CVE-2021-47631
- Source
- https://cve.org/CVERecord?id=CVE-2021-47631
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47631.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47631
- Downstream
- Related
- Published
- 2025-02-26T06:37:04.400Z
- Modified
- 2026-03-10T23:51:43.555368Z
- 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:
ARM: davinci: da850-evm: Avoid NULL pointer dereference
With newer versions of GCC, there is a panic in da850evmconfigemac() when booting multiv5_defconfig in QEMU under the palmetto-bmc machine:
Unable to handle kernel NULL pointer dereference at virtual address 00000020 pgd = (ptrval) [00000020] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT ARM Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.15.0 #1 Hardware name: Generic DT based system PC is at da850evmconfigemac+0x1c/0x120 LR is at doone_initcall+0x50/0x1e0
The emacpdata pointer in socinfo is NULL because davincisocinfo only gets populated on davinci machines but da850evmconfigemac() is called on all machines via deviceinitcall().
Move the rmii_en assignment below the machine check so that it is only dereferenced when running on a supported SoC.
- References
-
- https://git.kernel.org/stable/c/89931d4762572aaee6edbe5673d41f8082de110f
- https://git.kernel.org/stable/c/a12b356d45cbb6e8a1b718d1436b3d6239a862f3
- https://git.kernel.org/stable/c/c06f476e5b74bcabb8c4a2fba55864a37e62843b
- https://git.kernel.org/stable/c/c5628533a3ece64235d04fe11ec44d2be99e423d
- https://git.kernel.org/stable/c/c64e2ed5cc376e137e572babfd2edc38b2cfb61b
- https://git.kernel.org/stable/c/0940795c6834fbe7705acc5c3d4b2f7a5f67527a
- https://git.kernel.org/stable/c/0a312ec66a03133d28570f07bc52749ccfef54da
- https://git.kernel.org/stable/c/83a1cde5c74bfb44b49cb2a940d044bb2380f4ea
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47631.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "2.6.33"
},
{
"fixed": "4.9.311"
}
]
},
{
"events": [
{
"introduced": "4.10"
},
{
"fixed": "4.14.276"
}
]
},
{
"events": [
{
"introduced": "4.15"
},
{
"fixed": "4.19.239"
}
]
},
{
"events": [
{
"introduced": "4.20"
},
{
"fixed": "5.4.190"
}
]
},
{
"events": [
{
"introduced": "5.5"
},
{
"fixed": "5.10.112"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.15.35"
}
]
},
{
"events": [
{
"introduced": "5.16"
},
{
"fixed": "5.17.4"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.18-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.18-rc2"
}
]
}
]