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CVE-2022-49661— can: gs_usb: gs_usb_open/close(): fix memory leak

AI Predicted 5.5 Difficulty: Moderate EPSS 0.01% · P1

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da< 339fa9f80d3b94177a7a459c6d115d3b56007d5aaffected
d08e973a77d128b25e01a08c34d89593fdf222da< c1d806bc29ff7ffe0e2a023583c8720ed96cb0b0affected
d08e973a77d128b25e01a08c34d89593fdf222da< d91492638b054f4a359621ef216242be5973ed6baffected
d08e973a77d128b25e01a08c34d89593fdf222da< 6f655b5e13fa4b27e915b6c209ac0da74fd75963affected
d08e973a77d128b25e01a08c34d89593fdf222da< d0b8e223998866b3e7b2895927d4e9689b0a80d8affected
d08e973a77d128b25e01a08c34d89593fdf222da< 0e60230bc64355c80abe993d1719fdb318094e20affected
d08e973a77d128b25e01a08c34d89593fdf222da< ffb6cc6601ec7c8fa963dcf76025df4a02f2cf5caffected
d08e973a77d128b25e01a08c34d89593fdf222da< 2bda24ef95c0311ab93bda00db40486acf30bd0aaffected
… +10 more rows
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I. Basic Information for CVE-2022-49661

Vulnerability Information
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Vulnerability Title
can: gs_usb: gs_usb_open/close(): fix memory leak
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_open/close(): fix memory leak The gs_usb driver appears to suffer from a malady common to many USB CAN adapter drivers in that it performs usb_alloc_coherent() to allocate a number of USB request blocks (URBs) for RX, and then later relies on usb_kill_anchored_urbs() to free them, but this doesn't actually free them. As a result, this may be leaking DMA memory that's been used by the driver. This commit is an adaptation of the techniques found in the esd_usb2 driver where a similar design pattern led to a memory leak. It explicitly frees the RX URBs and their DMA memory via a call to usb_free_coherent(). Since the RX URBs were allocated in the gs_can_open(), we remove them in gs_can_close() rather than in the disconnect function as was done in esd_usb2. For more information, see the 928150fad41b ("can: esd_usb2: fix memory leak").
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gs_usb_open和gs_usb_close中内存泄漏。
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 d08e973a77d128b25e01a08c34d89593fdf222da ~ 339fa9f80d3b94177a7a459c6d115d3b56007d5a -
LinuxLinux 3.16 -

II. Public POCs for CVE-2022-49661

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III. Intelligence Information for CVE-2022-49661

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Patches & Fixes for CVE-2022-49661 (8)

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-49496media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko
CVE-2022-49487mtd: rawnand: intel: fix possible null-ptr-deref in ebu_nand_probe()
CVE-2022-49486ASoC: fsl: Fix refcount leak in imx_sgtl5000_probe
CVE-2022-49488drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected
CVE-2022-49489drm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm run
CVE-2022-49490drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is detected
CVE-2022-49491drm/rockchip: vop: fix possible null-ptr-deref in vop_bind()
CVE-2022-49492nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
CVE-2022-49493ASoC: rt5645: Fix errorenous cleanup order
CVE-2022-49494mtd: rawnand: cadence: fix possible null-ptr-deref in cadence_nand_dt_probe()
CVE-2022-49495drm/msm/hdmi: check return value after calling platform_get_resource_byname()
CVE-2022-49497net: remove two BUG() from skb_checksum_help()
CVE-2022-49503ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix
CVE-2022-49508HID: elan: Fix potential double free in elan_input_configured
CVE-2022-49506drm/mediatek: Add vblank register/unregister callback functions
CVE-2022-49504scsi: lpfc: Inhibit aborts if external loopback plug is inserted
CVE-2022-49505NFC: NULL out the dev->rfkill to prevent UAF
CVE-2022-49502media: rga: fix possible memory leak in rga_probe
CVE-2022-49499drm/msm: Fix null pointer dereferences without iommu
CVE-2022-49498ALSA: pcm: Check for null pointer of pointer substream before dereferencing it

Showing top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49661

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