CVE-2023-53402
published 2025-09-18CVE-2023-53402: In the Linux kernel, the following vulnerability has been resolved: kernel/printk/index.c: fix memory leak with using debugfs_lookup() When calling…
PriorityP417medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.14%
3.4th percentile
In the Linux kernel, the following vulnerability has been resolved:
kernel/printk/index.c: fix memory leak with using debugfs_lookup()
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.20-1 (bookworm) | linux 6.1.20-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 337015573718b161891a3473d25f59273f2e626b < 2e07fa2e30d48d24a791483774a3d4b76769e0cf | 2e07fa2e30d48d24a791483774a3d4b76769e0cf |
| linux | linux | >= 337015573718b161891a3473d25f59273f2e626b < c578a68ffcdc2e8c72556bebdaae2b7500398e81 | c578a68ffcdc2e8c72556bebdaae2b7500398e81 |
| linux | linux | >= 337015573718b161891a3473d25f59273f2e626b < 13969236b6900b5a3625ad2193569588e978f1cc | 13969236b6900b5a3625ad2193569588e978f1cc |
| linux | linux | >= 337015573718b161891a3473d25f59273f2e626b < 55bf243c514553e907efcf2bda92ba090eca8c64 | 55bf243c514553e907efcf2bda92ba090eca8c64 |
| linux | linux_kernel | < 5.15.100 | 5.15.100 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 5.16 < 6.1.18 | 6.1.18 |
| linux | linux_kernel | >= 6.2 < 6.2.5 | 6.2.5 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-cm93-2632-9m2q: In the Linux kernel, the following vulnerability has been resolved:
kernel/printk/index
ghsa_unreviewed·2025-09-18
CVE-2023-53402 [MEDIUM] CWE-401 GHSA-cm93-2632-9m2q: In the Linux kernel, the following vulnerability has been resolved:
kernel/printk/index
In the Linux kernel, the following vulnerability has been resolved:
kernel/printk/index.c: fix memory leak with using debugfs_lookup()
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.
OSV
CVE-2023-53402: In the Linux kernel, the following vulnerability has been resolved: kernel/printk/index
osv·2025-09-18·CVSS 5.5
CVE-2023-53402 [MEDIUM] CVE-2023-53402: In the Linux kernel, the following vulnerability has been resolved: kernel/printk/index
In the Linux kernel, the following vulnerability has been resolved: kernel/printk/index.c: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.
Red Hat
kernel: kernel/printk/index.c: fix memory leak with using debugfs_lookup()
vendor_redhat·2025-09-18·CVSS 5.5
CVE-2023-53402 [MEDIUM] CWE-772 kernel: kernel/printk/index.c: fix memory leak with using debugfs_lookup()
kernel: kernel/printk/index.c: fix memory leak with using debugfs_lookup()
In the Linux kernel, the following vulnerability has been resolved:
kernel/printk/index.c: fix memory leak with using debugfs_lookup()
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not a
Debian
CVE-2023-53402: linux - In the Linux kernel, the following vulnerability has been resolved: kernel/prin...
vendor_debian·2023·CVSS 5.5
CVE-2023-53402 [MEDIUM] CVE-2023-53402: linux - In the Linux kernel, the following vulnerability has been resolved: kernel/prin...
In the Linux kernel, the following vulnerability has been resolved: kernel/printk/index.c: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.
Scope: local
bookworm: resolved (fixed in 6.1.20-1)
bullseye: resolved
forky: resolved (fixed in 6.1.20-1)
sid: resolved (fixed in 6.1.20-1)
trixie: resolved (fixed in 6.1.20-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-09-18
Published