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CVE

CVE-2022-2153

A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misb

A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

MEDIUM · CVSS 5.5 EPSS 0.00027
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-476NULL Pointer Dereference
CWE-476NULL Pointer Dereference
▤

Affected Products & Versions

4
linux kernel< 5.18
fedoraproject fedoraall versions
redhat enterprise linuxall versions
debian linuxall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 Aug 2022 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

27
rhsaRHSA-2022:8267Low
rhsaRHSA-2022:7683Moderate
rhsaRHSA-2022:7933Low
rhsaRHSA-2022:7444Moderate
siemens-csafSSA-794697
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=2069736Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/00b5f37189d24ac3ed46cb7f11742094778c46cePatchThird Party Advisory
https://github.com/torvalds/linux/commit/7ec37d1cbe17d8189d9562178d8b29167fe1c31aPatchThird Party Advisory
https://github.com/torvalds/linux/commit/b1e34d325397a33d97d845e312d7cf2a8b646b44PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing ListThird Party Advisory
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