CVE-2022-49053

scsi: target: tcmu: Fix possible page UAF

High · published February 26, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
19.7
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

scsi: target: tcmu: Fix possible page UAF

tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not

take refcount properly and just returns page pointer. When

tcmu_try_get_data_page() returns, the returned page may have been freed by

tcmu_blocks_release().

We need to get_page() under cmdr_lock to avoid concurrent

tcmu_blocks_release().

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00282 · 19.7th percentile
Published
2025-02-26T01:54Z
EPSS history
Timeline
  • 26 FEB 01:54Z
    scsi: target: tcmu: Fix possible page UAF
    cvelistv5