CVE-2022-50140: memstick/ms_block: Fix a memory leak
Vulnerability summary
CVE-2022-50140 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 9.1% 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 6 · Related 6Timeline
- 18-06-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: memstick/ms_block: Fix a memory leak 'erased_blocks_bitmap' is never freed. As it is allocated at the same time as 'used_blocks_bitmap', it is likely that it should be freed also at the same time. Add the corresponding bitmap_free() in msb_data_clear().
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
0.19%
Chance of exploitation in the next 30 days
Percentile
9%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.19% 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.
Ubuntu111 products
- linuxAll versions (No fix recorded) | < 4.15.0-197.208 | < 5.4.0-132.148 | < 5.15.0-53.59
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1143.155 | < 5.4.0-1089.97 | < 5.15.0-1023.27
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63, < efd675246aec045507b9425c67b548cc2d782d8f | ≥ 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63, < 37958980eb4cd71ae594ace093c11b6a91e165e8 | ≥ 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63, < 9d8b911fe3c3ed788c66edba7c90e32a4a7a5f53 | ≥ 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63, < 9260a154b3b5e387dbceec7c0ac441470646bc6f | ≥ 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63, < 961d7d12080fe70847f944d656e36cd0dd0214ba | ≥ 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63, < 16e07966638717416abf45393d6a80a5a1034429 | ≥ 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63, < 39be95d1ff7b44c1e969af72ba9da7332dfcc1da | ≥ 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63, < 54eb7a55be6779c4d0c25eaf5056498a28595049 | 3.12
- linux_kernel≥ 3.12, < 4.14.291 | ≥ 4.15, < 4.19.256 | ≥ 4.20, < 5.4.211 | ≥ 5.5, < 5.10.137 | ≥ 5.11, < 5.15.61 | ≥ 5.16, < 5.18.18 | ≥ 5.19, < 5.19.2
Debian1 product
- linux< 6.0.2-1
3 vendors · 114 products
