module: fix [e_shstrndx].sh_size=0 OOB access (CVE-2022-49444)

Summary

module: fix [e_shstrndx].sh_size=0 OOB access

Original description

The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved:

module: fix [e_shstrndx].sh_size=0 OOB access

It is trivial to craft a module to trigger OOB access in this line:

if (info->secstrings[strhdr->sh_size - 1] != '\0') {

BUG: unable to handle page fault for address: ffffc90000aa0fff
PGD 100000067 P4D 100000067 PUD 100066067 PMD 10436f067 PTE 0
Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 7 PID: 1215 Comm: insmod Not tainted 5.18.0-rc5-00007-g9bf578647087-dirty #10
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/01/2014
RIP: 0010:load_module+0x19b/0x2391

[rebased patch onto modules-next]

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"5.12.0"},{"fixed":"5.15.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.17.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.18.0"},{"fixed":"5.18.3"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2022-49444 linux
Ubuntu UBUNTU-CVE-2022-49444 linux-hwe-edge

Summary

Original description

Affected packages

Fix status by distribution

References