GHSA-f85w-wvc7-crwc
bumpalo has use-after-free due to a lifetime error in `Vec::into_iter()`
GHSA-f85w-wvc7-crwc is a vulnerability with no CVSS score yet in bumpalo, published January 14, 2022. No source lists public exploit code. Fixed in bumpalo 3.11.1.
- Severity
- UnratedNo CVSS score yet
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
3.11.1bumpalo
Description
In affected versions of this crate, the lifetime of the iterator produced by Vec::into_iter() is not constrained to the lifetime of the Bump that allocated the vector's memory. Using the iterator after the Bump is dropped causes use-after-free accesses.
The following example demonstrates memory corruption arising from a misuse of this unsoundness.
use bumpalo::{collections::Vec, Bump};
fn main() {
let bump = Bump::new();
let mut vec = Vec::new_in(&bump);
vec.extend([0x01u8; 32]);
let into_iter = vec.into_iter();
drop(bump);
for _ in 0..100 {
let reuse_bump = Bump::new();
let _reuse_alloc = reuse_bump.alloc([0x41u8; 10]);
}
for x in into_iter {
print!("0x{:02x} ", x);
}
println!();
}
The issue was corrected in version 3.11.1 by adding a lifetime to the IntoIter type, and updating the signature of Vec::into_iter() to constrain this lifetime.
Affected packages
| Package | Affected | Fixed |
|---|---|---|
bumpalocrates.io | 1.1.0 up to 3.11.1 | 3.11.1 |
What each source reports
GitHub AdvisoriesNo score
bumpalo has use-after-free due to a lifetime error in `Vec::into_iter()`
In affected versions of this crate, the lifetime of the iterator produced by Vec::into_iter() is not constrained to the lifetime of the Bump that allocated the vector's memory. Using the iterator after the Bump is dropped causes use-after-free accesses.
The following example demonstrates memory corruption arising from a misuse of this unsoundness.
use bumpalo::{collections::Vec, Bump};
fn main() {
let bump = Bump::new();
let mut vec = Vec::new_in(&bump);
vec.extend([0x01u8; 32]);
let into_iter = vec.into_iter();
drop(bump);
for _ in 0..100 {
let reuse_bump = Bump::new();
let _reuse_alloc = reuse_bump.alloc([0x41u8; 10]);
}
for x in into_iter {
print!("0x{:02x} ", x);
}
println!();
}
The issue was corrected in version 3.11.1 by adding a lifetime to the IntoIter type, and updating the signature of Vec::into_iter() to constrain this lifetime.
- Record
GHSA-f85w-wvc7-crwc- Updated
- 2026-11-02
OSVNo score
bumpalo has use-after-free due to a lifetime error in `Vec::into_iter()`
In affected versions of this crate, the lifetime of the iterator produced by Vec::into_iter() is not constrained to the lifetime of the Bump that allocated the vector's memory. Using the iterator after the Bump is dropped causes use-after-free accesses.
The following example demonstrates memory corruption arising from a misuse of this unsoundness.
use bumpalo::{collections::Vec, Bump};
fn main() {
let bump = Bump::new();
let mut vec = Vec::new_in(&bump);
vec.extend([0x01u8; 32]);
let into_iter = vec.into_iter();
drop(bump);
for _ in 0..100 {
let reuse_bump = Bump::new();
let _reuse_alloc = reuse_bump.alloc([0x41u8; 10]);
}
for x in into_iter {
print!("0x{:02x} ", x);
}
println!();
}
The issue was corrected in version 3.11.1 by adding a lifetime to the IntoIter type, and updating the signature of Vec::into_iter() to constrain this lifetime.
- Record
GHSA-f85w-wvc7-crwc- Updated
- 2026-11-02
OSVRUSTSEC-2022-0078No score
Use-after-free due to a lifetime error in `Vec::into_iter()`
In affected versions of this crate, the lifetime of the iterator produced by
Vec::into_iter() is not constrained to the lifetime of the Bump that
allocated the vector's memory. Using the iterator after the Bump is dropped
causes use-after-free accesses.
The following example demonstrates memory corruption arising from a misuse of this unsoundness.
use bumpalo::{collections::Vec, Bump};
fn main() {
let bump = Bump::new();
let mut vec = Vec::new_in(&bump);
vec.extend([0x01u8; 32]);
let into_iter = vec.into_iter();
drop(bump);
for _ in 0..100 {
let reuse_bump = Bump::new();
let _reuse_alloc = reuse_bump.alloc([0x41u8; 10]);
}
for x in into_iter {
print!("0x{:02x} ", x);
}
println!();
}
The issue was corrected in version 3.11.1 by adding a lifetime to the IntoIter
type, and updating the signature of Vec::into_iter() to constrain this
lifetime.
- Record
RUSTSEC-2022-0078- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.