CVE - CVE-2022-49762

CVE-ID
CVE-2022-49762	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: ntfs: check overflow when iterating ATTR_RECORDs Kernel iterates over ATTR_RECORDs in mft record in ntfs_attr_find(). Because the ATTR_RECORDs are next to each other, kernel can get the next ATTR_RECORD from end address of current ATTR_RECORD, through current ATTR_RECORD length field. The problem is that during iteration, when kernel calculates the end address of current ATTR_RECORD, kernel may trigger an integer overflow bug in executing `a = (ATTR_RECORD)((u8)a + le32_to_cpu(a->length))`. This may wrap, leading to a forever iteration on 32bit systems. This patch solves it by adding some checks on calculating end address of current ATTR_RECORD during iteration.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/45683723f6b53e39e8a4cec0894e61fd6ec71989 URL:https://git.kernel.org/stable/c/45683723f6b53e39e8a4cec0894e61fd6ec71989 MISC:https://git.kernel.org/stable/c/5559eb5809353a83a40a1e4e7f066431c7b83020 URL:https://git.kernel.org/stable/c/5559eb5809353a83a40a1e4e7f066431c7b83020 MISC:https://git.kernel.org/stable/c/63095f4f3af59322bea984a6ae44337439348fe0 URL:https://git.kernel.org/stable/c/63095f4f3af59322bea984a6ae44337439348fe0 MISC:https://git.kernel.org/stable/c/785b2af9654b8beac55644e36da0085c5d776361 URL:https://git.kernel.org/stable/c/785b2af9654b8beac55644e36da0085c5d776361 MISC:https://git.kernel.org/stable/c/86f36de14dce5802856bb7a5921d74439db00b64 URL:https://git.kernel.org/stable/c/86f36de14dce5802856bb7a5921d74439db00b64 MISC:https://git.kernel.org/stable/c/957732a09c3828267c2819d31c425aa793dd475b URL:https://git.kernel.org/stable/c/957732a09c3828267c2819d31c425aa793dd475b MISC:https://git.kernel.org/stable/c/b612f924f296408d7d02fb4cd01218afd4ed7184 URL:https://git.kernel.org/stable/c/b612f924f296408d7d02fb4cd01218afd4ed7184 MISC:https://git.kernel.org/stable/c/b63ddb3ba61e2d3539f87e095c881e552bc45dab URL:https://git.kernel.org/stable/c/b63ddb3ba61e2d3539f87e095c881e552bc45dab
Assigning CNA
kernel.org
Date Record Created
20250327	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250327)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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