CVE-2022-50485: ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode
Vulnerability summary
CVE-2022-50485 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.8% 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 7 · Related 5Timeline
- 04-10-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode There are many places that will get unhappy (and crash) when ext4_iget() returns a bad inode. However, if iget the boot loader inode, allows a bad inode to be returned, because the inode may not be initialized. This mechanism can be used to bypass some checks and cause panic. To solve this problem, we add a special iget flag EXT4_IGET_BAD. Only with this flag we'd be returning bad inode from ext4_iget(), otherwise we always return the error code if the inode is bad inode.(suggested by Jan Kara)
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
0.17%
Chance of exploitation in the next 30 days
Percentile
7%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.17% 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 causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu121 products
- linuxAll versions (No fix recorded) | < 5.4.0-144.161 | < 5.15.0-69.76
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1097.105 | < 5.15.0-1033.37
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 393d1d1d76933886d5e1ce603214c9987589c6d5, < 2142dfa1de61e25b83198af0308ec7689cca25d3 | ≥ 393d1d1d76933886d5e1ce603214c9987589c6d5, < c0a738875c2e9c8c3366d792f8bf7fe508d5e5a5 | ≥ 393d1d1d76933886d5e1ce603214c9987589c6d5, < f7e6b5548f915d7aa435d0764d41eacfb49c6e09 | ≥ 393d1d1d76933886d5e1ce603214c9987589c6d5, < f725b290ed79ad61e4f721fee95a287892d8b1ad | ≥ 393d1d1d76933886d5e1ce603214c9987589c6d5, < 488a5c2bf7543c3cd3f07a025f2e62be91599430 | ≥ 393d1d1d76933886d5e1ce603214c9987589c6d5, < 63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023 | 3.10
- linux_kernel≥ 3.10, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.87 | ≥ 5.16, < 6.0.18 | ≥ 6.1, < 6.1.4
Debian1 product
- linux< 6.1.4-1
3 vendors · 124 products
