CVE-2021-47631
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47631
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47631.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-47631
- Related
- Published
- 2025-02-26T06:37:04Z
- Modified
- 2025-03-18T20:50:25.881019Z
- Downstream
- 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/0940795c6834fbe7705acc5c3d4b2f7a5f67527a
- https://git.kernel.org/stable/c/0a312ec66a03133d28570f07bc52749ccfef54da
- https://git.kernel.org/stable/c/83a1cde5c74bfb44b49cb2a940d044bb2380f4ea
- 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://security-tracker.debian.org/tracker/CVE-2021-47631
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.10.113-1
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