CVE-2022-1199: linux linux_kernel Use After Free
Vulnerability summary
CVE-2022-1199 is a high (CVSS 7.5) Use After Free vulnerability in linux linux_kernel. EPSS estimates a 2.17% chance of exploitation in the next 30 days, higher than 82.2% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 9Timeline
- 29-08-2022PublishedVulnerability first disclosed.
- 23-04-2025Last modifiedVulnerability information updated.
Description
A flaw was found in the Linux kernel. This flaw allows an attacker to crash the Linux kernel by simulating amateur radio from the user space, resulting in a null-ptr-deref vulnerability and a use-after-free vulnerability.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.17%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
Increase +0.14 pp
From 2.03% 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-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
- CWE-476NULL Pointer DereferenceThe product dereferences a pointer that it expects to be valid but is NULL.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu77 products
- linuxAll versions (No fix recorded) | < 4.4.0-234.268 | < 4.15.0-189.200 | < 5.4.0-122.138 | < 5.15.0-37.39
- linux-aws< 4.4.0-1113.119 | < 4.4.0-1151.166 | < 4.15.0-1137.148 | < 5.4.0-1081.88 | < 5.15.0-1011.14
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
Netapp6 products
Debian1 product
- linux< 5.16.18-1
Linux1 product
- linux_kernel< 4.14.277 | ≥ 4.15, < 4.19.240 | ≥ 4.20, < 5.4.190 | ≥ 5.5, < 5.10.112 | ≥ 5.11, < 5.15.35
Redhat1 product
- enterprise_linuxEOL6.0
5 vendors · 86 products
References
18 links- github.com/torvalds/linux/commit/4e0f718daf97d47cf7dec122da1be970f145c809REPORTPatchThird Party Advisory
- github.com/torvalds/linux/commit/71171ac8eb34ce7fe6b3267dce27c313ab3cb3acREPORTPatchThird Party Advisory
- github.com/torvalds/linux/commit/7ec02f5ac8a5be5a3f20611731243dc5e1d9ba10REPORTPatchThird Party Advisory
- access.redhat.com/security/cve/CVE-2022-1199Third Party Advisory
- security.netapp.com/advisory/ntap-20221228-0006/Third Party Advisory
