tpm: use try_get_ops() in tpm-space.c

Answer in brief

CVE-2022-49286 records a Medium severity (CVSS 4.7) vulnerability in tpm: use try_get_ops() in tpm-space.c. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Feb 26, 2025Updated Aug 13, 2026Source checked Sep 27, 2026First seen by HOL Aug 13, 2026Material review Aug 13, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.7
Exploitation: Not marked as known exploited
Affected software: 4 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 4.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:5.17:::::::*	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=4d57856a21ed2abe33412e0526cc84bdcf67ea08 <5b1d2561a03e534064b51c50c774657833d3d2cf \|\| >=4d57856a21ed2abe33412e0526cc84bdcf67ea08 <95193d12f10a8a088843b25e0f5fe1d83ec6b079 \|\| >=4d57856a21ed2abe33412e0526cc84bdcf67ea08 <476ddd23f818fb94cf86fb5617f3bb9a7c92113d \|\| >=4d57856a21ed2abe33412e0526cc84bdcf67ea08 <eda1662cce964c8a65bb86321f8d9cfa6e9ceaab \|\| >=4d57856a21ed2abe33412e0526cc84bdcf67ea08 <ba84f9a48366dcc3cdef978599433efe101dd5bd \|\| >=4d57856a21ed2abe33412e0526cc84bdcf67ea08 <fb5abce6b2bb5cb3d628aaa63fa821da8c4600f9	5b1d2561a03e534064b51c50c774657833d3d2cf, 95193d12f10a8a088843b25e0f5fe1d83ec6b079, 476ddd23f818fb94cf86fb5617f3bb9a7c92113d, eda1662cce964c8a65bb86321f8d9cfa6e9ceaab, ba84f9a48366dcc3cdef978599433efe101dd5bd, fb5abce6b2bb5cb3d628aaa63fa821da8c4600f9
Linux/Linuxgeneric	4.12	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 5b1d2561a03e534064b51c50c774657833d3d2cf if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Feb 26, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 13, 2026

Sources and claim methodology

Upstream source 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/[email protected]/ 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.

Quoted source text, attributed separately from HOL analysis.