CVE-2022-49569

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Source
https://cve.org/CVERecord?id=CVE-2022-49569
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49569.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49569
Downstream
Related
Published
2025-02-26T02:23:13.209Z
Modified
2026-03-12T03:25:25.727463Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers
Details

In the Linux kernel, the following vulnerability has been resolved:

spi: bcm2835: bcm2835spihandle_err(): fix NULL pointer deref for non DMA transfers

In case a IRQ based transfer times out the bcm2835spihandleerr() function is called. Since commit 1513ceee70f2 ("spi: bcm2835: Drop dmapending flag") the TX and RX DMA transfers are unconditionally canceled, leading to NULL pointer derefs if ctlr->dmatx or ctlr->dmarx are not set.

Fix the NULL pointer deref by checking that ctlr->dmatx and ctlr->dmarx are valid pointers before accessing them.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49569.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1513ceee70f2bd523e025efe0c715328e1a43ffd
Fixed
76668d2a2f367d25ff448e6d7087406af7d7bb2b
Fixed
684896e675edd8b669fd3e9f547c5038222d85bc
Fixed
58466e05390043d2805685c70f55f3f59711bdf2
Fixed
49ffa473218012e765682343de2052eb4c1f06a7
Fixed
4ceaa684459d414992acbefb4e4c31f2dfc50641

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49569.json"