CVE-2023-52979
Squashfs Signed Integer Overflow Null Pointer Dereference
Description
In the Linux kernel, the following vulnerability has been resolved: squashfs: harden sanity check in squashfs_read_xattr_id_table While mounting a corrupted filesystem, a signed integer '*xattr_ids' can become less than zero. This leads to the incorrect computation of 'len' and 'indexes' values which can cause null-ptr-deref in copy_bio_to_actor() or out-of-bounds accesses in the next sanity checks inside squashfs_read_xattr_id_table(). Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
INFO
Published Date :
March 27, 2025, 5:15 p.m.
Last Modified :
March 28, 2025, 6:11 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2023-52979.
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 27, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: squashfs: harden sanity check in squashfs_read_xattr_id_table While mounting a corrupted filesystem, a signed integer '*xattr_ids' can become less than zero. This leads to the incorrect computation of 'len' and 'indexes' values which can cause null-ptr-deref in copy_bio_to_actor() or out-of-bounds accesses in the next sanity checks inside squashfs_read_xattr_id_table(). Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Added Reference https://git.kernel.org/stable/c/29e774dcb27116c06b9c57b1f1f14a1623738989 Added Reference https://git.kernel.org/stable/c/72e544b1b28325fe78a4687b980871a7e4101f76 Added Reference https://git.kernel.org/stable/c/b30a74f83265c24d1d0842c6c3928cd2e775a3fb Added Reference https://git.kernel.org/stable/c/b7398efe24a965cf3937b716c0b1011c201c5d6e Added Reference https://git.kernel.org/stable/c/cf5d6612092408157db6bb500c70bf6d67c40fbc Added Reference https://git.kernel.org/stable/c/db76fc535fbdfbf29fd0b93e49627537ad794c8c Added Reference https://git.kernel.org/stable/c/de2785aa3448d1ee7be3ab47fd4a873025f1b3d7
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-52979 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-52979
weaknesses.