CVE-2025-29943
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the...
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.
- Record
CVE-2025-29943- CVSS 4.0
- 4.6 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N - Weakness
- CWE-123
- Updated
- 2026-11-02
EUVDEUVD-2026-2929
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.
- Record
EUVD-2026-2929- CVSS 4.0
- 4.6 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-4vw8-pffj-q9x7
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the...
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.
- Record
GHSA-4vw8-pffj-q9x7- CVSS 4.0
- 4.6 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-123
- Updated
- 2026-11-02
NVD
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.
- Record
CVE-2025-29943- CVSS 4.0
- 4.6 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-123
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2025-29943
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.
- Record
DEBIAN-CVE-2025-29943- CVSS 4.0
- 4.6 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVUBUNTU-CVE-2025-29943
Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.
- Record
UBUNTU-CVE-2025-29943- CVSS 4.0
- 4.6 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2026:11242-1 No score
spectre-meltdown-checker-26.36.0602723-1.1 on GA media
These are all security issues fixed in the spectre-meltdown-checker-26.36.0602723-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:11242-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
linux-firmwareAlpaquita:23 |
20221109-r0 and later | None known |
linux-firmwareAlpaquita:25 |
20250509-r0 and later | None known |
linux-firmwareAlpaquita:stream |
20230625-r0 up to 20251125-r1 | 20251125-r1 |
amd64-microcodeDebian:12 |
All versions, plus listed versions 0.20120117-11.20120117-11.20120117-21.20120117-2~bpo60+11.20120910-1 Show 45 moreShow less1.20120910-1~bpo60+11.20120910-21.20120910-2~bpo60+11.20120910-31.20141028.11.20160316.12.20120910-12.20120910-1~bpo70+12.20131007.12.20131007.1+really20130710.12.20141028.12.20141028.1~bpo70+12.20160316.12.20160316.1~bpo70+12.20160316.1~deb8u13.20160316.13.20160316.23.20160316.33.20171205.13.20171205.23.20180515.13.20180524.13.20180524.1~bpo9+13.20181128.13.20181128.1~bpo9+13.20181128.1~deb8u13.20181128.1~deb9u13.20181128.1~deb9u23.20191021.13.20191218.13.20220411.13.20220411.23.20230414.13.20230719.13.20230719.1~deb10u13.20230719.1~deb11u13.20230719.1~deb12u13.20230808.13.20230808.1.13.20230808.1.1~deb11u13.20230808.1.1~deb12u13.20230823.13.20231019.13.20240116.23.20240116.2+nmu1 |
None known |
amd64-microcodeDebian:13 |
All versions, plus listed versions 0.20120117-11.20120117-11.20120117-21.20120117-2~bpo60+11.20120910-1 Show 45 moreShow less1.20120910-1~bpo60+11.20120910-21.20120910-2~bpo60+11.20120910-31.20141028.11.20160316.12.20120910-12.20120910-1~bpo70+12.20131007.12.20131007.1+really20130710.12.20141028.12.20141028.1~bpo70+12.20160316.12.20160316.1~bpo70+12.20160316.1~deb8u13.20160316.13.20160316.23.20160316.33.20171205.13.20171205.23.20180515.13.20180524.13.20180524.1~bpo9+13.20181128.13.20181128.1~bpo9+13.20181128.1~deb8u13.20181128.1~deb9u13.20181128.1~deb9u23.20191021.13.20191218.13.20220411.13.20220411.23.20230414.13.20230719.13.20230719.1~deb10u13.20230719.1~deb11u13.20230719.1~deb12u13.20230808.13.20230808.1.13.20230808.1.1~deb11u13.20230808.1.1~deb12u13.20230823.13.20231019.13.20240116.23.20240116.2+nmu1 |
None known |
amd64-microcodeDebian:14 |
