🛡️ CVE-2022-26878 — linux-kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit CWE-401 NVD

5.5

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

drivers/bluetooth/virtio_bt.c in the Linux kernel before 5.16.3 has a memory leak (socket buffers have memory allocated but not freed).

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2022-26878 is classified as CWE-401: Memory Leak. Allocated memory is never released, so long-running or repeated operations gradually exhaust it.

Affected software

CVE-2022-26878 is recorded against 1 package.

linux-kernel (from 5.16 up to 5.16.3)

Timeline and source

Published on 11 March 2022 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

www.openwall.com
cdn.kernel.org
cdn.kernel.org
git.kernel.org
lore.kernel.org
www.openwall.com
cdn.kernel.org
cdn.kernel.org
git.kernel.org
lore.kernel.org

CVE-2022-26878 on other distributions

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

Debian Ubuntu

Details

Severity MEDIUM

CVSS Score 5.5

CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE CWE-401

Public Exploit ✅ No

Source NVD

Published 2022-03-11

Updated 2026-08-11

Modified 2026-06-17

Fix URL http://www.openwall.com/lists/oss-security/2022/03/11/1

Affected Packages

Software	From version	Fixed in
linux-kernel	5.16	5.16.3

References

Mailing List, Patch, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/03/11/1

Release Notes, Vendor Advisory https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.17

Release Notes, Vendor Advisory https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3

Patch, Vendor Advisory https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d0688421449718c6c5f46e458a378c9b530ba18

Patch https://lore.kernel.org/linux-bluetooth/1A203F5E-FB5E-430C-BEA3-86B191D69D58%40holtmann.org/

Mailing List, Patch, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/03/11/1

Release Notes, Vendor Advisory https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.17

Release Notes, Vendor Advisory https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3

Patch, Vendor Advisory https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d0688421449718c6c5f46e458a378c9b530ba18

Patch https://lore.kernel.org/linux-bluetooth/1A203F5E-FB5E-430C-BEA3-86B191D69D58%40holtmann.org/

🔗 NVD 🔗 Mitre ✅ Fix / Advisory

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