CVE-2022-3565: Linux Kernel Bluetooth l1oip_core.c del_timer use after free
Vulnerability summary
CVE-2022-3565 is a high (CVSS 7.8) vulnerability in linux kernel. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 29% of scored vulnerabilities.
Not severe (CVSS 4.6, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 40 · Related 33Timeline
- 17-10-2022PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211088.
CVSS metrics
4 scores · 4 sources · 1 version- CVE.orgCNA4.6MediumCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.35%
Chance of exploitation in the next 30 days
Percentile
29%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.35% 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 cause- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.
- CWE-662Improper SynchronizationThe product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes.
Affected systems
Known conditions: adjacent network, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu90 products
- linuxAll versions (No fix recorded) | < 4.4.0-235.269 | < 4.15.0-200.211 | < 5.4.0-135.152 | < 5.15.0-56.62
- linux-aws< 4.4.0-1114.120 | < 4.4.0-1152.167 | < 4.15.0-1146.158 | < 5.4.0-1092.100 | < 5.15.0-1026.30
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
Linux2 products
- kerneln/a
- linux_kernel≥ 2.6.27, < 4.9.331 | ≥ 4.10, < 4.14.296 | ≥ 4.15, < 4.19.262 | ≥ 4.20, < 5.4.220 | ≥ 5.5, < 5.10.150 | ≥ 5.11, < 5.15.75 | ≥ 5.16, < 5.19.17 | ≥ 6.0, < 6.0.3
Debian1 product
- linux< 6.0.3-1
3 vendors · 93 products
References
22 links- vuldb.com?id.211088Permissions Required
