netfs: Delete subtree of 'fs/netfs' when netfs module exits
Published Oct 21, 2024
5.5
MEDIUMCVSS 3.1
EPSS 0.24%
Description
In netfs_init() or fscache_proc_init(), we create dentry under 'fs/netfs', but in netfs_exit(), we only delete the proc entry of 'fs/netfs' without deleting its subtree. This triggers the following WARNING:
================================================================== remove_proc_entry: removing non-empty directory 'fs/netfs', leaking at least 'requests' WARNING: CPU: 4 PID: 566 at fs/proc/generic.c:717 remove_proc_entry+0x160/0x1c0 Modules linked in: netfs(-) CPU: 4 UID: 0 PID: 566 Comm: rmmod Not tainted 6.11.0-rc3 #860 RIP: 0010:remove_proc_entry+0x160/0x1c0 Call Trace: <TASK> netfs_exit+0x12/0x620 [netfs] __do_sys_delete_module.isra.0+0x14c/0x2e0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e ==================================================================
Therefore use remove_proc_subtree() instead of remove_proc_entry() to fix the above problem.
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 6.8StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<6.8
- Version 6.10.13StatusunaffectedConstraints<=6.10.*
- Version 6.11.2StatusunaffectedConstraints<=6.11.*
- Version 6.12StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
- ≥ 6.8 · < 6.10.13
- ≥ 6.11 · < 6.11.2
No data.
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (9)
- https://access.redhat.com/security/cve/CVE-2024-47733 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2320211 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-42651 Advisory
- https://git.kernel.org/stable/c/3c58a9575e02c2b90a3180007d57105ceaa7c246 Patch
- https://git.kernel.org/stable/c/603f95cefbee06a31b03137b777f03e3c2163d72 Patch
- https://git.kernel.org/stable/c/7a9eaf97d56625e55b31a7beb558e1ee185ca461 Patch
- https://lore.kernel.org/linux-cve-announce/2024102107-CVE-2024-47733-6591@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2024-47733
- https://www.cve.org/CVERecord?id=CVE-2024-47733
Change history (0)
No recorded changes yet.