CVE-2023-53656 — Time-of-check Time-of-use (TOCTOU) Race Condition in Linux
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 96.90%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 7
Description
In the Linux kernel, the following vulnerability has been resolved:
drivers/perf: hisi: Don't migrate perf to the CPU going to teardown
The driver needs to migrate the perf context if the current using CPU going
to teardown. By the time calling the cpuhp::teardown() callback the
cpu_online_mask() hasn't updated yet and still includes the CPU going to
teardown. In current driver's implementation we may migrate the context
to the teardown CPU and leads to the below calltrace:
...
[ 368.104662][…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages4 packages
▶CVEListV5linux/linux8404b0fbc7fbd42e5c5d28cdedd450e70829c77a — be9c8c9c84b6d25a7b7d39954030aba6f759feb6+4
Patches
🔴Vulnerability Details
2GHSA▶
GHSA-3f5v-f3mc-6rj8: In the Linux kernel, the following vulnerability has been resolved:
drivers/perf: hisi: Don't migrate perf to the CPU going to teardown
The driver n↗2025-10-07
OSV▶
CVE-2023-53656: In the Linux kernel, the following vulnerability has been resolved: drivers/perf: hisi: Don't migrate perf to the CPU going to teardown The driver nee↗2025-10-07