CVE-2022-41858: linux linux_kernel Use After Free
Vulnerability summary
CVE-2022-41858 is a high (CVSS 7.1) Use After Free vulnerability in linux linux_kernel. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 21.6% of scored vulnerabilities.
Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 31 · Related 18Timeline
- 17-01-2023PublishedVulnerability first disclosed.
- 07-04-2025Last modifiedVulnerability information updated.
Description
A flaw was found in the Linux kernel. A NULL pointer dereference may occur while a slip driver is in progress to detach in sl_tx_timeout in drivers/net/slip/slip.c. This issue could allow an attacker to crash the system or leak internal kernel information.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.29%
Chance of exploitation in the next 30 days
Percentile
22%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.28% 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu76 products
- linuxAll versions (No fix recorded) | < 4.4.0-237.271 | < 4.15.0-189.200 | < 5.4.0-122.138 | < 5.15.0-37.39
- linux-aws< 4.4.0-1116.122 | < 4.4.0-1154.169 | < 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)
Debian1 product
- linux< 5.17.6-1
Linux1 product
- linux_kernel< 4.9.311 | ≥ 4.10, < 4.14.276 | ≥ 4.15, < 4.19.239 | ≥ 4.20, < 5.4.190 | ≥ 5.5.0, < 5.10.112 | ≥ 5.11, < 5.15.35 | ≥ 5.16, < 5.17.4
Netapp1 product
- hci_baseboard_management_controllerh300s | h410c | h410s | h500s | h700s
4 vendors · 79 products
References
10 links- security.netapp.com/advisory/ntap-20230223-0006/Third Party Advisory
