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0

CVE-2024-50276

Disclosure Date: November 19, 2024 •
CVE-2024-50276
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

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)

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CVSS V3 Severity and Metrics
Base Score:
None
Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
Unknown
Attack Vector (AV):
Unknown
Attack Complexity (AC):
Unknown
Privileges Required (PR):
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User Interaction (UI):
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Scope (S):
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Confidentiality (C):
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Integrity (I):
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Availability (A):
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General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Linux 2cf0e77f5a0a
Linux not down converted
Prerequisites
Unknown
Discovered By
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PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • Linux

Products

  • Linux
Technical Analysis