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fkie_cve-2019-25008

2026-10-04T00:52:42.775039+00:00

Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2020-25574. Reason: This candidate is a duplicate of CVE-2020-25574. Notes: All CVE users should reference CVE-2020-25574 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage

Withdrawn: GHSA-xvc9-xwgj-4cq9 — Duplicate Advisory: Integer Overflow in HeaderMap::reserve() can cause Denial of Service

2026-10-04T00:52:42.775122+00:00

Withdrawn by the publisher.

Affected: crates.io: http

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-x7vr-c387-8w57. This link is maintained to preserve external references.

### Original Description

HeaderMap::reserve() used usize::next_power_of_two() to calculate the increased capacity. However, next_power_of_two() silently overflows to 0 if given a sufficiently large number in release mode.

If the map was not empty when the overflow happens, the library will invoke self.grow(0) and start infinite probing. This allows an attacker who controls the argument to reserve() to cause a potential denial of service (DoS).

The flaw was corrected in 0.1.20 release of http crate.

gsd-2019-25008

2026-10-04T00:52:42.775175+00:00

gsd-2019-25008

RUSTSEC-2019-0033 — Integer Overflow in HeaderMap::reserve() can cause Denial of Service

2026-10-04T00:52:42.775196+00:00

Affected: crates.io: http

`HeaderMap::reserve()` used `usize::next_power_of_two()` to calculate the increased capacity. However, `next_power_of_two()` silently overflows to 0 if given a sufficiently large number in release mode.

If the map was not empty when the overflow happens, the library will invoke `self.grow(0)` and start infinite probing. This allows an attacker who controls the argument to `reserve()` to cause a potential denial of service (DoS).

The flaw was corrected in 0.1.20 release of `http` crate.