CVE-2024-35857 Affecting bpftool package, versions <0:7.3.0-427.28.1.el9_4


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ORACLE9-BPFTOOL-7577749
  • published2 Aug 2024
  • disclosed17 May 2024

Introduced: 17 May 2024

CVE-2024-35857  (opens in a new tab)

How to fix?

Upgrade Oracle:9 bpftool to version 0:7.3.0-427.28.1.el9_4 or higher.
This issue was patched in ELSA-2024-4928.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

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

icmp: prevent possible NULL dereferences from icmp_build_probe()

First problem is a double call to __in_dev_get_rcu(), because the second one could return NULL.

if (__in_dev_get_rcu(dev) && __in_dev_get_rcu(dev)->ifa_list)

Second problem is a read from dev->ip6_ptr with no NULL check:

if (!list_empty(&rcu_dereference(dev->ip6_ptr)->addr_list))

Use the correct RCU API to fix these.

v2: add missing include <net/addrconf.h>

CVSS Scores

version 3.1