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

Moderate severity Unreviewed Published Feb 27, 2024 to the GitHub Advisory Database • Updated Apr 12, 2024

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

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

thermal/drivers/cpufreq_cooling: Fix slab OOB issue

Slab OOB issue is scanned by KASAN in cpu_power_to_freq().
If power is limited below the power of OPP0 in EM table,
it will cause slab out-of-bound issue with negative array
index.

Return the lowest frequency if limited power cannot found
a suitable OPP in EM table to fix this issue.

Backtrace:
[] die+0x104/0x5ac
[] bug_handler+0x64/0xd0
[] brk_handler+0x160/0x258
[] do_debug_exception+0x248/0x3f0
[] el1_dbg+0x14/0xbc
[] __kasan_report+0x1dc/0x1e0
[] kasan_report+0x10/0x20
[] __asan_report_load8_noabort+0x18/0x28
[] cpufreq_power2state+0x180/0x43c
[] power_actor_set_power+0x114/0x1d4
[] allocate_power+0xaec/0xde0
[] power_allocator_throttle+0x3ec/0x5a4
[] handle_thermal_trip+0x160/0x294
[] thermal_zone_device_check+0xe4/0x154
[] process_one_work+0x5e4/0xe28
[] worker_thread+0xa4c/0xfac
[] kthread+0x33c/0x358
[] ret_from_fork+0xc/0x18

References

Published by the National Vulnerability Database Feb 27, 2024
Published to the GitHub Advisory Database Feb 27, 2024
Last updated Apr 12, 2024

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

0.042%
(5th percentile)

Weaknesses

CVE ID

CVE-2020-36776

GHSA ID

GHSA-vrg6-343w-wxr6

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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