CVE-2020-25085: debian debian_linux Out-of-bounds Write
Vulnerability summary
CVE-2020-25085 is a medium (CVSS 5.0) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 50.4% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 10Timeline
- 25-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
QEMU 5.0.0 has a heap-based Buffer Overflow in flatview_read_continue in exec.c because hw/sd/sdhci.c mishandles a write operation in the SDHC_BLKSIZE case.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.0MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
- OSV · DebianEcosystem advisory · calculated5.0MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
- OSV · AlpineEcosystem advisory · calculated5.0MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
EPSS trend
Probability
0.63%
Chance of exploitation in the next 30 days
Percentile
50%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.63% 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
1 foundExploit Reference (bugs.launchpad.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- qemu< 1:5.2+dfsg-1
- debian_linuxEOL9.0 | 10.0
Alpine1 product
- qemu< 5.1.0-r1
Qemu1 product
- qemu5.0.0
Ubuntu1 product
- qemuAll versions (No fix recorded) | < 1:2.5+dfsg-5ubuntu10.48 | < 1:2.11+dfsg-1ubuntu7.34 | < 1:4.2-3ubuntu6.10
4 vendors · 5 products
References
14 links- lists.nongnu.org/archive/html/qemu-devel/2020-09/msg00733.htmlX Refsource MISCREPORTMailing ListPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2020/09/16/6X Refsource CONFIRMREPORTMailing ListPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2020/11/msg00047.htmlMailing ListX Refsource MLISTThird Party Advisory- www.openwall.com/lists/oss-security/2021/03/09/1Mailing ListX Refsource MLISTPatchThird Party Advisory
- lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing ListX Refsource MLISTThird Party Advisory