CVE-2022-49569
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49569
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49569.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49569
- Downstream
- Related
- Published
- 2025-02-26T07:01:32Z
- Modified
- 2025-10-01T20:16:48Z
- 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
- [none]
- 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.
- References
-
- https://git.kernel.org/stable/c/49ffa473218012e765682343de2052eb4c1f06a7
- https://git.kernel.org/stable/c/4ceaa684459d414992acbefb4e4c31f2dfc50641
- https://git.kernel.org/stable/c/58466e05390043d2805685c70f55f3f59711bdf2
- https://git.kernel.org/stable/c/684896e675edd8b669fd3e9f547c5038222d85bc
- https://git.kernel.org/stable/c/76668d2a2f367d25ff448e6d7087406af7d7bb2b