pds_core: fix debugfs_lookup dentry leak and error handling
Published Jul 19, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.13%
Description
debugfs_lookup() returns a dentry with an elevated reference count that must be released with dput(). The current code discards the returned dentry without calling dput(), causing a reference leak on every firmware reset recovery.
Additionally, when CONFIG_DEBUG_FS is disabled, debugfs_lookup() returns ERR_PTR(-ENODEV), not NULL. The current check passes for error pointers and would call dput() on an invalid pointer, causing a crash.
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 6.6.16StatusaffectedConstraints<6.6.142
- Version 6.7.4StatusaffectedConstraints<6.8
- Version
-
- Version 6.8StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<6.8
- Version 6.12.92StatusunaffectedConstraints<=6.12.*
- Version 6.18.34StatusunaffectedConstraints<=6.18.*
- Version 6.6.142StatusunaffectedConstraints<=6.6.*
- Version 7.0.11StatusunaffectedConstraints<=7.0.*
- Version 7.1StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
| ||||||||||||||||||||||||
| Linux | Linux | unaffected |
| ||||||||||||||||||||||||
| Linux | Linux | affected |
|
- ≥ 6.6.16 · < 6.6.142
- ≥ 6.7.4 · < 6.8
- ≥ 6.8.1 · < 6.12.92
- ≥ 6.13 · < 6.18.34
- ≥ 6.19 · < 7.0.11
- 6.8
- 6.8
- 6.8
- 6.8
- 6.8
- 6.8
- 7.1
- 7.1
- 7.1
- 7.1
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
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
Red Hat Hardened Images
erlang27
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| 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 |
| Red Hat Hardened Images | erlang27 | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (11)
- https://access.redhat.com/security/cve/CVE-2026-64147 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2502605 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-45832 Advisory
- https://git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0c Patch
- https://git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fd Patch
- https://git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2 Patch
- https://git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32 Patch
- https://git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9 Patch
- https://lore.kernel.org/linux-cve-announce/2026071930-CVE-2026-64147-ffb3@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-64147
- https://www.cve.org/CVERecord?id=CVE-2026-64147
Change history (0)
No recorded changes yet.