CVE-2019-16139
Out of bounds access in compact_arena
An issue was discovered in the compact_arena crate before 0.4.0 for Rust. Generativity is mishandled, leading to an out-of-bounds write or read.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the compact_arena crate before 0.4.0 for Rust. Generativity is mishandled, leading to an out-of-bounds write or read.
- Record
CVE-2019-16139- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:N/C:P/I:P/A:C - Weakness
- CWE-125, CWE-787
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the compact_arena crate before 0.4.0 for Rust. Generativity is mishandled, leading to an out-of-bounds write or read.
- Record
CVE-2019-16139- Updated
- 2026-11-02
EUVDEUVD-2021-1621 No score
An issue was discovered in the compact_arena crate before 0.4.0 for Rust. Generativity is mishandled, leading to an out-of-bounds write or read.
- Record
EUVD-2021-1621- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7j36-gc4r-9x3r
Out of bounds access in compact_arena
Affected versions of this crate did not properly implement the generativity, because the invariant lifetimes were not necessarily dropped.
This allows an attacker to mix up two arenas, using indices created from one arena with another one. This might lead to an out-of-bounds read or write access into the memory reserved for the arena.
The flaw was corrected by implementing generativity correctly in version 0.4.0.
- Record
GHSA-7j36-gc4r-9x3r- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-125, CWE-787
- Updated
- 2026-11-02
OSVGHSA-7j36-gc4r-9x3r
Out of bounds access in compact_arena
Affected versions of this crate did not properly implement the generativity, because the invariant lifetimes were not necessarily dropped.
This allows an attacker to mix up two arenas, using indices created from one arena with another one. This might lead to an out-of-bounds read or write access into the memory reserved for the arena.
The flaw was corrected by implementing generativity correctly in version 0.4.0.
- Record
GHSA-7j36-gc4r-9x3r- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-125, CWE-787
- Updated
- 2026-11-02
OSVRUSTSEC-2019-0015
Flaw in generativity allows out-of-bounds access
Affected versions of this crate did not properly implement the generativity,
because the invariant lifetimes were not necessarily dropped.
This allows an attacker to mix up two arenas, using indices created from one arena with another one. This might lead to an out-of-bounds read or write access into the memory reserved for the arena.
The flaw was corrected by implementing generativity correctly in version 0.4.0.
- Record
RUSTSEC-2019-0015- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
compact_arenacrates.io |
before 0.4.0 | 0.4.0 |
compact_arenacrates.io |
0.0.0-0 up to 0.4.0 | 0.4.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-16139 is a critical vulnerability (CVSS 9.8) in Compact Arena Project Arena, published May 21, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.85%, the 79th percentile. Fixed in compact_arena 0.4.0.