CVE-2022-48648
"SFC Linux Kernel Null Pointer Dereference Vulnerability"
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]
INFO
Published Date :
April 28, 2024, 1:15 p.m.
Last Modified :
Jan. 14, 2025, 2:52 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected Linux packages to resolve this vulnerability.
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-2022-48648.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-48648 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-2022-48648
weaknesses.
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-2022-48648 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-48648 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]
Jan. 14, 2025
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 Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.146 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.71 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.19.12 *cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 No Types Assigned https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 Patch Changed Reference Type https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 No Types Assigned https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 Patch Changed Reference Type https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 No Types Assigned https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 Patch Changed Reference Type https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 No Types Assigned https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 Patch Changed Reference Type https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 No Types Assigned https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 Patch Changed Reference Type https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 No Types Assigned https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 Patch Changed Reference Type https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 No Types Assigned https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 Patch Changed Reference Type https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 No Types Assigned https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 Added Reference https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 Added Reference https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 Added Reference https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 28, 2024
Action Type Old Value New Value Added 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] Added Reference kernel.org https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 [No types assigned]