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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-68158 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix multiplication overflow in decode_new_up_state_weight() If a message of type CEPH_MSG_OSD_MAP contains a (maliciously) corrupted osdmap, out-of-bounds memory accesses may occur in decode_new_up_state_weight(). This happens because the bounds check for the new_state part is based on calculating its length depending on a len value read from the incoming message. This calculation may overflow leading to an incorrect bounds check. Subsequently, out-of-bounds reads may occur when decoding this part. This patch switches the multiplication to use check_mul_overflow() to abort processing the osdmap if an overflow occurred. Therefore, osdmaps/messages containing large values for len that result in a multiplication overflow are treated as invalid. [ idryomov: rename new_state_len -> new_state_item_size, formatting ]


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/05c90e059269f087becfcce23348496085835c29 kernel.org
https://git.kernel.org/stable/c/143ba49ead77ec483c0326f8aaad8649874e99c4 kernel.org
https://git.kernel.org/stable/c/1732d89dfcd74f6fde9ce70900d316c4a151c153 kernel.org
https://git.kernel.org/stable/c/2ceee3b77b83052648c40fef965f836fd7699d26 kernel.org
https://git.kernel.org/stable/c/98917a499ec7064c14fc56d180a4fd636fc2784c kernel.org
https://git.kernel.org/stable/c/bee4b5b53e7bff0467fd916cc44c9b190733c6bd kernel.org
https://git.kernel.org/stable/c/e4473751cc37db41f3f7da25d64a23e0c74570f1 kernel.org
https://git.kernel.org/stable/c/f6961070c326bd158c38fa48756cde2bd78c4aaa kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-68158
NVD Published Date:
08/10/2026
NVD Last Modified:
08/19/2026
Source:
kernel.org