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CVE-2024-42253— gpio: pca953x: fix pca953x_irq_bus_sync_unlock race

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。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。

CVSS 7.8 · High EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1564.008 · Email Hiding Rules

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 44896beae605b93f2232301befccb7ef42953198< 58a5c93bd1a6e949267400080f07e57ffe05ec34 affected
44896beae605b93f2232301befccb7ef42953198< e2ecdddca80dd845df42376e4b0197fe97018ba2 affected
44896beae605b93f2232301befccb7ef42953198< de7cffa53149c7b48bd1bb29b02390c9f05b7f41 affected
44896beae605b93f2232301befccb7ef42953198< bfc6444b57dc7186b6acc964705d7516cbaf3904 affected
4.7 affected
< 4.7 unaffected
6.1.101≤ 6.1.* unaffected
6.6.42≤ 6.6.* unaffected
… +2 more rows
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I. Basic Information for CVE-2024-42253

Vulnerability Information
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Vulnerability Title
gpio: pca953x: fix pca953x_irq_bus_sync_unlock race
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: gpio: pca953x: fix pca953x_irq_bus_sync_unlock race Ensure that `i2c_lock' is held when setting interrupt latch and mask in pca953x_irq_bus_sync_unlock() in order to avoid races. The other (non-probe) call site pca953x_gpio_set_multiple() ensures the lock is held before calling pca953x_write_regs(). The problem occurred when a request raced against irq_bus_sync_unlock() approximately once per thousand reboots on an i.MX8MP based system. * Normal case 0-0022: write register AI|3a {03,02,00,00,01} Input latch P0 0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0 0-0022: write register AI|08 {ff,00,00,00,00} Output P3 0-0022: write register AI|12 {fc,00,00,00,00} Config P3 * Race case 0-0022: write register AI|08 {ff,00,00,00,00} Output P3 0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register *** 0-0022: write register AI|12 {fc,00,00,00,00} Config P3 0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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 44896beae605b93f2232301befccb7ef42953198 ~ 58a5c93bd1a6e949267400080f07e57ffe05ec34 -
Linux Linux 4.7 -

II. Public POCs for CVE-2024-42253

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III. Intelligence Information for CVE-2024-42253

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Patches & Fixes for CVE-2024-42253 (1)

Same Patch Batch · Linux · 2024-08-08 · 7 CVEs total

CVE-2024-42256 7.5 HIGH cifs: Fix server re-repick on subrequest retry
CVE-2024-42257 ext4: use memtostr_pad() for s_volume_name
CVE-2024-42255 tpm: Use auth only after NULL check in tpm_buf_check_hmac_response()
CVE-2024-42254 io_uring: fix error pbuf checking
CVE-2024-42252 closures: Change BUG_ON() to WARN_ON()
CVE-2024-42251 mm: page_ref: remove folio_try_get_rcu()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42253

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