Use of Uninitialized Resource Affecting kernel-uek-debug-devel package, versions <0:5.15.0-302.167.6.el8uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELUEKDEBUGDEVEL-8185318
  • published15 Oct 2024
  • disclosed17 Aug 2024

Introduced: 17 Aug 2024

CVE-2024-42283  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-uek-debug-devel to version 0:5.15.0-302.167.6.el8uek or higher.
This issue was patched in ELSA-2024-12815.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug-devel package and not the kernel-uek-debug-devel package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

net: nexthop: Initialize all fields in dumped nexthops

struct nexthop_grp contains two reserved fields that are not initialized by nla_put_nh_group(), and carry garbage. This can be observed e.g. with strace (edited for clarity):

# ip nexthop add id 1 dev lo
# ip nexthop add id 101 group 1
# strace -e recvmsg ip nexthop get id 101
...
recvmsg(... [{nla_len=12, nla_type=NHA_GROUP},
             [{id=1, weight=0, resvd1=0x69, resvd2=0x67}]] ...) = 52

The fields are reserved and therefore not currently used. But as they are, they leak kernel memory, and the fact they are not just zero complicates repurposing of the fields for new ends. Initialize the full structure.

CVSS Scores

version 3.1