5.5

CVE-2022-50299: md: Replace snprintf with scnprintf

Analyzed
AliasesUBUNTU-CVE-2022-50299DEBIAN-CVE-2022-50299
Published 15-09-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50299 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% 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 9 · Related 7
RHSA-2023:2458RHSA-2023:2951SUSE-SU-2025:03613-1SUSE-SU-2025:03614-1SUSE-SU-2025:03615-1SUSE-SU-2025:03626-1

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: md: Replace snprintf with scnprintf Current code produces a warning as shown below when total characters in the constituent block device names plus the slashes exceeds 200. snprintf() returns the number of characters generated from the given input, which could cause the expression “200 – len” to wrap around to a large positive number. Fix this by using scnprintf() instead, which returns the actual number of characters written into the buffer. [ 1513.267938] ------------[ cut here ]------------ [ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510 [ 1513.267944] Modules linked in: <snip> [ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure #90~18.04.1-Ubuntu [ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022 [ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510 <-snip-> [ 1513.267982] Call Trace: [ 1513.267986] snprintf+0x45/0x70 [ 1513.267990] ? disk_name+0x71/0xa0 [ 1513.267993] dump_zones+0x114/0x240 [raid0] [ 1513.267996] ? _cond_resched+0x19/0x40 [ 1513.267998] raid0_run+0x19e/0x270 [raid0] [ 1513.268000] md_run+0x5e0/0xc50 [ 1513.268003] ? security_capable+0x3f/0x60 [ 1513.268005] do_md_run+0x19/0x110 [ 1513.268006] md_ioctl+0x195e/0x1f90 [ 1513.268007] blkdev_ioctl+0x91f/0x9f0 [ 1513.268010] block_ioctl+0x3d/0x50 [ 1513.268012] do_vfs_ioctl+0xa9/0x640 [ 1513.268014] ? __fput+0x162/0x260 [ 1513.268016] ksys_ioctl+0x75/0x80 [ 1513.268017] __x64_sys_ioctl+0x1a/0x20 [ 1513.268019] do_syscall_64+0x5e/0x200 [ 1513.268021] entry_SYSCALL_64_after_hwframe+0x44/0xa9

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

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

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu117 products
  • linux< 4.15.0-204.215 | < 5.4.0-136.153 | < 5.15.0-57.63
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1150.163 | < 5.4.0-1093.101 | < 5.15.0-1027.31
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 766038846e875740cf4c20dfc5d5b292ba47360a, < 3b0a2bd51f60418ecd67493586a2bb2174199de3 | ≥ 766038846e875740cf4c20dfc5d5b292ba47360a, < 897b1450abe5a67c842a5d24173ce4449ccdfa94 | ≥ 766038846e875740cf4c20dfc5d5b292ba47360a, < 97238b88583c27c9d3b4a0cedb45f816523f17c3 | ≥ 766038846e875740cf4c20dfc5d5b292ba47360a, < 76694e9ce0b2238c0a5f3ba54f9361dd3770ec78 | ≥ 766038846e875740cf4c20dfc5d5b292ba47360a, < 5d8259c9d1915a50c60c7d6e9e7fb9b7da64a175 | ≥ 766038846e875740cf4c20dfc5d5b292ba47360a, < 41ca95033a0c47cd6dace1f0a36a6eb5ebe799e6 | ≥ 766038846e875740cf4c20dfc5d5b292ba47360a, < f95825c4e51cf9a653b0ef947ac78401fc9d3a40 | ≥ 766038846e875740cf4c20dfc5d5b292ba47360a, < 1727fd5015d8f93474148f94e34cda5aa6ad4a43 | 4.10
  • linux_kernel≥ 4.10, < 4.14.296 | ≥ 4.15, < 4.19.262 | ≥ 4.20, < 5.4.220 | ≥ 5.5, < 5.10.150 | ≥ 5.11, < 5.15.75 | ≥ 5.16, < 5.19.17 | ≥ 6.0, < 6.0.3
Debian1 product
  • linux< 6.0.3-1

3 vendors · 120 products

References

12 links
Show all 12 references