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Vulnerability Change Records for CVE-2021-47294

Change History

New CVE Received from kernel.org 5/21/2024 11:15:17 AM

Action Type Old Value New Value
Added Description

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

netrom: Decrease sock refcount when sock timers expire

Commit 63346650c1a9 ("netrom: switch to sock timer API") switched to use
sock timer API. It replaces mod_timer() by sk_reset_timer(), and
del_timer() by sk_stop_timer().

Function sk_reset_timer() will increase the refcount of sock if it is
called on an inactive timer, hence, in case the timer expires, we need to
decrease the refcount ourselves in the handler, otherwise, the sock
refcount will be unbalanced and the sock will never be freed.
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/25df44e90ff5959b5c24ad361b648504a7e39ef3 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/48866fd5c361ea417ed24b43fc2a7dc2f5b060ef [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/517a16b1a88bdb6b530f48d5d153478b2552d9a8 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/6811744bd0efb9e472cb15d066cdb460beb8cb8a [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/853262355518cd1247515b74e83fabf038aa6c29 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/a01634bf91f2b6c42583770eb6815fb6d1e251cf [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/bc1660206c3723c37ed4d622ad81781f1e987250 [No types assigned]