CVE-2022-49515

Memory disclosure and crash via invalid OTP mask

Published Feb 26, 2025 · Updated May 11, 2026

Out-of-bounds access in Linux 5.16 allows local users to disclose kernel memory or crash the system during CS35L41 device probing. The cs35l41_otp_unpack function processes a nonexistent hundredth otp_map_1 or otp_map_2 element, producing GENMASK(-1, 0) and an invalid 64-bit shift. Reachability requires a system with the CS35L41 audio codec and invocation of its HDA I2C probe path; no remote vector is documented.

CVSS severity7.1
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in Linux 5.16 allows local users to disclose kernel memory or crash the system during CS35L41 device probing. The cs35l41_otp_unpack function processes a nonexistent hundredth otp_map_1 or otp_map_2 element, producing GENMASK(-1, 0) and an invalid 64-bit shift. Reachability requires a system with the CS35L41 audio codec and invocation of its HDA I2C probe path; no remote vector is documented.

The record

CVE
CVE-2022-49515
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.16
  2. Affected versionversion=6450ef55905688602175fae4ed1bfbfef6a14dde <9f342904216f378e88008bb0ce1ae200a4b99fe8
  3. Affected versionversion=6450ef55905688602175fae4ed1bfbfef6a14dde <a59b9958416096dd21dc4f62b0c5be525d459ca8
  4. Affected versionversion=6450ef55905688602175fae4ed1bfbfef6a14dde <dbc35268e14d5d89c7a9db72009ad4dcd9ede646

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=6450ef55905688602175fae4ed1bfbfef6a14dde <9f342904216f378e88008bb0ce1ae200a4b99fe8; version=6450ef55905688602175fae4ed1bfbfef6a14dde <a59b9958416096dd21dc4f62b0c5be525d459ca8; version=6450ef55905688602175fae4ed1bfbfef6a14dde <dbc35268e14d5d89c7a9db72009ad4dcd9ede646

Published CVSS scores

7.1CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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

No sourced classifications are available.

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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