CVE-2026-72382
Kernel ksmbd DACL parse flaw allows remote memory exhaustion and crash via SMB2_SET_INFO.
Is CVE-2026-72382 being exploited?
Not confirmed. CVE-2026-72382 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.59% probability of exploitation in the next 30 days.
How severe is CVE-2026-72382?
CVE-2026-72382 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-72382?
Yes. A fix has been recorded for CVE-2026-72382. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-72382 affect?
CVE-2026-72382 affects Linux kernel (ksmbd SMB server module), Linux distributions with ksmbd enabled. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-72382?
Apply kernel/ksmbd patches or update kernels; disable ksmbd or block SMB if patching delayed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can send crafted SMB2_SET_INFO security descriptors to force oversized kernel allocations, causing OOM/crash (remote DoS) and possible memory corruption.
Immediate action required
- affected>= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 and < 16fb65ec15fe7c90f50a2115854bfd9a032d4023
- affected>= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 and < 282847c0cf22f2e961155ac8e42f6eeab7e16049
- affected>= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 and < d020e7f27bf65eecd3805404702f716b2b6d9e73
- affected>= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 and < 15a9e9b8f7f5d7f380ae54c6f5bcbc0bdcb0f3cd
- affected>= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 and < 60908f7ebcd9b6cde74ad5711fab0f49c7970949
- affected5.15
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.