CVE-2022-47943
HIGHCVSS 8.1/10EPSS 3.50%
Last modified
CVE-2022-47943 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is an out-of-bounds read and OOPS for SMB2_WRITE, when there is a large length in the zero DataOffset case.. EPSS estimates a 3.50% chance of exploitation in the next 30 days.
Description
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is an out-of-bounds read and OOPS for SMB2_WRITE, when there is a large length in the zero DataOffset case.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 5.15.62 |
| Linux | Linux Kernel | >= 5.16, < 5.18.18 |
| Linux | Linux Kernel | >= 5.19, < 5.19.2 |
References
- http://www.openwall.com/lists/oss-security/2022/12/23/10Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2Mailing List, Patch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac60778b87e45576d7bfdbd6f53df902654e6f09Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/ac60778b87e45576d7bfdbd6f53df902654e6f09Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230216-0006/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-22-1691/Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2022/12/23/10Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2Mailing List, Patch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac60778b87e45576d7bfdbd6f53df902654e6f09Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/ac60778b87e45576d7bfdbd6f53df902654e6f09Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230216-0006/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-22-1691/Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-47943?
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is an out-of-bounds read and OOPS for SMB2_WRITE, when there is a large length in the zero DataOffset case.
How severe is CVE-2022-47943?
CVE-2022-47943 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 3.50% probability of exploitation in the next 30 days.
How do I fix CVE-2022-47943?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2022-47943?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST