CVE-2023-53073

perf/x86/amd/core: Always clear status for idx

Description

In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd/core: Always clear status for idx The variable 'status' (which contains the unhandled overflow bits) is not being properly masked in some cases, displaying the following warning: WARNING: CPU: 156 PID: 475601 at arch/x86/events/amd/core.c:972 amd_pmu_v2_handle_irq+0x216/0x270 This seems to be happening because the loop is being continued before the status bit being unset, in case x86_perf_event_set_period() returns 0. This is also causing an inconsistency because the "handled" counter is incremented, but the status bit is not cleaned. Move the bit cleaning together above, together when the "handled" counter is incremented.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/ab33a8f7649b0324639a336e1081aaea51a4523e
https://git.kernel.org/stable/c/9d4c7b1f12e101d6d6253092588b127416ddfb6c
https://git.kernel.org/stable/c/263f5ecaf7080513efc248ec739b6d9e00f4129f

Frequently Asked Questions

What is the severity of CVE-2023-53073?: CVE-2023-53073 has not yet been assigned a CVSS score.
How to fix CVE-2023-53073?: To fix CVE-2023-53073, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-53073 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-53073 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-53073?: CVE-2023-53073 affects Linux Linux, Linux Linux.

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