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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-48648 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: sfc: fix null pointer dereference in efx_hard_start_xmit Trying to get the channel from the tx_queue variable here is wrong because we can only be here if tx_queue is NULL, so we shouldn't dereference it. As the above comment in the code says, this is very unlikely to happen, but it's wrong anyway so let's fix it. I hit this issue because of a different bug that caused tx_queue to be NULL. If that happens, this is the error message that we get here: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [...] RIP: 0010:efx_hard_start_xmit+0x153/0x170 [sfc]


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 Patch 
https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 Patch 
https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 Patch 
https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 Patch 
https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 Patch 
https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 Patch 
https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 Patch 
https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-48648
NVD Published Date:
04/28/2024
NVD Last Modified:
01/14/2025
Source:
kernel.org