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CVE-2024-38634— serial: max3100: Lock port->lock when calling uart_handle_cts_change()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于serial:max3100模块调用uart_handle_cts_change时锁定port->lock。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 7831d56b0a3544cbb6f82f76c34ca95e24d5b676< 44b38924135d2093e2ec1812969464845dd66dc9 affected
7831d56b0a3544cbb6f82f76c34ca95e24d5b676< ea9b35372b58ac2931bfc1d5bc25e839d1221e30 affected
7831d56b0a3544cbb6f82f76c34ca95e24d5b676< cc121e3722a0a2c8f716ef991e5425b180a5fb94 affected
7831d56b0a3544cbb6f82f76c34ca95e24d5b676< 78dbda51bb4241b88a52d71620f06231a341f9ba affected
7831d56b0a3544cbb6f82f76c34ca95e24d5b676< 8296bb9e5925b6634259c5d4daee88f0cc0884ec affected
7831d56b0a3544cbb6f82f76c34ca95e24d5b676< 93df2fba6c7dfa9a2f08546ea9a5ca4728758458 affected
7831d56b0a3544cbb6f82f76c34ca95e24d5b676< 865b30c8661924ee9145f442bf32cea549faa869 affected
7831d56b0a3544cbb6f82f76c34ca95e24d5b676< 77ab53371a2066fdf9b895246505f5ef5a4b5d47 affected
… +10 more rows
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I. Basic Information for CVE-2024-38634

Vulnerability Information
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Vulnerability Title
serial: max3100: Lock port->lock when calling uart_handle_cts_change()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: serial: max3100: Lock port->lock when calling uart_handle_cts_change() uart_handle_cts_change() has to be called with port lock taken, Since we run it in a separate work, the lock may not be taken at the time of running. Make sure that it's taken by explicitly doing that. Without it we got a splat: WARNING: CPU: 0 PID: 10 at drivers/tty/serial/serial_core.c:3491 uart_handle_cts_change+0xa6/0xb0 ... Workqueue: max3100-0 max3100_work [max3100] RIP: 0010:uart_handle_cts_change+0xa6/0xb0 ... max3100_handlerx+0xc5/0x110 [max3100] max3100_work+0x12a/0x340 [max3100]
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于serial:max3100模块调用uart_handle_cts_change时锁定port->lock。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 ~ 44b38924135d2093e2ec1812969464845dd66dc9 -
Linux Linux 2.6.30 -

II. Public POCs for CVE-2024-38634

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III. Intelligence Information for CVE-2024-38634

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Mailing List Discussions for CVE-2024-38634 (1)

Other References for CVE-2024-38634 (7)

Same Patch Batch · Linux · 2024-06-21 · 40 CVEs total

CVE-2024-36288 9.8 CRITICAL SUNRPC: Fix loop termination condition in gss_free_in_token_pages()
CVE-2024-38381 8.8 HIGH nfc: nci: Fix uninit-value in nci_rx_work
CVE-2024-38628 7.8 HIGH usb: gadget: u_audio: Fix race condition use of controls after free during gadget unbind.
CVE-2024-38626 7.8 HIGH fuse: clear FR_SENT when re-adding requests into pending list
CVE-2024-38623 7.8 HIGH fs/ntfs3: Use variable length array instead of fixed size
CVE-2024-38635 7.8 HIGH soundwire: cadence: fix invalid PDI offset
CVE-2024-38388 7.8 HIGH ALSA: hda/cs_dsp_ctl: Use private_free for control cleanup
CVE-2024-36286 7.8 HIGH netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()
CVE-2024-36477 7.8 HIGH tpm_tis_spi: Account for SPI header when allocating TPM SPI xfer buffer
CVE-2024-33619 7.8 HIGH efi: libstub: only free priv.runtime_map when allocated
CVE-2024-38659 7.3 HIGH enic: Validate length of nl attributes in enic_set_vf_port
CVE-2024-38780 dma-buf/sw-sync: don't enable IRQ from sync_print_obj()
CVE-2024-38662 bpf: Allow delete from sockmap/sockhash only if update is allowed
CVE-2024-39277 dma-mapping: benchmark: handle NUMA_NO_NODE correctly
CVE-2024-38637 greybus: lights: check return of get_channel_from_mode
CVE-2024-34777 dma-mapping: benchmark: fix node id validation
CVE-2024-38636 f2fs: multidev: fix to recognize valid zero block address
CVE-2024-38633 serial: max3100: Update uart_driver_registered on driver removal
CVE-2024-38632 vfio/pci: fix potential memory leak in vfio_intx_enable()
CVE-2024-31076 genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline

Showing top 20 of 40 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-38634

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