In the Linux kernel, the following vulnerability has been resolved: Squashfs: check the inode number is not the invalid value of zero Syskiller has produced an out of bounds access in fill_meta_index(). That out of bounds access is ultimately caused because the inode has an inode number with the invalid value of zero, which was not checked. The reason this causes the out of bounds access is due to following sequence of events: 1. Fill_meta_index() is called to allocate (via empty_meta_index()) and fill a metadata index. It however suffers a data read error and aborts, invalidating the newly returned empty metadata index. It does this by setting the inode number of the index to zero, which means unused (zero is not a valid inode number). 2. When fill_meta_index() is subsequently called again on another read operation, locate_meta_index() returns the previous index because it matches the inode number of 0. Because this index has been returned it is expected to have been filled, and because it hasn't been, an out of bounds access is performed. This patch adds a sanity check which checks that the inode number is not zero when the inode is created and returns -EINVAL if it is. [[email protected]: whitespace fix] Link: https://lkml.kernel.org/r/[email protected]
History

Sat, 23 Nov 2024 02:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 06 Sep 2024 14:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Aus
Redhat rhel E4s
Redhat rhel Tus
CPEs cpe:/o:redhat:rhel_aus:8.6
cpe:/o:redhat:rhel_e4s:8.6
cpe:/o:redhat:rhel_tus:8.6
Vendors & Products Redhat rhel Aus
Redhat rhel E4s
Redhat rhel Tus

Tue, 13 Aug 2024 23:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhel_eus:8.8

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-01T05:27:11.032Z

Updated: 2024-12-19T08:51:41.635Z

Reserved: 2024-02-19T14:20:24.204Z

Link: CVE-2024-26982

cve-icon Vulnrichment

Updated: 2024-08-02T00:21:05.866Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-05-01T06:15:15.610

Modified: 2024-11-21T09:03:32.917

Link: CVE-2024-26982

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-05-01T00:00:00Z

Links: CVE-2024-26982 - Bugzilla