CVE-2022-47943
published 2022-12-23CVE-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…
PriorityP345high8.1CVSS 3.1
AVNACLPRLUINSUCHINAH
EPSS
3.50%
88.0th percentile
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.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.19.6-1 (bookworm) | linux 5.19.6-1 (bookworm) |
| linux | linux_kernel | >= 0 < 5.19.6-1 | 5.19.6-1 |
| linux | linux_kernel | >= 0 < 5.19.6-1 | 5.19.6-1 |
| linux | linux_kernel | >= 0 < 5.19.6-1 | 5.19.6-1 |
| linux | linux_kernel | >= 5.15 < 5.15.62 | 5.15.62 |
| linux | linux_kernel | >= 5.16 < 5.18.18 | 5.18.18 |
| linux | linux_kernel | >= 5.19 < 5.19.2 | 5.19.2 |
| msrc | cbl2_kernel_5.15.86.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv8.1HIGH
vendor_debian8.1HIGH
vendor_msrc8.1HIGH
vendor_redhat8.1HIGH
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Red Hat
kernel: large length in the zero DataOffset case in smb2_write() processing could result in out-of-bounds read
vendor_redhat·2022-12-22·CVSS 8.1
CVE-2022-47943 [HIGH] CWE-125 kernel: large length in the zero DataOffset case in smb2_write() processing could result in out-of-bounds read
kernel: large length in the zero DataOffset case in smb2_write() processing could result in out-of-bounds read
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.
Statement: There was no shipped kernel version that was seen affected by this problem. These files are not built in our source code.
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not affected
Package: kernel (Red Hat Enterprise Linux
Microsoft
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.
vendor_msrc·2022-12-13·CVSS 8.1
CVE-2022-47943 [HIGH] CWE-125 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.
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the C
Debian
CVE-2022-47943: linux - An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5....
vendor_debian·2022·CVSS 8.1
CVE-2022-47943 [HIGH] CVE-2022-47943: linux - An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5....
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.
Scope: local
bookworm: resolved (fixed in 5.19.6-1)
bullseye: resolved
forky: resolved (fixed in 5.19.6-1)
sid: resolved (fixed in 5.19.6-1)
trixie: resolved (fixed in 5.19.6-1)
OSV
CVE-2022-47943: An issue was discovered in ksmbd in the Linux kernel 5
osv·2022-12-23·CVSS 8.1
CVE-2022-47943 [HIGH] CVE-2022-47943: An issue was discovered in ksmbd in the Linux kernel 5
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.
GHSA
GHSA-m847-mpgv-7mwr: An issue was discovered in ksmbd in the Linux kernel before 5
ghsa_unreviewed·2022-12-23
CVE-2022-47943 [HIGH] CWE-125 GHSA-m847-mpgv-7mwr: An issue was discovered in ksmbd in the Linux kernel before 5
An issue was discovered in ksmbd in the Linux kernel 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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://www.openwall.com/lists/oss-security/2022/12/23/10https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac60778b87e45576d7bfdbd6f53df902654e6f09https://github.com/torvalds/linux/commit/ac60778b87e45576d7bfdbd6f53df902654e6f09https://security.netapp.com/advisory/ntap-20230216-0006/https://www.zerodayinitiative.com/advisories/ZDI-22-1691/http://www.openwall.com/lists/oss-security/2022/12/23/10https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac60778b87e45576d7bfdbd6f53df902654e6f09https://github.com/torvalds/linux/commit/ac60778b87e45576d7bfdbd6f53df902654e6f09https://security.netapp.com/advisory/ntap-20230216-0006/https://www.zerodayinitiative.com/advisories/ZDI-22-1691/
2022-12-23
Published