CVE-2024-41066

Advisory lineage Upstream: 0 Downstream: 61
Modified
Published: 29 Jul 2024, 14:57
Last modified:23 May 2026, 15:51

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Jul 2024, 14:57
Published
Vulnerability first disclosed
23 May 2026, 15:51
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

  • CWE-401•Missing Release of Memory after Effective Lifetime

    The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Affected Systems

  • linux•linux

    ≥ 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8, < 16ad1557cae582e79bb82dddd612d9bdfaa11d4c | ≥ 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8, < 267c61c4afed0ff9a2e83462abad3f41d8ca1f06 | ≥ 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8, < e7b75def33eae61ddaad6cb616c517dc3882eb2a | ≥ 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8, < 0983d288caf984de0202c66641577b739caad561 | 1a64564eee05128f773930649edfdd50cbe80656 | 5142c39253385702a4de8f897027e1d76fc333de | ≥ 5.12.17, < 5.13 | ≥ 5.13.2, < 5.14 | 5.14

  • linux•linux_kernel

    < 6.1.101 | ≥ 6.2, < 6.6.42 | ≥ 6.7, < 6.9.11 | 6.10:rc1 | 6.10:rc2 | 6.10:rc3 | 6.10:rc4 | 6.10:rc5

References (5)