5.5 CVE-2024-41066

Patch
 

In the Linux kernel, the following vulnerability has been resolved: ibmvnic: Add tx check to prevent skb leak Below is a summary of how the driver stores a reference to an skb during transmit: tx_buff[free_map[consumer_index]]->skb = new_skb; free_map[consumer_index] = IBMVNIC_INVALID_MAP; consumer_index ++; Where variable data looks like this: free_map == [4, IBMVNIC_INVALID_MAP, IBMVNIC_INVALID_MAP, 0, 3] consumer_index^ tx_buff == [skb=null, skb=<ptr>, skb=<ptr>, skb=null, skb=null] The driver has checks to ensure that free_map[consumer_index] pointed to a valid index but there was no check to ensure that this index pointed to an unused/null skb address. So, if, by some chance, our free_map and tx_buff lists become out of sync then we were previously risking an skb memory leak. This could then cause tcp congestion control to stop sending packets, eventually leading to ETIMEDOUT. Therefore, add a conditional to ensure that the skb address is null. If not then warn the user (because this is still a bug that should be patched) and free the old pointer to prevent memleak/tcp problems.
https://nvd.nist.gov/vuln/detail/CVE-2024-41066

Categories

CWE-401

References


 

CPE

cpe start end
Configuration 1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* < 6.1.101
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* >= 6.2 < 6.6.42
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* >= 6.7 < 6.9.11
cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:*


REMEDIATION


Patch

Url
https://git.kernel.org/stable/c/0983d288caf984de0202c66641577b739caad561
https://git.kernel.org/stable/c/16ad1557cae582e79bb82dddd612d9bdfaa11d4c
https://git.kernel.org/stable/c/267c61c4afed0ff9a2e83462abad3f41d8ca1f06
https://git.kernel.org/stable/c/e7b75def33eae61ddaad6cb616c517dc3882eb2a
https://git.kernel.org/stable/c/0983d288caf984de0202c66641577b739caad561
https://git.kernel.org/stable/c/16ad1557cae582e79bb82dddd612d9bdfaa11d4c
https://git.kernel.org/stable/c/267c61c4afed0ff9a2e83462abad3f41d8ca1f06
https://git.kernel.org/stable/c/e7b75def33eae61ddaad6cb616c517dc3882eb2a


EXPLOITS


Exploit-db.com

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No known exploits

POC Github

Url

Other Nist (github, ...)

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No known exploits


CAPEC


Common Attack Pattern Enumerations and Classifications

id description severity
No entry