CVE-2022-26878: linux linux_kernel
Vulnerability summary
CVE-2022-26878 is a medium (CVSS 5.5) vulnerability in linux linux_kernel. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 27% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 11-03-2022PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
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).
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.34%
Chance of exploitation in the next 30 days
Percentile
27%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.33% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu37 products
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13< 5.13.0-1022.24~20.04.1
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.8All versions (No fix recorded)
Debian1 product
- linux< 5.16.7-1
Linux1 product
- linux_kernel≥ 5.13, < 5.15.17 | ≥ 5.16, < 5.16.3
3 vendors · 39 products
References
11 links- lore.kernel.org/linux-bluetooth/1A203F5E-FB5E-430C-BEA3-86B191D69D58%40holtmann.org/X Refsource MISCPatch
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3X Refsource MISCREPORTRelease NotesVendor Advisory
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.17X Refsource MISCREPORTRelease NotesVendor Advisory
- www.openwall.com/lists/oss-security/2022/03/11/1Mailing ListX Refsource MLISTREPORTPatchThird Party Advisory
