Paper/Archive/CVE-2022-47939

CVE-2022-47939

mitre — An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2.

CVSS 9.8 (NVD, ADP agree)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 98.9.989 × 2019.8 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refcdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2 refgithub.com/torvalds/linux/commit/cf6531d98190fa2cf92a6d8bbc8af0a4740a223c refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf6531d98190fa2cf92a6d8bbc8af0a4740a223c refopenwall.com/lists/oss-security/2022/12/23/10 refzerodayinitiative.com/advisories/ZDI-22-1690 refsecpod.com/blog/zero-day-server-message-block-smb-server-in-linux-kernel-5-15-has-a-critical-vulnerability-patch-ksmbd-immediately