CVE-2022-49444
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/02/2025
Last modified:
26/02/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
module: fix [e_shstrndx].sh_size=0 OOB access<br />
<br />
It is trivial to craft a module to trigger OOB access in this line:<br />
<br />
if (info->secstrings[strhdr->sh_size - 1] != &#39;\0&#39;) {<br />
<br />
BUG: unable to handle page fault for address: ffffc90000aa0fff<br />
PGD 100000067 P4D 100000067 PUD 100066067 PMD 10436f067 PTE 0<br />
Oops: 0000 [#1] PREEMPT SMP PTI<br />
CPU: 7 PID: 1215 Comm: insmod Not tainted 5.18.0-rc5-00007-g9bf578647087-dirty #10<br />
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/01/2014<br />
RIP: 0010:load_module+0x19b/0x2391<br />
<br />
[rebased patch onto modules-next]