CVE-2020-25085

NameCVE-2020-25085
DescriptionQEMU 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2469-1
NVD severitymedium
Debian Bugs970540

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)stretch1:2.8+dfsg-6+deb9u9vulnerable
stretch (security)1:2.8+dfsg-6+deb9u16fixed
buster, buster (security)1:3.1+dfsg-8+deb10u8vulnerable
bullseye1:5.2+dfsg-11fixed
bookworm, sid1:6.1+dfsg-5fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcestretch1:2.8+dfsg-6+deb9u12DLA-2469-1
qemusource(unstable)1:5.2+dfsg-1970540

Notes

[buster] - qemu <postponed> (Can be fixed along in next qemu DSA)
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg00733.html
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01439.html
https://www.openwall.com/lists/oss-security/2020/09/16/6
https://bugs.launchpad.net/qemu/+bug/1892960
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Fsdhci_oob_write1
The second patch referenced appears not to be needed with the commited
fix and relates to the CVE-2020-17380 assignment.
Fixed by: https://git.qemu.org/?p=qemu.git;a=commit;h=dfba99f17feb6d4a129da19d38df1bcd8579d1c3 (v5.2.0-rc0)

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