CVE-2022-50268: mmc: moxart: fix return value check of mmc_add_host()
Vulnerability summary
CVE-2022-50268 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.5% 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 5 · Related 4Timeline
- 15-09-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: mmc: moxart: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and goto error path which will call mmc_free_host().
CVSS metrics
3 scores · 3 sources · 1 version- 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
0.16%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.16% 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.
Ubuntu120 products
- linuxAll versions (No fix recorded) | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-69.76
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1153.166 | < 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≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < a4c765f5d8e58138cff69f1510b2e8942ec37022 | ≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < a94d466f31a5201995d39bc1208e2c09ab04f0bf | ≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < c7e9a2059fb943fc3c3fa12261518fd72a0fc136 | ≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < b174f2b36c638fc7737df6c8aac1889a646be98f | ≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < 7c3b301ca8b0cab392c71da8fcdfa499074f8e97 | ≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < f0502fe86a2db2336c9498d2de3e97f22dcf85ae | ≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < 8f8bb62c7c5c833758ef1563fe738afd579c3efe | ≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < 40aa73c70e8a5706f9cbe01409a5e51cc0f1750e | ≥ 1b66e94e6b9995323190f31c51d8e1a6f516627e, < 0ca18d09c744fb030ae9bc5836c3e357e0237dea | 3.16
- linux_kernel≥ 3.16, < 4.9.337 | ≥ 4.10, < 4.14.303 | ≥ 4.15, < 4.19.270 | ≥ 4.20, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.86 | ≥ 5.16, < 6.0.16 | ≥ 6.1, < 6.1.2
Debian1 product
- linux< 6.1.4-1
3 vendors · 123 products
