Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2022-50453— gpiolib: cdev: fix NULL-pointer dereferences

EPSS 0.02% · P4
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2022-50453

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
gpiolib: cdev: fix NULL-pointer dereferences
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: gpiolib: cdev: fix NULL-pointer dereferences There are several places where we can crash the kernel by requesting lines, unbinding the GPIO device, then calling any of the system calls relevant to the GPIO character device's annonymous file descriptors: ioctl(), read(), poll(). While I observed it with the GPIO simulator, it will also happen for any of the GPIO devices that can be hot-unplugged - for instance any HID GPIO expander (e.g. CP2112). This affects both v1 and v2 uAPI. This fixes it partially by checking if gdev->chip is not NULL but it doesn't entirely remedy the situation as we still have a race condition in which another thread can remove the device after the check.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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，该漏洞源于未检查gdev->chip是否为空，可能导致空指针取消引用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux d7c51b47ac11e66f547b55640405c1c474642d72 ~ 6d79546622baab843172b52c3af035f83c1b21df -
LinuxLinux 4.8 -

II. Public POCs for CVE-2022-50453

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2022-50453

请登录查看更多情报信息。

Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

CVE-2022-50462MIPS: vpe-mt: fix possible memory leak while module exiting
CVE-2022-50448mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in
CVE-2022-50452net: sched: cake: fix null pointer access issue when cake_init() fails
CVE-2022-50451fs/ntfs3: Fix memory leak on ntfs_fill_super() error path
CVE-2022-50454drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()
CVE-2022-50457mtd: core: Fix refcount error in del_mtd_device()
CVE-2022-50456btrfs: fix resolving backrefs for inline extent followed by prealloc
CVE-2022-50458clk: tegra: Fix refcount leak in tegra210_clock_init
CVE-2022-50460cifs: Fix xid leak in cifs_flock()
CVE-2022-50459scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()
CVE-2022-50461net: ethernet: ti: am65-cpsw: Fix PM runtime leakage in am65_cpsw_nuss_ndo_slave_open()
CVE-2022-50467scsi: lpfc: Fix null ndlp ptr dereference in abnormal exit path for GFT_ID
CVE-2023-53488IB/hfi1: Fix possible panic during hotplug remove
CVE-2023-53489tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.
CVE-2022-50469staging: rtl8723bs: fix potential memory leak in rtw_init_drv_sw()
CVE-2022-50468platform/chrome: cros_usbpd_notify: Fix error handling in cros_usbpd_notify_init()
CVE-2022-50465ext4: fix leaking uninitialized memory in fast-commit journal
CVE-2022-50463powerpc/52xx: Fix a resource leak in an error handling path
CVE-2022-50464mt76: mt7915: Fix PCI device refcount leak in mt7915_pci_init_hif2()
CVE-2022-50449clk: samsung: Fix memory leak in _samsung_clk_register_pll()

Showing top 20 of 169 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50453

No comments yet

Leave a comment