CVE-2023-0468
Advisory lineage Upstream: 0 Downstream: 11
Modified
Published: 25 Jan 2023, 00:00
Last modified:01 Apr 2025, 15:06
Vulnerability Summary
Overall Risk (default)
medium
29/100 CVSS Score
4.7 MEDIUM
v3.1 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected
Timeline
25 Jan 2023, 00:00
Published
Vulnerability first disclosed
01 Apr 2025, 15:06
Last Modified
Vulnerability information updated
Description
A use-after-free flaw was found in io_uring/poll.c in io_poll_check_events in the io_uring subcomponent in the Linux Kernel due to a race condition of poll_refs. This flaw may cause a NULL pointer dereference.
CVSS Metrics
- v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Trends
Current EPSS score: 0.02%• Percentile: 5%
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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_kernel
< 6.1 | 6.1 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5 | 6.1:rc6