Critical severity9.8NVD Advisory· Published Dec 23, 2022· Updated Jun 17, 2026

CVE-2022-47939

Description

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2_TREE_DISCONNECT.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Linux/Kernel3 versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.15,<5.15.61
- (no CPE)
- (no CPE)range: 5.15 - 5.19 before 5.19.2
Linux/Ksmbdllm-fuzzy
Range: 5.15 - 5.19 before 5.19.2

Patches

Vulnerability mechanics

References

cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2nvdMailing ListPatchVendor Advisory
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/nvdMailing ListPatchVendor Advisory
github.com/torvalds/linux/commit/cf6531d98190fa2cf92a6d8bbc8af0a4740a223cnvdPatchThird Party Advisory
www.openwall.com/lists/oss-security/2022/12/23/10nvdMailing ListThird Party Advisory
www.secpod.com/blog/zero-day-server-message-block-smb-server-in-linux-kernel-5-15-has-a-critical-vulnerability-patch-ksmbd-immediately/nvdThird Party Advisory
www.zerodayinitiative.com/advisories/ZDI-22-1690/nvdThird Party AdvisoryVDB Entry

News mentions

No linked articles in our index yet.

cvss	0.637
epss	0.037
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000