5.5

CVE-2022-50251: mmc: vub300: fix return value check of mmc_add_host()

Analyzed
AliasesUBUNTU-CVE-2022-50251DEBIAN-CVE-2022-50251
Published 15-09-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50251 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 4
RHSA-2024:9315SUSE-SU-2025:03615-1SUSE-SU-2025:03628-1SUSE-SU-2025:3716-1SUSE-SU-2025:3761-1

Timeline

  1. 15-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: vub300: 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(), besides, the timer added before mmc_add_host() needs be del. And this patch fixes another missing call mmc_free_host() if usb_control_msg() fails.

CVSS metrics

4 scores · 3 sources · 2 versions

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

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

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≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 41ed46bdbd2878cd6567abe0974a445f8b1b8ec8 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 25f05d762ca5e1c685002a53dd44f68e78ca3feb | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < a46e681151bbdacdf6b89ee8c4e5bad0555142bb | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 3b29f8769d32016b2d89183db4d80c7a71b7e35e | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 3049a3b927a40d89d4582ff1033cd7953be773c7 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < afc898019e7bf18c5eb7a0ac19852fcb1b341b3c | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < c9e85979b59cb86f0a15defa8199d740e2b36b90 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 2044b2ea77945f372ef161d1bbf814e471767ff2 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 0613ad2401f88bdeae5594c30afe318e93b14676 | 3.0
  • linux_kernel≥ 3.0, < 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

References

13 links
Show all 13 references