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In the Linux kernel, the following vulnerability has been...

Moderate severity Unreviewed Published May 21, 2024 to the GitHub Advisory Database • Updated Sep 26, 2025

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

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

drivers: perf: Check find_first_bit() return value

We must check the return value of find_first_bit() before using the
return value as an index array since it happens to overflow the array
and then panic:

[ 107.318430] Kernel BUG [#1]
[ 107.319434] CPU: 3 PID: 1238 Comm: kill Tainted: G E 6.6.0-rc6ubuntu-defconfig #2
[ 107.319465] Hardware name: riscv-virtio,qemu (DT)
[ 107.319551] epc : pmu_sbi_ovf_handler+0x3a4/0x3ae
[ 107.319840] ra : pmu_sbi_ovf_handler+0x52/0x3ae
[ 107.319868] epc : ffffffff80a0a77c ra : ffffffff80a0a42a sp : ffffaf83fecda350
[ 107.319884] gp : ffffffff823961a8 tp : ffffaf8083db1dc0 t0 : ffffaf83fecda480
[ 107.319899] t1 : ffffffff80cafe62 t2 : 000000000000ff00 s0 : ffffaf83fecda520
[ 107.319921] s1 : ffffaf83fecda380 a0 : 00000018fca29df0 a1 : ffffffffffffffff
[ 107.319936] a2 : 0000000001073734 a3 : 0000000000000004 a4 : 0000000000000000
[ 107.319951] a5 : 0000000000000040 a6 : 000000001d1c8774 a7 : 0000000000504d55
[ 107.319965] s2 : ffffffff82451f10 s3 : ffffffff82724e70 s4 : 000000000000003f
[ 107.319980] s5 : 0000000000000011 s6 : ffffaf8083db27c0 s7 : 0000000000000000
[ 107.319995] s8 : 0000000000000001 s9 : 00007fffb45d6558 s10: 00007fffb45d81a0
[ 107.320009] s11: ffffaf7ffff60000 t3 : 0000000000000004 t4 : 0000000000000000
[ 107.320023] t5 : ffffaf7f80000000 t6 : ffffaf8000000000
[ 107.320037] status: 0000000200000100 badaddr: 0000000000000000 cause: 0000000000000003
[ 107.320081] [] pmu_sbi_ovf_handler+0x3a4/0x3ae
[ 107.320112] [] handle_percpu_devid_irq+0x9e/0x1a0
[ 107.320131] [] generic_handle_domain_irq+0x28/0x36
[ 107.320148] [] riscv_intc_irq+0x36/0x4e
[ 107.320166] [] handle_riscv_irq+0x54/0x86
[ 107.320189] [] do_irq+0x64/0x96
[ 107.320271] Code: 85a6 855e b097 ff7f 80e7 9220 b709 9002 4501 bbd9 (9002) 6097
[ 107.320585] ---[ end trace 0000000000000000 ]---
[ 107.320704] Kernel panic - not syncing: Fatal exception in interrupt
[ 107.320775] SMP: stopping secondary CPUs
[ 107.321219] Kernel Offset: 0x0 from 0xffffffff80000000
[ 107.333051] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---

References

Published by the National Vulnerability Database May 21, 2024
Published to the GitHub Advisory Database May 21, 2024
Last updated Sep 26, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(31st percentile)

Weaknesses

Unchecked Return Value

The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions. Learn more on MITRE.

CVE ID

CVE-2023-52797

GHSA ID

GHSA-3r4r-jmwh-rccm

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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