Executive Summary

Informations
Name CVE-2022-48648 First vendor Publication 2024-04-28
Vendor Cve Last vendor Modification 2024-04-29

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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]

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-48648

Sources (Detail)

https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3
https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998
https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7
https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03
Source Url

Alert History

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0
1
Date Informations
2024-04-29 17:27:26
  • Multiple Updates
2024-04-28 17:27:28
  • First insertion