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CVE-2024-35857

Disclosure Date: May 17, 2024
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Description

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>

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CVSS V3 Severity and Metrics
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General Information

Vendors

  • Linux

Products

  • Linux
Technical Analysis