CVE-2019-20806 — An issue was discovered in the Linux kernel before 5
An issue was discovered in the Linux kernel before 5.2. There is a NULL pointer dereference in tw5864_handle_frame() in drivers/media/pci/tw5864/tw5864-video.c, which may cause denial of service, aka CID-2e7682ebfc75.
Published
2020-05-27T12:00:06.000Z
Last modified
2024-08-05T02:53:09.092Z
01What is this vulnerability?
An issue was discovered in the Linux kernel before 5.2. There is a NULL pointer dereference in tw5864_handle_frame() in drivers/media/pci/tw5864/tw5864-video.c, which may cause denial of service, aka CID-2e7682ebfc75.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2020-05-27T12:00:06.000Z
- Last modified: 2024-08-05T02:53:09.092Z
09References
- cdn.kernel.org — https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
- github.com — https://github.com/torvalds/linux/commit/2e7682ebfc750177a4944eeb56e97a3f0573452…
- git.kernel.org — https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2e768…
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
- www.debian.org — https://www.debian.org/security/2020/dsa-4698
- lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
- security.netapp.com — https://security.netapp.com/advisory/ntap-20200619-0001/
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