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CVE-2022-49569— spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers

AI Predicted 5.3 Difficulty: Moderate EPSS 0.24% · P15

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux1513ceee70f2bd523e025efe0c715328e1a43ffd< 76668d2a2f367d25ff448e6d7087406af7d7bb2baffected
1513ceee70f2bd523e025efe0c715328e1a43ffd< 684896e675edd8b669fd3e9f547c5038222d85bcaffected
1513ceee70f2bd523e025efe0c715328e1a43ffd< 58466e05390043d2805685c70f55f3f59711bdf2affected
1513ceee70f2bd523e025efe0c715328e1a43ffd< 49ffa473218012e765682343de2052eb4c1f06a7affected
1513ceee70f2bd523e025efe0c715328e1a43ffd< 4ceaa684459d414992acbefb4e4c31f2dfc50641affected
5.4affected
< 5.4unaffected
5.4.208≤ 5.4.*unaffected
… +4 more rows
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I. Basic Information for CVE-2022-49569

Vulnerability Information
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Vulnerability Title
spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers In case a IRQ based transfer times out the bcm2835_spi_handle_err() function is called. Since commit 1513ceee70f2 ("spi: bcm2835: Drop dma_pending flag") the TX and RX DMA transfers are unconditionally canceled, leading to NULL pointer derefs if ctlr->dma_tx or ctlr->dma_rx are not set. Fix the NULL pointer deref by checking that ctlr->dma_tx and ctlr->dma_rx are valid pointers before accessing them.
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DMA指针，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 1513ceee70f2bd523e025efe0c715328e1a43ffd ~ 76668d2a2f367d25ff448e6d7087406af7d7bb2b -
LinuxLinux 5.4 -

II. Public POCs for CVE-2022-49569

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III. Intelligence Information for CVE-2022-49569

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Patches & Fixes for CVE-2022-49569 (5)

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-2022-49569

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