First published: Mon Aug 26 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Software | Affected Version | How to fix |
---|---|---|
Linux Linux kernel | >=4.7<4.19.320 | |
Linux Linux kernel | >=4.20<5.4.282 | |
Linux Linux kernel | >=5.5<5.10.224 | |
Linux Linux kernel | >=5.11<5.15.165 | |
Linux Linux kernel | >=5.16<6.1.105 | |
Linux Linux kernel | >=6.2<6.6.46 | |
Linux Linux kernel | >=6.7<6.10.5 | |
Linux Linux kernel | =6.11-rc1 | |
Linux Linux kernel | =6.11-rc2 | |
debian/linux | <=5.10.223-1 | 5.10.226-1 6.1.115-1 6.1.119-1 6.12.5-1 6.12.6-1 |
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