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CVE-2024-38630— watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger

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watchdog:cpu5wdt.c模块cpu5wdt_trigger存在释放后重用漏洞。

AI Predicted 4.9 Difficulty: Hard EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1562.008

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9b1c063ffc075abf56f63e55d70b9778ff534314 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f19686d616500cd0d47b30cee82392b53f7f784a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 573601521277119f2e2ba5f28ae6e87fc594f4d4 affected
2.6.12 affected
< 2.6.12 unaffected
6.6.33≤ 6.6.* unaffected
6.9.4≤ 6.9.* unaffected
6.10≤ * unaffected
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I. Basic Information for CVE-2024-38630

Vulnerability Information
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Vulnerability Title
watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger When the cpu5wdt module is removing, the origin code uses del_timer() to de-activate the timer. If the timer handler is running, del_timer() could not stop it and will return directly. If the port region is released by release_region() and then the timer handler cpu5wdt_trigger() calls outb() to write into the region that is released, the use-after-free bug will happen. Change del_timer() to timer_shutdown_sync() in order that the timer handler could be finished before the port region is released.
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watchdog:cpu5wdt.c模块cpu5wdt_trigger存在释放后重用漏洞。
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 9b1c063ffc075abf56f63e55d70b9778ff534314 -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2024-38630

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III. Intelligence Information for CVE-2024-38630

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Other References for CVE-2024-38630 (3)

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-2024-38634 serial: max3100: Lock port->lock when calling uart_handle_cts_change()
CVE-2024-38633 serial: max3100: Update uart_driver_registered on driver removal
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-2024-38630

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