply return after submitting the request. If there is some load on the system we can exit before the cipher operation is done and the buffer we read from/write to is already removed from the stack. This will e.g. result in NULL pointer dereference errors in the DCP driver during blob creation.  Fix this by waiting for the AEAD cipher operation to finish before resuming the seal and unseal calls.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.11.9-1 | [DEBIAN-CVE-2024-50281](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50281.md) | Nov 19, 2024 |
| Linux | linux Debian 14 | 6.11.9-1 | [DEBIAN-CVE-2024-50281](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50281.md) | Nov 19, 2024 |

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