CVE-2021-47047
See a problem?- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47047
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47047.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47047
- Related
- Published
- 2024-02-28T09:15:40Z
- Modified
- 2024-09-18T01:00:20Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
spi: spi-zynqmp-gqspi: return -ENOMEM if dmamapsingle fails
The spi controller supports 44-bit address space on AXI in DMA mode, so set dmaaddrt width to 44-bit to avoid using a swiotlb mapping. In addition, if dmamapsingle fails, it should return immediately instead of continuing doing the DMA operation which bases on invalid address.
This fixes the following crash which occurs in reading a big block from flash:
[ 123.633577] zynqmp-qspi ff0f0000.spi: swiotlb buffer is full (sz: 4194304 bytes), total 32768 (slots), used 0 (slots) [ 123.644230] zynqmp-qspi ff0f0000.spi: ERR:rxdma:memory not mapped [ 123.784625] Unable to handle kernel paging request at virtual address 00000000003fffc0 [ 123.792536] Mem abort info: [ 123.795313] ESR = 0x96000145 [ 123.798351] EC = 0x25: DABT (current EL), IL = 32 bits [ 123.803655] SET = 0, FnV = 0 [ 123.806693] EA = 0, S1PTW = 0 [ 123.809818] Data abort info: [ 123.812683] ISV = 0, ISS = 0x00000145 [ 123.816503] CM = 1, WnR = 1 [ 123.819455] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000805047000 [ 123.825887] [00000000003fffc0] pgd=0000000803b45003, p4d=0000000803b45003, pud=0000000000000000 [ 123.834586] Internal error: Oops: 96000145 [#1] PREEMPT SMP
- References
-
- https://git.kernel.org/stable/c/126bdb606fd2802454e6048caef1be3e25dd121e
- https://git.kernel.org/stable/c/5980a3b9c933408bc22b0e349b78c3ebd7cbf880
- https://git.kernel.org/stable/c/bad5a23cf2b477fa78b85fd392736dae09a1e818
- https://git.kernel.org/stable/c/c26c026eb496261dbc0adbf606cc81989cd2038c
- https://security-tracker.debian.org/tracker/CVE-2021-47047
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source