CVE-2023-53377
published 2025-09-18CVE-2023-53377: In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we have a…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.14%
3.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
cifs: prevent use-after-free by freeing the cfile later
In smb2_compound_op we have a possible use-after-free
which can cause hard to debug problems later on.
This was revealed during stress testing with KASAN enabled
kernel. Fixing it by moving the cfile free call to
a few lines below, after the usage.
Affected
14 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 | — | — |
| linux | linux | >= 6.0.16 < 6.1 | 6.1 |
| linux | linux | >= 76894f3e2f71177747b8b4763fb180e800279585 < 4fe07d55a5461e66a55fbefb57f85ff0facea32b | 4fe07d55a5461e66a55fbefb57f85ff0facea32b |
| linux | linux | >= 76894f3e2f71177747b8b4763fb180e800279585 < b6353518ef8180816e863aa23b06456f395404d6 | b6353518ef8180816e863aa23b06456f395404d6 |
| linux | linux | >= 76894f3e2f71177747b8b4763fb180e800279585 < d017880782cf71f8820ee4a2002843893176501d | d017880782cf71f8820ee4a2002843893176501d |
| linux | linux | >= 76894f3e2f71177747b8b4763fb180e800279585 < 33f736187d08f6bc822117629f263b97d3df4165 | 33f736187d08f6bc822117629f263b97d3df4165 |
| 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 | >= 6.0.16 < 6.1.39 | 6.1.39 |
| linux | linux_kernel | >= 6.2 < 6.3.13 | 6.3.13 |
| linux | linux_kernel | >= 6.4 < 6.4.4 | 6.4.4 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
kernel: cifs: prevent use-after-free by freeing the cfile later
vendor_redhat·2025-09-18·CVSS 7.8
CVE-2023-53377 [HIGH] CWE-416 kernel: cifs: prevent use-after-free by freeing the cfile later
kernel: cifs: prevent use-after-free by freeing the cfile later
In the Linux kernel, the following vulnerability has been resolved:
cifs: prevent use-after-free by freeing the cfile later
In smb2_compound_op we have a possible use-after-free
which can cause hard to debug problems later on.
This was revealed during stress testing with KASAN enabled
kernel. Fixing it by moving the cfile free call to
a few lines below, after the usage.
Statement: A use-after-free in the Linux CIFS client (smb2_compound_op) could be triggered when handling SMB2 compound operations (notably around symlink handling), leading to kernel memory corruption on the client. The bug is remotely reachable only if a client accesses a malicious or misbehaving SMB server and performs the affected operations.
For the Red H
Debian
CVE-2023-53377: linux - In the Linux kernel, the following vulnerability has been resolved: cifs: preve...
vendor_debian·2023·CVSS 7.8
CVE-2023-53377 [HIGH] CVE-2023-53377: linux - In the Linux kernel, the following vulnerability has been resolved: cifs: preve...
In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we have a possible use-after-free which can cause hard to debug problems later on. This was revealed during stress testing with KASAN enabled kernel. Fixing it by moving the cfile free call to a few lines below, after the usage.
Scope: local
bookworm: resolved (fixed in 6.1.52-1)
bullseye: resolved
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-2023-53377: In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we hav
osv·2025-09-18·CVSS 7.8
CVE-2023-53377 [HIGH] CVE-2023-53377: In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we hav
In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we have a possible use-after-free which can cause hard to debug problems later on. This was revealed during stress testing with KASAN enabled kernel. Fixing it by moving the cfile free call to a few lines below, after the usage.
GHSA
GHSA-2h3h-p2mp-rw5q: In the Linux kernel, the following vulnerability has been resolved:
cifs: prevent use-after-free by freeing the cfile later
In smb2_compound_op we h
ghsa_unreviewed·2025-09-18
CVE-2023-53377 [HIGH] CWE-416 GHSA-2h3h-p2mp-rw5q: In the Linux kernel, the following vulnerability has been resolved:
cifs: prevent use-after-free by freeing the cfile later
In smb2_compound_op we h
In the Linux kernel, the following vulnerability has been resolved:
cifs: prevent use-after-free by freeing the cfile later
In smb2_compound_op we have a possible use-after-free
which can cause hard to debug problems later on.
This was revealed during stress testing with KASAN enabled
kernel. Fixing it by moving the cfile free call to
a few lines below, after the usage.
No detection rules found.
No public exploits indexed.
2025-09-18
Published