CVE-2024-50276

net: vertexcom: mse102x: Fix possible double free of TX skb

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

net: vertexcom: mse102x: Fix possible double free of TX skb

The scope of the TX skb is wider than just mse102x_tx_frame_spi(),
so in case the TX skb room needs to be expanded, we should free the
the temporary skb instead of the original skb. Otherwise the original
TX skb pointer would be freed again in mse102x_tx_work(), which leads
to crashes:

Internal error: Oops: 0000000096000004 [#2] PREEMPT SMP
CPU: 0 PID: 712 Comm: kworker/0:1 Tainted: G D 6.6.23
Hardware name: chargebyte Charge SOM DC-ONE (DT)
Workqueue: events mse102x_tx_work [mse102x]
pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : skb_release_data+0xb8/0x1d8
lr : skb_release_data+0x1ac/0x1d8
sp : ffff8000819a3cc0
x29: ffff8000819a3cc0 x28: ffff0000046daa60 x27: ffff0000057f2dc0
x26: ffff000005386c00 x25: 0000000000000002 x24: 00000000ffffffff
x23: 0000000000000000 x22: 0000000000000001 x21: ffff0000057f2e50
x20: 0000000000000006 x19: 0000000000000000 x18: ffff00003fdacfcc
x17: e69ad452d0c49def x16: 84a005feff870102 x15: 0000000000000000
x14: 000000000000024a x13: 0000000000000002 x12: 0000000000000000
x11: 0000000000000400 x10: 0000000000000930 x9 : ffff00003fd913e8
x8 : fffffc00001bc008
x7 : 0000000000000000 x6 : 0000000000000008
x5 : ffff00003fd91340 x4 : 0000000000000000 x3 : 0000000000000009
x2 : 00000000fffffffe x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
skb_release_data+0xb8/0x1d8
kfree_skb_reason+0x48/0xb0
mse102x_tx_work+0x164/0x35c [mse102x]
process_one_work+0x138/0x260
worker_thread+0x32c/0x438
kthread+0x118/0x11c
ret_from_fork+0x10/0x20
Code: aa1303e0 97fffab6 72001c1f 54000141 (f9400660)

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2024-10-21 CVE Reserved
2024-11-19 CVE Published
2024-11-19 CVE Updated
2024-11-19 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (5)

URL	Tag	Source
https://git.kernel.org/stable/c/2f207cbf0dd44278af2aa3ff0fc95b0f97cc4e4c	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/2cf0e77f5a0aa1ff336aa71743eda55c73902187	2024-11-14
https://git.kernel.org/stable/c/1325e838089da25217f4b403318a270fcdf88f34	2024-11-14
https://git.kernel.org/stable/c/91c9daa21f3ff8668f9e1d6c860024ce7ad64137	2024-11-14
https://git.kernel.org/stable/c/1f26339b2ed63d1e8e18a18674fb73a392f3660e	2024-11-07

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.17 < 6.1.117 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.1.117"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.17 < 6.6.61 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.6.61"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.17 < 6.11.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.11.8"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.17 < 6.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.12"		en		Affected