5.5

CVE-2021-47344: media: zr364xx: fix memory leak in zr364xx_start_readpipe

Analyzed
AliasesUBUNTU-CVE-2021-47344DEBIAN-CVE-2021-47344
Published 21-05-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47344 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.8% 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
0.24%
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 6 · Related 6
SUSE-SU-2024:1979-1SUSE-SU-2024:1983-1SUSE-SU-2024:2010-1SUSE-SU-2024:2183-1SUSE-SU-2024:2184-1SUSE-SU-2024:2185-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: media: zr364xx: fix memory leak in zr364xx_start_readpipe syzbot reported memory leak in zr364xx driver. The problem was in non-freed urb in case of usb_submit_urb() fail. backtrace: [<ffffffff82baedf6>] kmalloc include/linux/slab.h:561 [inline] [<ffffffff82baedf6>] usb_alloc_urb+0x66/0xe0 drivers/usb/core/urb.c:74 [<ffffffff82f7cce8>] zr364xx_start_readpipe+0x78/0x130 drivers/media/usb/zr364xx/zr364xx.c:1022 [<ffffffff84251dfc>] zr364xx_board_init drivers/media/usb/zr364xx/zr364xx.c:1383 [inline] [<ffffffff84251dfc>] zr364xx_probe+0x6a3/0x851 drivers/media/usb/zr364xx/zr364xx.c:1516 [<ffffffff82bb6507>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<ffffffff826018a9>] really_probe+0x159/0x500 drivers/base/dd.c:576

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% 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.

Ubuntu86 products
  • linuxAll versions (No fix recorded) | < 4.15.0-156.163 | < 5.4.0-84.94
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1111.118 | < 5.4.0-1056.59
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < c57b2bd3247925e253729dce283d6bf6abc9339d | ≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < bbc80a972a3c5d7eba3f6c9c07af8fea42f5c513 | ≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < b0633051a6cb24186ff04ce1af99c7de18c1987e | ≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < 021c294dff030f3ba38eb81e400ba123db32ecbc | ≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < 0edd6759167295ea9969e89283b81017b4c688aa | ≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < c57bfd8000d7677bf435873b440eec0c47f73a08 | ≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < 5f3f81f1c96b501d180021c23c25e9f48eaab235 | ≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < d69b39d89f362cfeeb54a68690768d0d257b2c8f | ≥ ccbf035ae5de4c535160fc99f73feb44cc55b534, < 0a045eac8d0427b64577a24d74bb8347c905ac65 | 2.6.32
  • linux_kernel≥ 2.6.32, < 4.4.276 | ≥ 4.5, < 4.9.276 | ≥ 4.10, < 4.14.240 | ≥ 4.15, < 4.19.198 | ≥ 4.20, < 5.4.133 | ≥ 5.5, < 5.10.51 | ≥ 5.11, < 5.12.18 | ≥ 5.13, < 5.13.3
Debian1 product
  • linux< 5.14.6-1

3 vendors · 89 products

References

13 links
Show all 13 references