A vulnerability in the Linux kernel's kexec purgatory code was identified where the code attempts to access a return address above the top of its… (CVE-2026-53282)
A vulnerability in the Linux kernel's kexec purgatory code was identified where the code attempts to access a return address above the top of its stack even in non-kjump kexec paths. This can lead to a fault causing a crash. The issue arises because the return address is not pushed onto the stack in the non-kjump path, unlike the kjump path. The vulnerability has been resolved by ensuring the return address is pushed in the non-kjump path to prevent purgatory from crashing.
AI Analysis
Technical Summary
The Linux kernel's kexec purgatory code incorrectly assumes the presence of a return address above the stack top in non-kjump kexec paths, leading to a fault when accessing it. A prior fix addressed the kjump path but removed the pushing of the return address in the non-kjump path, causing the crash. The resolution reinstates pushing the return address in the non-kjump path to prevent faults during purgatory execution.
Potential Impact
This vulnerability causes a denial of service condition by crashing the purgatory code during kexec operations. There is no confidentiality or integrity impact reported. The attack vector requires local access with low privileges. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this is a Linux kernel issue, monitor official kernel updates and apply patches when available to address this fault in kexec purgatory code.
A vulnerability in the Linux kernel's kexec purgatory code was identified where the code attempts to access a return address above the top of its… (CVE-2026-53282)
Description
A vulnerability in the Linux kernel's kexec purgatory code was identified where the code attempts to access a return address above the top of its stack even in non-kjump kexec paths. This can lead to a fault causing a crash. The issue arises because the return address is not pushed onto the stack in the non-kjump path, unlike the kjump path. The vulnerability has been resolved by ensuring the return address is pushed in the non-kjump path to prevent purgatory from crashing.
CVSS v3.1
Score 5.5medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's kexec purgatory code incorrectly assumes the presence of a return address above the stack top in non-kjump kexec paths, leading to a fault when accessing it. A prior fix addressed the kjump path but removed the pushing of the return address in the non-kjump path, causing the crash. The resolution reinstates pushing the return address in the non-kjump path to prevent faults during purgatory execution.
Potential Impact
This vulnerability causes a denial of service condition by crashing the purgatory code during kexec operations. There is no confidentiality or integrity impact reported. The attack vector requires local access with low privileges. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this is a Linux kernel issue, monitor official kernel updates and apply patches when available to address this fault in kexec purgatory code.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-865v-r97p-c9pq
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-53282"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a4e4ed9c9d9e3dbe3288518
Added to database: 07/08/2026, 13:21:29 UTC
Last enriched: 07/08/2026, 13:31:50 UTC
Last updated: 07/31/2026, 19:24:47 UTC
Views: 7
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