CVE-2022-48873: misc: fastrpc: Don't remove map on creater_process and device_release
Vulnerability summary
CVE-2022-48873 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.3% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 21-08-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Don't remove map on creater_process and device_release Do not remove the map from the list on error path in fastrpc_init_create_process, instead call fastrpc_map_put, to avoid use-after-free. Do not remove it on fastrpc_device_release either, call fastrpc_map_put instead. The fastrpc_free_map is the only proper place to remove the map. This is called only after the reference count is 0.
CVSS metrics
4 scores · 4 sources · 1 version- 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
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% 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.
Ubuntu108 products
- linux< 5.4.0-147.164 | < 5.15.0-70.77
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1100.108 | < 5.15.0-1034.38
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ b49f6d83e290f17e20f4e5cf31288d3bb4955ea6, < 4b5c44e924a571d0ad07054de549624fbc04e4d7 | ≥ b49f6d83e290f17e20f4e5cf31288d3bb4955ea6, < 193cd853145b63e670bd73740250983af1475330 | ≥ b49f6d83e290f17e20f4e5cf31288d3bb4955ea6, < 1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8 | ≥ b49f6d83e290f17e20f4e5cf31288d3bb4955ea6, < 35ddd482345c43d9eec1f3406c0f20a95ed4054b | ≥ b49f6d83e290f17e20f4e5cf31288d3bb4955ea6, < 5bb96c8f9268e2fdb0e5321cbc358ee5941efc15 | aaf5aa44934ad069cac805923c49f6968b9a0d49 | ≥ 5.1.6, < 5.2 | 5.2
- linux_kernel≥ 5.2, < 5.4.230 | ≥ 5.5, < 5.10.165 | ≥ 5.11, < 5.15.90 | ≥ 5.16, < 6.1.8 | 6.2:rc1 | 6.2:rc2 | 6.2:rc3 | 6.2:rc4
Debian1 product
- linux< 6.1.8-1
3 vendors · 111 products
