Medium
rust-time — security advisory
In Rust time crate from version 0.2.7 and before version 0.2.23, unix-like operating systems may segfault due to dereferencing a dangling pointer in specific circumstances. This requires the user to set any environment variable in a different thread than the affected functions. The affected functions are time::UtcOffset::local_offset_at, time::UtcOffset::try_local_offset_at, time::UtcOffset::current_local_offset, time::UtcOffset::try_current_local_offset, time::OffsetDateTime::now_local and time::OffsetDateTime::try_now_local. Non-Unix targets are unaffected. This includes Windows and wasm. The issue was introduced in version 0.2.7 and fixed in version 0.2.23.
- Products
- rust-time
- Affected versions
- 0.1.42-1, 0.3.23-2, 0.3.31-1, 0.3.31-1ubuntu0.1, 0.3.37-1, 0.3.39-1, 0.3.44-1, 0.3.47-1, 0.3.5-2, 0.3.5-3, 0.3.54-1
- Fixed versions
- Not specified
- CVEs
- CVE-2020-26235
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:51 UTC · Revision 1
Source evidence
In Rust time crate from version 0.2.7 and before version 0.2.23, unix-like operating systems may segfault due to dereferencing a dangling pointer in specific circumstances. This requires the user to set any environment variable in a different thread than the affected functions. The affected functions are time::UtcOffset::local_offset_at, time::UtcOffset::try_local_offset_at, time::UtcOffset::current_local_offset, time::UtcOffset::try_current_local_offset, time::OffsetDateTime::now_local and time::OffsetDateTime::try_now_local. Non-Unix targets are unaffected. This includes Windows and wasm. The issue was introduced in version 0.2.7 and fixed in version 0.2.23.
osv:UBUNTU-CVE-2020-26235
rust-time
Fixed versions: Not specified
rust-time
Fixed versions: Not specified
rust-time
Fixed versions: Not specified
rust-time
Fixed versions: Not specified
rust-time
Fixed versions: Not specified
rust-time
Fixed versions: Not specified
Complete source record
{
"id": "87c653e7827fb0ae5e2120f77b59f9ba634359665c5b302a4d761d0a82660e4e",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-26235",
"method": "structured",
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"title": "UBUNTU-CVE-2020-26235",
"summary": "In Rust time crate from version 0.2.7 and before version 0.2.23, unix-like operating systems may segfault due to dereferencing a dangling pointer in specific circumstances. This requires the user to set any environment variable in a different thread than the affected functions. The affected functions are time::UtcOffset::local_offset_at, time::UtcOffset::try_local_offset_at, time::UtcOffset::current_local_offset, time::UtcOffset::try_current_local_offset, time::OffsetDateTime::now_local and time::OffsetDateTime::try_now_local. Non-Unix targets are unaffected. This includes Windows and wasm. The issue was introduced in version 0.2.7 and fixed in version 0.2.23.",
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"modified": "2026-10-17T12:56:13.090208995Z",
"provider": "osv",
"upstream": [
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"references": [
"https://ubuntu.com/security/CVE-2020-26235",
"https://github.com/time-rs/time/security/advisories/GHSA-wcg3-cvx6-7396",
"https://rustsec.org/advisories/RUSTSEC-2020-0071.html",
"https://github.com/time-rs/time/issues/293",
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"source_id": "core-osv",
"document_id": 354961,
"published_at": "2020-11-24T22:15:00+00:00"
}