CVE-2021-47344

low-risk

Published 2024-05-21

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

Do I need to act?

0.01% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.5/10 Medium

LOCAL / LOW complexity

Affected Products (1)

Linux Kernel

Affected Vendors

Linux

References (18)

Patch https://git.kernel.org/stable/c/021c294dff030f3ba38eb81e400ba123db32ecbc

Patch https://git.kernel.org/stable/c/0a045eac8d0427b64577a24d74bb8347c905ac65

Patch https://git.kernel.org/stable/c/0edd6759167295ea9969e89283b81017b4c688aa

Patch https://git.kernel.org/stable/c/5f3f81f1c96b501d180021c23c25e9f48eaab235

Patch https://git.kernel.org/stable/c/b0633051a6cb24186ff04ce1af99c7de18c1987e

Patch https://git.kernel.org/stable/c/bbc80a972a3c5d7eba3f6c9c07af8fea42f5c513

Patch https://git.kernel.org/stable/c/c57b2bd3247925e253729dce283d6bf6abc9339d

Patch https://git.kernel.org/stable/c/c57bfd8000d7677bf435873b440eec0c47f73a08

Patch https://git.kernel.org/stable/c/d69b39d89f362cfeeb54a68690768d0d257b2c8f