CVE-2022-49053

Advisory lineage Upstream: 0 Downstream: 29
Analyzed
Published: 26 Feb 2025, 01:54
Last modified:11 May 2026, 18:52

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.01% LOW
0% probability -0.06%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Feb 2025, 01:54
Published
Vulnerability first disclosed
11 May 2026, 18:52
Last Modified
Vulnerability information updated

Description

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().

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • linux•linux

    ≥ 141685a39151aea95eb56562d2953e919c6c73da, < d7c5d79e50be6e06b669141e3db1f977a0dd4e8e | ≥ 141685a39151aea95eb56562d2953e919c6c73da, < e3e0e067d5b34e4a68e3cc55f8eebc413f56f8ed | ≥ 141685a39151aea95eb56562d2953e919c6c73da, < fb7a5115422fbd6a4d505e8844f1ef5529f10489 | ≥ 141685a39151aea95eb56562d2953e919c6c73da, < aec36b98a1bbaa84bfd8299a306e4c12314af626 | ≥ 141685a39151aea95eb56562d2953e919c6c73da, < b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322 | ≥ 141685a39151aea95eb56562d2953e919c6c73da, < a9564d84ed9f6ee71017d062d0d2182154294a4b | ≥ 141685a39151aea95eb56562d2953e919c6c73da, < a6968f7a367f128d120447360734344d5a3d5336 | 4.12

  • linux•linux_kernel

    < 4.14.276 | ≥ 4.15, < 4.19.239 | ≥ 4.20, < 5.4.190 | ≥ 5.5, < 5.10.112 | ≥ 5.11, < 5.15.35 | ≥ 5.16, < 5.17.4 | 5.18:rc1

References (7)