CVE-2020-17380: debian debian_linux Out-of-bounds Write
Vulnerability summary
CVE-2020-17380 is a medium (CVSS 6.3) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 38.5% of scored vulnerabilities.
Not severe (CVSS 6.3, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 7Timeline
- 30-01-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.3MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
- OSV · DebianEcosystem advisory · calculated6.3MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
- OSV · AlpineEcosystem advisory · calculated6.3MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
EPSS trend
Probability
0.44%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
Increase +0.02 pp
From 0.42% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- qemu< 1:5.2+dfsg-10
- debian_linuxEOL9.0
Alpine1 product
- qemu< 5.1.0-r1
Qemu1 product
- qemu≤ 5.0.0
Ubuntu1 product
- qemu< 2.0.0+dfsg-2ubuntu1.47+esm6 | < 1:2.5+dfsg-5ubuntu10.48 | < 1:2.11+dfsg-1ubuntu7.34 | < 1:4.2-3ubuntu6.10
4 vendors · 5 products
References
12 links- bugzilla.redhat.com/show_bug.cgi?id=1862167X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
- lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01175.htmlX Refsource CONFIRMMailing ListPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2021/03/09/1Mailing ListX Refsource MLISTPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlMailing ListX Refsource MLISTThird Party Advisory
