CVE-2023-53224
published 2025-09-15CVE-2023-53224: In the Linux kernel, the following vulnerability has been resolved: ext4: Fix function prototype mismatch for ext4_feat_ktype With clang's kernel control flow…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.15%
4.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
ext4: Fix function prototype mismatch for ext4_feat_ktype
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed.
ext4_feat_ktype was setting the "release" handler to "kfree", which
doesn't have a matching function prototype. Add a simple wrapper
with the correct prototype.
This was found as a result of Clang's new -Wcast-function-type-strict
flag, which is more sensitive than the simpler -Wcast-function-type,
which only checks for type width mismatches.
Note that this code is only reached when ext4 is a loadable module and
it is being unloaded:
CFI failure at kobject_put+0xbb/0x1b0 (target: kfree+0x0/0x180; expected type: 0x7c4aa698)
...
RIP: 0010:kobject_put+0xbb/0x1b0
...
Call Trace:
ext4_exit_sysfs+0x14/0x60 [ext4]
cleanup_module+0x67/0xedb [ext4]
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.15-1 (bookworm) | linux 6.1.15-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= b99fee58a20ab8e0557cce87b6f187e325993142 < 2b69cdd9f9a7f596e3dd31f05f9852940d177924 | 2b69cdd9f9a7f596e3dd31f05f9852940d177924 |
| linux | linux | >= b99fee58a20ab8e0557cce87b6f187e325993142 < 99e3fd21f8fc975c95e8cf76fbf6a3d2656f8f71 | 99e3fd21f8fc975c95e8cf76fbf6a3d2656f8f71 |
| linux | linux | >= b99fee58a20ab8e0557cce87b6f187e325993142 < 1ba10d3640e9783dad811fe4e24d55465c37c64d | 1ba10d3640e9783dad811fe4e24d55465c37c64d |
| linux | linux | >= b99fee58a20ab8e0557cce87b6f187e325993142 < c98077f7598a562f51051eec043be0cb3e1b1b5e | c98077f7598a562f51051eec043be0cb3e1b1b5e |
| linux | linux | >= b99fee58a20ab8e0557cce87b6f187e325993142 < 0a1394e07c5d6bf1bfc25db8589ff1b1bfb6f46a | 0a1394e07c5d6bf1bfc25db8589ff1b1bfb6f46a |
| linux | linux | >= b99fee58a20ab8e0557cce87b6f187e325993142 < 94d8de83286fb1827340eba35b61c308f6b46ead | 94d8de83286fb1827340eba35b61c308f6b46ead |
| linux | linux | >= b99fee58a20ab8e0557cce87b6f187e325993142 < 118901ad1f25d2334255b3d50512fa20591531cd | 118901ad1f25d2334255b3d50512fa20591531cd |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.15-1 | 6.1.15-1 |
| linux | linux_kernel | >= 0 < 6.1.15-1 | 6.1.15-1 |
| linux | linux_kernel | >= 0 < 6.1.15-1 | 6.1.15-1 |
| linux | linux_kernel | >= 4.16 < 4.19.274 | 4.19.274 |
| linux | linux_kernel | >= 4.20 < 5.4.233 | 5.4.233 |
| linux | linux_kernel | >= 5.11 < 5.15.96 | 5.15.96 |
| linux | linux_kernel | >= 5.16 < 6.1.14 | 6.1.14 |
| linux | linux_kernel | >= 5.5 < 5.10.170 | 5.10.170 |
| linux | linux_kernel | >= 6.2 < 6.2.1 | 6.2.1 |
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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OSV
CVE-2023-53224: In the Linux kernel, the following vulnerability has been resolved: ext4: Fix function prototype mismatch for ext4_feat_ktype With clang's kernel cont
osv·2025-09-15·CVSS 5.5
CVE-2023-53224 [MEDIUM] CVE-2023-53224: In the Linux kernel, the following vulnerability has been resolved: ext4: Fix function prototype mismatch for ext4_feat_ktype With clang's kernel cont
In the Linux kernel, the following vulnerability has been resolved: ext4: Fix function prototype mismatch for ext4_feat_ktype With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. ext4_feat_ktype was setting the "release" handler to "kfree", which doesn't have a matching function prototype. Add a simple wrapper with the correct prototype. This was found as a result of Clang's new -Wcast-function-type-strict flag, which is more sensitive than the simpler -Wcast-function-type, which only checks for type
GHSA
GHSA-9x2c-7hh8-w98c: In the Linux kernel, the following vulnerability has been resolved:
ext4: Fix function prototype mismatch for ext4_feat_ktype
With clang's kernel co
ghsa_unreviewed·2025-09-15
CVE-2023-53224 [MEDIUM] CWE-401 GHSA-9x2c-7hh8-w98c: In the Linux kernel, the following vulnerability has been resolved:
ext4: Fix function prototype mismatch for ext4_feat_ktype
With clang's kernel co
In the Linux kernel, the following vulnerability has been resolved:
ext4: Fix function prototype mismatch for ext4_feat_ktype
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed.
ext4_feat_ktype was setting the "release" handler to "kfree", which
doesn't have a matching function prototype. Add a simple wrapper
with the correct prototype.
This was found as a result of Clang's new -Wcast-function-type-strict
flag, which is more sensitive than the simpler -Wcast-function-type,
which only checks for t
Red Hat
kernel: ext4: Fix function prototype mismatch for ext4_feat_ktype
vendor_redhat·2025-09-15·CVSS 5.5
CVE-2023-53224 [MEDIUM] CWE-628 kernel: ext4: Fix function prototype mismatch for ext4_feat_ktype
kernel: ext4: Fix function prototype mismatch for ext4_feat_ktype
In the Linux kernel, the following vulnerability has been resolved:
ext4: Fix function prototype mismatch for ext4_feat_ktype
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed.
ext4_feat_ktype was setting the "release" handler to "kfree", which
doesn't have a matching function prototype. Add a simple wrapper
with the correct prototype.
This was found as a result of Clang's new -Wcast-function-type-strict
flag, which is more sensitive
Debian
CVE-2023-53224: linux - In the Linux kernel, the following vulnerability has been resolved: ext4: Fix f...
vendor_debian·2023·CVSS 5.5
CVE-2023-53224 [MEDIUM] CVE-2023-53224: linux - In the Linux kernel, the following vulnerability has been resolved: ext4: Fix f...
In the Linux kernel, the following vulnerability has been resolved: ext4: Fix function prototype mismatch for ext4_feat_ktype With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. ext4_feat_ktype was setting the "release" handler to "kfree", which doesn't have a matching function prototype. Add a simple wrapper with the correct prototype. This was found as a result of Clang's new -Wcast-function-type-strict flag, which is more sensitive than the simpler -Wcast-function-type, which only checks for type
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0a1394e07c5d6bf1bfc25db8589ff1b1bfb6f46ahttps://git.kernel.org/stable/c/118901ad1f25d2334255b3d50512fa20591531cdhttps://git.kernel.org/stable/c/1ba10d3640e9783dad811fe4e24d55465c37c64dhttps://git.kernel.org/stable/c/2b69cdd9f9a7f596e3dd31f05f9852940d177924https://git.kernel.org/stable/c/94d8de83286fb1827340eba35b61c308f6b46eadhttps://git.kernel.org/stable/c/99e3fd21f8fc975c95e8cf76fbf6a3d2656f8f71https://git.kernel.org/stable/c/c98077f7598a562f51051eec043be0cb3e1b1b5e
2025-09-15
Published