CVE-2026-68158
CVE CVE-2026-68158EUVD EUVD-2026-55544Published 2026-08-10T11:59:24.000Z
What the advisory describes
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 ]
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 4.1.30 <4.2; patch: 6.6.148; 6b96b2d473701b45df3fea8dd9796b6ec39e6d54; patch: 7.2-rc5; 7405d73cea0d0e6c541f5c534078feeb46188844; 930c532869774ebf8af9efe9484c597f896a7d46 <bee4b5b53e7bff0467fd916cc44c9b190733c6bd; 6831c98ce0b8a3e88db64aa224372effd0dcc694; 4.4.17 <4.5; 930c532869774ebf8af9efe9484c597f896a7d46 <1732d89dfcd74f6fde9ce70900d316c4a151c153; 930c532869774ebf8af9efe9484c597f896a7d46 <143ba49ead77ec483c0326f8aaad8649874e99c4; patch: 6.18.42; 3.12.63 <3.13; 930c532869774ebf8af9efe9484c597f896a7d46 <05c90e059269f087becfcce23348496085835c29; 032951d32c13b7564dfba82758260cb7aa1149d2; patch: 0; 3.16.39 <3.17; 8777c9f654637d56f4c4ca54eb1bc7c609b70085; patch: 7.1.6; 3.18.39 <3.19; 4.7; 1196c36fd53c3b1615eb02f986cb727b1dfc1047; 3.10.103 <3.11; patch: 6.12.101; 4.6.6 <4.7; 3.14.75 <3.15; bbc3aa6b0e6050b2b2e04a08dd4d6423d576b196; 930c532869774ebf8af9efe9484c597f896a7d46 <98917a499ec7064c14fc56d180a4fd636fc2784c; 14877928f10667a5606383885d004f7185f33718
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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