🛡️ CVE-2022-2521 — debian-linux

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: Required — someone has to click, open or visit something.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: None.
• Integrity impact: None.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2022-2521 is classified as CWE-763: Release of Invalid Pointer or Reference. The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.

Affected software

CVE-2022-2521 is recorded against 2 packages.

• debian-linux
• libtiff

Timeline and source

Published on 31 August 2022 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

gitlab.com
gitlab.com
www.debian.org
gitlab.com
gitlab.com
www.debian.org

Other advisories for this package

debian-linux has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-12996 (8.1 High, published 30 Jul 2026)
• CVE-2026-14355 (5.6 Medium, published 3 Jul 2026)
• CVE-2026-56968 (3.7 Low, published 23 Jun 2026)
• CVE-2026-49975 (7.5 High, published 8 Jun 2026)
• CVE-2026-9256 (8.1 High, published 22 May 2026)
• CVE-2026-46333 (7.1 High, published 15 May 2026)
• CVE-2026-31431 (7.8 High, published 22 Apr 2026)
• CVE-2026-41082 (7.3 High, published 16 Apr 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-763: Release of Invalid Pointer or Reference) in other software:

• CVE-2026-15718 (4.3 Medium, published 14 Jul 2026)
• CVE-2026-57248 (7.8 High, published 8 Jul 2026)
• CVE-2026-53000 (7.8 High, published 24 Jun 2026)
• CVE-2026-47312 (5.5 Medium, published 19 May 2026)
• CVE-2025-65116 (5.5 Medium, published 7 Apr 2026)
• CVE-2026-56364 (published 21 Jan 2026)
• CVE-2026-22770 (6.5 Medium, published 20 Jan 2026)
• CVE-2025-14233 (9.8 Critical, published 16 Jan 2026)

CVE-2022-2521 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Affected Packages

References