CVE-2023-53224
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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 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: <TASK> ext4_exit_sysfs+0x14/0x60 [ext4] cleanup_module+0x67/0xedb [ext4]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| b99fee58a20ab8e0557cce87b6f187e325993142 | affected | git | 2b69cdd9f9a7f596e3dd31f05f9852940d177924 | Unavailable | None listed |
| b99fee58a20ab8e0557cce87b6f187e325993142 | affected | git | 99e3fd21f8fc975c95e8cf76fbf6a3d2656f8f71 | Unavailable | None listed |
| b99fee58a20ab8e0557cce87b6f187e325993142 | affected | git | 1ba10d3640e9783dad811fe4e24d55465c37c64d | Unavailable | None listed |
| b99fee58a20ab8e0557cce87b6f187e325993142 | affected | git | c98077f7598a562f51051eec043be0cb3e1b1b5e | Unavailable | None listed |
| b99fee58a20ab8e0557cce87b6f187e325993142 | affected | git | 0a1394e07c5d6bf1bfc25db8589ff1b1bfb6f46a | Unavailable | None listed |
| b99fee58a20ab8e0557cce87b6f187e325993142 | affected | git | 94d8de83286fb1827340eba35b61c308f6b46ead | Unavailable | None listed |
| b99fee58a20ab8e0557cce87b6f187e325993142 | affected | git | 118901ad1f25d2334255b3d50512fa20591531cd | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.16 | Unavailable | None listed |
| 4.19.274 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.233 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.170 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.96 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.14 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2.1 | unaffected | semver | Unavailable | 6.2.* | None listed |
| 6.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |