CVE-2026-68158 Affecting kernel-obs-build package, versions <6.4.0-150600.23.135.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.76% (54th percentile)

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  • Snyk IDSNYK-SLES156-KERNELOBSBUILD-20253922
  • published29 Sept 2026
  • disclosed28 Sept 2026

Introduced: 28 Sep 2026

NewCVE-2026-68158  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 kernel-obs-build to version 6.4.0-150600.23.135.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-obs-build package and not the kernel-obs-build package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

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 ]

CVSS Base Scores

version 3.1