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]
References
Configurations
Configuration 1 (hide)
|
History
14 Jan 2025, 14:52
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3 - Patch | |
| References | () https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998 - Patch | |
| References | () https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 - Patch | |
| References | () https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03 - Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* |
|
| CWE | CWE-476 | |
| First Time |
Linux linux Kernel
Linux |
Information
Published : 2024-04-28 13:15
Updated : 2025-01-14 14:52
NVD link : CVE-2022-48648
Mitre link : CVE-2022-48648
CVE.ORG link : CVE-2022-48648
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference