CVE-2026-23436None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: net: shaper: protect from late creation of hierarchy We look up a netdev during prep of Netlink ops (pre- callbacks) and take a ref to it. Then later in the body of th…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
net: shaper: protect from late creation of hierarchy
We look up a netdev during prep of Netlink ops (pre- callbacks) and take a ref to it. Then later in the body of the callback we take its lock or RCU which are the actual protections.
The netdev may get unregistered in between the time we take the ref and the time we lock it. We may allocate the hierarchy after flush has already run, which would lead to a leak.
Take the instance lock in pre- already, this saves us from the race and removes the need for dedicated lock/unlock callbacks completely. After all, if there's any chance of write happening concurrently with the flush - we're back to leaking the hierarchy.
We may take the lock for devices which don't support shapers but we're only dealing with SET operations here, not taking the lock would be optimizing for an error case.
Linux >= 93954b40f6a4fc43226c01a15b02732f884500f1 < 719f6784f918f9e32f3ff3b197f900e852223f9dLinux >= 93954b40f6a4fc43226c01a15b02732f884500f1 < d22921727023e7852704965e935f4d1fc83a5ec9Linux >= 93954b40f6a4fc43226c01a15b02732f884500f1 < d75ec7e8ba1979a1eb0b9211d94d749cdce849c8Linux 6.13Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-99284Nonenet: skbuff: propagate shared-frag marker in skb_zerocopy()
CVE-2026-99283Nonenetfilter: conntrack: tcp: use UNACK timeout for non-closing RST packets
CVE-2026-99272Nonesmb: client: validate the data area in SMB2_read()
CVE-2026-99271NoneALSA: line6: Clear prev_fbuf on capture buffer release
CVE-2026-99273Noneksmbd: reserve space for the UTF-16 terminator in stream info
CVE-2026-99275Nonesmb: client: reject short SESSION_SETUP responses