Service interruption via invalid offset-pointer free
Published Sep 15, 2025 · Updated Sep 15, 2025
Memory mismanagement in the Linux kernel i915 BIOS parser in 5.19 allows local users to interrupt service through malformed VBT data. On the exceptional branch in generate_lfp_data_ptrs(), the kernel passes ptrs, an offset within an allocation, to kfree() instead of passing the ptrs_block base pointer. Exploitation requires local low-privilege access and the affected Intel graphics path; the documented consequence is memory loss or kernel instability, not data disclosure or modification.
Summary
What happened
Memory mismanagement in the Linux kernel i915 BIOS parser in 5.19 allows local users to interrupt service through malformed VBT data. On the exceptional branch in generate_lfp_data_ptrs(), the kernel passes ptrs, an offset within an allocation, to kfree() instead of passing the ptrs_block base pointer. Exploitation requires local low-privilege access and the affected Intel graphics path; the documented consequence is memory loss or kernel instability, not data disclosure or modification.
The record
- CVE
- CVE-2022-50287
- Published
- Sep 15, 2025
- Updated
- Sep 15, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-401, T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 15, 2025CVE publishedPublication date reported by the CVE source.
- Sep 15, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=5.19
- Affected versionversion=a87d0a84760726445dcc0f0177623f0d683f3559 <1382901f75a5a7dc8eac05059fd0c7816def4eae
- Affected versionversion=a87d0a84760726445dcc0f0177623f0d683f3559 <4758d04014cfe6cdb6e9b4738d1d6728487bbb3a
- Affected versionversion=a87d0a84760726445dcc0f0177623f0d683f3559 <7c852e8f93f04e57c1e3883caa72542469c6c4c4
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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