Orta CVSS 4.7
CVE-2022-49286: Linux Kernel: NULL işaretçi başvurusu
Açıklama (NVD)
In the Linux kernel, the following vulnerability has been resolved: tpm: use try_get_ops() in tpm-space.c As part of the series conversion to remove nested TPM operations: https://lore.kernel.org/all/20190205224723.19671-1-jarkko.sakkinen@linux.intel.com/ exposure of the chip->tpm_mutex was removed from much of the upper level code. In this conversion, tpm2_del_space() was missed. This didn't matter much because it's usually called closely after a converted operation, so there's only a very tiny race window where the chip can be removed before the space flushing is done which causes a NULL deref on the mutex. However, there are reports of this window being hit in practice, so fix this by converting tpm2_del_space() to use tpm_try_get_ops(), which performs all the teardown checks before acquring the mutex.
Özet bilgiler
- Ürün
- Linux Linux Kernel
- CVSS v3.1
- 4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS
- %0,24 (yüzdelik 15)
- CWE
- CWE-476
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 4.12 | — | 5.4.188 |
| linux-linux-kernel | 5.5 | — | 5.10.109 |
| linux-linux-kernel | 5.11 | — | 5.15.32 |
| linux-linux-kernel | 5.16 | — | 5.16.18 |
| linux-linux-kernel | 5.17 | 5.17 | — |