CVE-2021-47344

MEDIUM

Linux kernel 2.6.32-4.4.276 - Use-After-Free in zr364xx_start_readpipe

Title source: llm
STIX 2.1

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

Scores

CVSS v3 5.5
EPSS 0.0024
EPSS Percentile 15.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (21)
Linux/Linux < 2.6.32
Linux/Linux 2.6.32
Linux/Linux 4.14.240 - 4.14.*
Linux/Linux 4.19.198 - 4.19.*
Linux/Linux 4.4.276 - 4.4.*
Linux/Linux 4.9.276 - 4.9.*
Linux/Linux 5.10.51 - 5.10.*
Linux/Linux 5.12.18 - 5.12.*
Linux/Linux 5.13.3 - 5.13.*
Linux/Linux 5.14
... and 11 more
Published May 21, 2024
Tracked Since Feb 18, 2026