CVE-2026-72022llc: fix SAP refcount leak in llc_ui_autobind()
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: llc: fix SAP refcount leak in llc_ui_autobind() llc_ui_autobind() opens a SAP after choosing a dynamic LSAP. llc_sap_open() returns a reference owned by the caller, and llc_sap_add_socket() takes a second reference for the socket's membership in the SAP hash tables. llc_ui_bind() drops the caller's reference after adding the socket, but llc_ui_autobind() keeps it. When the socket is closed, llc_sap_remove_socket() releases only the socket reference, leaving the SAP on llc_sap_list with sk_count == 0. This is user-visible because repeated autobind and close cycles can consume all dynamic SAP values and make later autobinds fail with -EUSERS. Drop the caller's reference after a successful autobind, matching llc_ui_bind()'s ownership model.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 79dc4b508e3f2649390a1f745f7657813e5938ec; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a2f9fa31ae021ef1fdcaf3ab17bd49f9223dd6a4; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b589a965184dde49c43b8caf5bcc65715a7b4ef2; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c7881b6088276601beaccb7440b8d56eab0d65ae; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b2fc9955ddc7c4ca03be44b995193bd6486c62e1; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 61a7ff4a62003b55a15022567486741b3bd83914; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 21a537606fe35be2b85971a5fd35c0023b6ef98f; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 660667cd406648bbaffbd5c0d897c2263a852f11 | CNA record |
References
- https://git.kernel.org/stable/c/79dc4b508e3f2649390a1f745f7657813e5938ec
- https://git.kernel.org/stable/c/a2f9fa31ae021ef1fdcaf3ab17bd49f9223dd6a4
- https://git.kernel.org/stable/c/b589a965184dde49c43b8caf5bcc65715a7b4ef2
- https://git.kernel.org/stable/c/c7881b6088276601beaccb7440b8d56eab0d65ae
- https://git.kernel.org/stable/c/b2fc9955ddc7c4ca03be44b995193bd6486c62e1
- https://git.kernel.org/stable/c/61a7ff4a62003b55a15022567486741b3bd83914
- https://git.kernel.org/stable/c/21a537606fe35be2b85971a5fd35c0023b6ef98f
- https://git.kernel.org/stable/c/660667cd406648bbaffbd5c0d897c2263a852f11
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.