CVE-2021-44733
High
Description
A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Linux Kernel
PublishedDec 22, 2021
First seenDec 22, 2021
How to fix
Update
- linux linux_kernel4.14.261, 4.19.224, 5.4.170, 5.10.89, 5.15.12 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.12 ≤ v < 4.14.261, 4.15 ≤ v < 4.19.224, 4.20 ≤ v < 5.4.170, 5.5 ≤ v < 5.10.89, 5.11 ≤ v < 5.15.12 | 4.14.261, 4.19.224, 5.4.170, 5.10.89, 5.15.12 |
| redhat enterprise_linux | 8.0 | — |
| fedoraproject fedora | 35 | — |
| debian debian_linux | 9.0, 10.0, 11.0 | — |
| netapp h410c_firmware | No range specified | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h300e_firmware | No range specified | — |
| netapp h500e_firmware | No range specified | — |
| netapp h700e_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
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