CVE-2026-53282
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/06/2026
Last modified:
08/07/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
x86/kexec: Push kjump return address even for non-kjump kexec<br />
<br />
The version of purgatory code shipped by kexec-tools attempts to look above<br />
the top of its stack to find a return address for a kjump, even in a non-kjump<br />
kexec.<br />
<br />
After the commit in Fixes: the word above the stack might not be there,<br />
leading to a fault (which is at least now caught by my exception-handling code<br />
in kexec).<br />
<br />
That commit fixed things for the actual kjump path, but no longer<br />
"gratuitously" pushes the unused return address to the stack in the non-kjump<br />
path. Put that *back* in the non-kjump path, to prevent purgatory from<br />
crashing when trying to access it.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.14 (including) | 6.18.33 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.19 (including) | 7.0.10 (excluding) |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page