CVE-2024-50145
Octeon EP NULL Pointer Dereference Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: octeon_ep: Add SKB allocation failures handling in __octep_oq_process_rx() build_skb() returns NULL in case of a memory allocation failure so handle it inside __octep_oq_process_rx() to avoid NULL pointer dereference. __octep_oq_process_rx() is called during NAPI polling by the driver. If skb allocation fails, keep on pulling packets out of the Rx DMA queue: we shouldn't break the polling immediately and thus falsely indicate to the octep_napi_poll() that the Rx pressure is going down. As there is no associated skb in this case, don't process the packets and don't push them up the network stack - they are skipped. Helper function is implemented to unmmap/flush all the fragment buffers used by the dropped packet. 'alloc_failures' counter is incremented to mark the skb allocation error in driver statistics. Found by Linux Verification Center (linuxtesting.org) with SVACE.
INFO
Published Date :
Nov. 7, 2024, 10:15 a.m.
Last Modified :
Nov. 15, 2024, 7:50 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-50145.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-50145 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-50145 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Nov. 15, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/09ce491112bbf0b866e2638d3e961c1c73d1f00b No Types Assigned https://git.kernel.org/stable/c/09ce491112bbf0b866e2638d3e961c1c73d1f00b Patch Changed Reference Type https://git.kernel.org/stable/c/2dedcb6f99f4c1a11944e7cc35dbeb9b18a5cbac No Types Assigned https://git.kernel.org/stable/c/2dedcb6f99f4c1a11944e7cc35dbeb9b18a5cbac Patch Changed Reference Type https://git.kernel.org/stable/c/c2d2dc4f88bb3cfc4f3cc320fd3ff51b0ae5b0ea No Types Assigned https://git.kernel.org/stable/c/c2d2dc4f88bb3cfc4f3cc320fd3ff51b0ae5b0ea Patch Changed Reference Type https://git.kernel.org/stable/c/eb592008f79be52ccef88cd9a5249b3fc0367278 No Types Assigned https://git.kernel.org/stable/c/eb592008f79be52ccef88cd9a5249b3fc0367278 Patch Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.19 up to (excluding) 6.1.115 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.59 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.11.6 *cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 07, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: octeon_ep: Add SKB allocation failures handling in __octep_oq_process_rx() build_skb() returns NULL in case of a memory allocation failure so handle it inside __octep_oq_process_rx() to avoid NULL pointer dereference. __octep_oq_process_rx() is called during NAPI polling by the driver. If skb allocation fails, keep on pulling packets out of the Rx DMA queue: we shouldn't break the polling immediately and thus falsely indicate to the octep_napi_poll() that the Rx pressure is going down. As there is no associated skb in this case, don't process the packets and don't push them up the network stack - they are skipped. Helper function is implemented to unmmap/flush all the fragment buffers used by the dropped packet. 'alloc_failures' counter is incremented to mark the skb allocation error in driver statistics. Found by Linux Verification Center (linuxtesting.org) with SVACE. Added Reference kernel.org https://git.kernel.org/stable/c/09ce491112bbf0b866e2638d3e961c1c73d1f00b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c2d2dc4f88bb3cfc4f3cc320fd3ff51b0ae5b0ea [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2dedcb6f99f4c1a11944e7cc35dbeb9b18a5cbac [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/eb592008f79be52ccef88cd9a5249b3fc0367278 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-50145 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-50145
weaknesses.