CVE-2023-53391
published 2025-09-18CVE-2023-53391: In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-based tmpfs…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.14%
3.4th percentile
In the Linux kernel, the following vulnerability has been resolved:
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
As the ramfs-based tmpfs uses ramfs_init_fs_context() for the
init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb()
to free it and avoid a memory leak.
Affected
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.52-1 (bookworm) | linux 6.1.52-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= c3b1b1cbf002e65a3cabd479e68b5f35886a26db < 5fada375113767b3b57f1b04f7a4fe64ffaa626f | 5fada375113767b3b57f1b04f7a4fe64ffaa626f |
| linux | linux | >= c3b1b1cbf002e65a3cabd479e68b5f35886a26db < 487f229efea80c00dd7397547ec4f25fb8999d99 | 487f229efea80c00dd7397547ec4f25fb8999d99 |
| linux | linux | >= c3b1b1cbf002e65a3cabd479e68b5f35886a26db < 1f34bf8b442c6d720e7fa6f15e8702427e48aea9 | 1f34bf8b442c6d720e7fa6f15e8702427e48aea9 |
| linux | linux | >= c3b1b1cbf002e65a3cabd479e68b5f35886a26db < ebe07db840992a3886694ac3d303b06f4b70ce00 | ebe07db840992a3886694ac3d303b06f4b70ce00 |
| linux | linux | >= c3b1b1cbf002e65a3cabd479e68b5f35886a26db < 36ce9d76b0a93bae799e27e4f5ac35478c676592 | 36ce9d76b0a93bae799e27e4f5ac35478c676592 |
| linux | linux_kernel | >= 0 < 5.10.191-1 | 5.10.191-1 |
| linux | linux_kernel | >= 0 < 6.1.52-1 | 6.1.52-1 |
| linux | linux_kernel | >= 0 < 6.4.4-1 | 6.4.4-1 |
| linux | linux_kernel | >= 0 < 6.4.4-1 | 6.4.4-1 |
| linux | linux_kernel | >= 2.6.30 < 5.10.188 | 5.10.188 |
| linux | linux_kernel | >= 5.11 < 5.15.121 | 5.15.121 |
| linux | linux_kernel | >= 5.16 < 6.1.39 | 6.1.39 |
| linux | linux_kernel | >= 6.2 < 6.4.4 | 6.4.4 |
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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Red Hat
kernel: Linux kernel: Memory leak in shmem's ramfs-based tmpfs leads to denial of service
vendor_redhat·2025-09-18·CVSS 5.5
CVE-2023-53391 [MEDIUM] CWE-772 kernel: Linux kernel: Memory leak in shmem's ramfs-based tmpfs leads to denial of service
kernel: Linux kernel: Memory leak in shmem's ramfs-based tmpfs leads to denial of service
In the Linux kernel, the following vulnerability has been resolved:
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
As the ramfs-based tmpfs uses ramfs_init_fs_context() for the
init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb()
to free it and avoid a memory leak.
A flaw was found in the Linux kernel's shared memory (shmem) component, specifically within its ramfs-based temporary file system (tmpfs) implementation. A local user could exploit this vulnerability due to improper memory deallocation. This oversight can lead to a memory leak, potentially causing a Denial of Service (DoS) by exhausting system resources.
Package: kernel (Red Hat Enterprise Linux
Debian
CVE-2023-53391: linux - In the Linux kernel, the following vulnerability has been resolved: shmem: use ...
vendor_debian·2023·CVSS 5.5
CVE-2023-53391 [MEDIUM] CVE-2023-53391: linux - In the Linux kernel, the following vulnerability has been resolved: shmem: use ...
In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-based tmpfs uses ramfs_init_fs_context() for the init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb() to free it and avoid a memory leak.
Scope: local
bookworm: resolved (fixed in 6.1.52-1)
bullseye: resolved (fixed in 5.10.191-1)
forky: resolved (fixed in 6.4.4-1)
sid: resolved (fixed in 6.4.4-1)
trixie: resolved (fixed in 6.4.4-1)
OSV
CVE-2023-53391: In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-ba
osv·2025-09-18·CVSS 5.5
CVE-2023-53391 [MEDIUM] CVE-2023-53391: In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-ba
In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-based tmpfs uses ramfs_init_fs_context() for the init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb() to free it and avoid a memory leak.
GHSA
GHSA-mxch-j2wj-hmc8: In the Linux kernel, the following vulnerability has been resolved:
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
As the ramfs-
ghsa_unreviewed·2025-09-18
CVE-2023-53391 [MEDIUM] GHSA-mxch-j2wj-hmc8: In the Linux kernel, the following vulnerability has been resolved:
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
As the ramfs-
In the Linux kernel, the following vulnerability has been resolved:
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
As the ramfs-based tmpfs uses ramfs_init_fs_context() for the
init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb()
to free it and avoid a memory leak.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/1f34bf8b442c6d720e7fa6f15e8702427e48aea9https://git.kernel.org/stable/c/36ce9d76b0a93bae799e27e4f5ac35478c676592https://git.kernel.org/stable/c/487f229efea80c00dd7397547ec4f25fb8999d99https://git.kernel.org/stable/c/5fada375113767b3b57f1b04f7a4fe64ffaa626fhttps://git.kernel.org/stable/c/ebe07db840992a3886694ac3d303b06f4b70ce00
2025-09-18
Published