CVE-2020-36785Hinoki check available

Kernel memory corruption via double-freed statistics buffer

Published Feb 28, 2024 · Updated Aug 26, 2026

Use-after-free in the Linux kernel AtomISP driver allows local users with camera-device access to corrupt kernel memory via buffer setup. In atomisp_alloc_css_stat_bufs(), a failed DIS-buffer allocation frees an s3a_buf that remains linked in asd->s3a_stats, and shared cleanup dereferences and frees the same object again. Exploitation requires local access to an AtomISP V4L2 device node and can yield kernel memory reads or writes, privilege escalation, or a kernel panic or hang.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in the Linux kernel AtomISP driver allows local users with camera-device access to corrupt kernel memory via buffer setup. In atomisp_alloc_css_stat_bufs(), a failed DIS-buffer allocation frees an s3a_buf that remains linked in asd->s3a_stats, and shared cleanup dereferences and frees the same object again. Exploitation requires local access to an AtomISP V4L2 device node and can yield kernel memory reads or writes, privilege escalation, or a kernel panic or hang.

The record

CVE
CVE-2020-36785
Published
Feb 28, 2024
Updated
Aug 26, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415, CWE-416, T1499, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.12
  2. Affected versionversion=5.8
  3. Affected versionversion=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <51b8dc5163d2ff2bf04019f8bf7e3bd0e75bb654
  4. Affected versionversion=ad85094b293e40e7a2f831b0311a389d952ebd5e <801c1d505894008c888bc71d08d5cff5d87f8aba
  5. Affected versionversion=ad85094b293e40e7a2f831b0311a389d952ebd5e <8267ccd7b9df7ab682043507dd682fe0621cf045
  6. Affected versionversion=ad85094b293e40e7a2f831b0311a389d952ebd5e <ba11bbf303fafb33989e95473e409f6ab412b18d
  7. Affected versionversion=ad85094b293e40e7a2f831b0311a389d952ebd5e <d218c7a0284f6b92a7b82d2e19706e18663b4193

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=5.8; version=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <51b8dc5163d2ff2bf04019f8bf7e3bd0e75bb654; version=ad85094b293e40e7a2f831b0311a389d952ebd5e <801c1d505894008c888bc71d08d5cff5d87f8aba; version=ad85094b293e40e7a2f831b0311a389d952ebd5e <8267ccd7b9df7ab682043507dd682fe0621cf045; version=ad85094b293e40e7a2f831b0311a389d952ebd5e <ba11bbf303fafb33989e95473e409f6ab412b18d; version=ad85094b293e40e7a2f831b0311a389d952ebd5e <d218c7a0284f6b92a7b82d2e19706e18663b4193

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
CWE-416Use After Free
T1499Endpoint Denial of Service
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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