CVE - CVE-2022-49286

CVE-ID
CVE-2022-49286	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/476ddd23f818fb94cf86fb5617f3bb9a7c92113d URL:https://git.kernel.org/stable/c/476ddd23f818fb94cf86fb5617f3bb9a7c92113d MISC:https://git.kernel.org/stable/c/5b1d2561a03e534064b51c50c774657833d3d2cf URL:https://git.kernel.org/stable/c/5b1d2561a03e534064b51c50c774657833d3d2cf MISC:https://git.kernel.org/stable/c/95193d12f10a8a088843b25e0f5fe1d83ec6b079 URL:https://git.kernel.org/stable/c/95193d12f10a8a088843b25e0f5fe1d83ec6b079 MISC:https://git.kernel.org/stable/c/ba84f9a48366dcc3cdef978599433efe101dd5bd URL:https://git.kernel.org/stable/c/ba84f9a48366dcc3cdef978599433efe101dd5bd MISC:https://git.kernel.org/stable/c/eda1662cce964c8a65bb86321f8d9cfa6e9ceaab URL:https://git.kernel.org/stable/c/eda1662cce964c8a65bb86321f8d9cfa6e9ceaab MISC:https://git.kernel.org/stable/c/fb5abce6b2bb5cb3d628aaa63fa821da8c4600f9 URL:https://git.kernel.org/stable/c/fb5abce6b2bb5cb3d628aaa63fa821da8c4600f9
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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