before 3.20251202.1, plus listed versions 0.20120117-11.20120117-11.20120117-21.20120117-2~bpo60+11.20120910-1 Show 45 moreShow less1.20120910-1~bpo60+11.20120910-21.20120910-2~bpo60+11.20120910-31.20141028.11.20160316.12.20120910-12.20120910-1~bpo70+12.20131007.12.20131007.1+really20130710.12.20141028.12.20141028.1~bpo70+12.20160316.12.20160316.1~bpo70+12.20160316.1~deb8u13.20160316.13.20160316.23.20160316.33.20171205.13.20171205.23.20180515.13.20180524.13.20180524.1~bpo9+13.20181128.13.20181128.1~bpo9+13.20181128.1~deb8u13.20181128.1~deb9u13.20181128.1~deb9u23.20191021.13.20191218.13.20220411.13.20220411.23.20230414.13.20230719.13.20230719.1~deb10u13.20230719.1~deb11u13.20230719.1~deb12u13.20230808.13.20230808.1.13.20230808.1.1~deb11u13.20230808.1.1~deb12u13.20230823.13.20231019.13.20240116.23.20240116.2+nmu1 |
3.20251202.1 |
amd64-microcodeUbuntu:14.04:LTS |
All versions, plus listed versions 1.20120910-32.20131007.1+really20130710.13.20180524.1~ubuntu0.14.04.13.20180524.1~ubuntu0.14.04.2+really20130710.13.20180524.1~ubuntu0.14.04.2+really20130710.1ubuntu1 |
None known |
amd64-microcodeUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 2.20141028.12.20160316.13.20180524.1~ubuntu0.16.04.13.20180524.1~ubuntu0.16.04.23.20191021.1ubuntu0.16.04.1 Show 4 moreShow less3.20191021.1+really3.20180524.1~ubuntu0.16.04.23.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm13.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm23.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm3 |
None known |
amd64-microcodeUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 3.20160316.33.20171205.13.20180524.1~ubuntu0.18.04.13.20180524.1~ubuntu0.18.04.23.20191021.1ubuntu0.18.04.2 Show 4 moreShow less3.20191021.1+really3.20181128.1~ubuntu0.18.04.13.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm13.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm23.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm3 |
None known |
amd64-microcodeUbuntu:20.04:LTS |
All versions, plus listed versions 3.20181128.1ubuntu23.20191021.1ubuntu13.20191218.1ubuntu13.20191218.1ubuntu1.13.20191218.1ubuntu1.23.20191218.1ubuntu1.3 |
None known |
Show 5 moreShow less
| Package | Affected | Fixed |
|---|---|---|
amd64-microcodeUbuntu:22.04:LTS |
All versions, plus listed versions 3.20191218.1ubuntu23.20191218.1ubuntu2.13.20191218.1ubuntu2.23.20191218.1ubuntu2.3 |
None known |
amd64-microcodeUbuntu:24.04:LTS |
before 3.20251202.1ubuntu0.24.04.1, plus listed versions 3.20230808.1.1ubuntu13.20231019.1ubuntu13.20231019.1ubuntu23.20231019.1ubuntu2.13.20250311.1ubuntu0.24.04.1 |
3.20251202.1ubuntu0.24.04.1 |
amd64-microcodeUbuntu:25.10 |
before 3.20251202.1ubuntu0.25.10.1, plus listed versions 3.20240820.1ubuntu13.20250311.1ubuntu13.20250708.1ubuntu1 |
3.20251202.1ubuntu0.25.10.1 |
amd64-microcodeUbuntu:26.04:LTS |
before 3.20251202.1ubuntu1, plus listed versions 3.20250708.1ubuntu13.20250708.1ubuntu2 |
3.20251202.1ubuntu1 |
spectre-meltdown-checkeropenSUSE:Tumbleweed From an advisory covering 28 CVEs |
before 26.36.0602723-1.1 | 26.36.0602723-1.1 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | fevar54/POC_CVE-2025-29943_Write-what-where-Condition | 2026-01-20 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-29943 is a medium vulnerability (CVSS 4.6) in Amd Epyc™ 8004 Series Processors, published January 16, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 13th percentile. Fixed in linux-firmware 20251125-r1.
References
amd.com/en/resources/product-security/bulletin/AMD-SB-3027.html
nvd.nist.gov/vuln/detail/CVE-2025-29943
github.com/advisories/GHSA-4vw8-pffj-q9x7
docs.bell-sw.com/security/cves/CVE-2025-29943
security-tracker.debian.org/tracker/CVE-2025-29943
ubuntu.com/security/CVE-2025-29943
Show 29 moreShow less
cve.org/CVERecord?id=CVE-2025-29943
suse.com/security/cve/CVE-2017-5715
Left out here: 32 versions. The JSON record has them.