CVE-2023-53055
fscrypt: destroy keyring after security_sb_delete()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved: fscrypt: destroy keyring after security_sb_delete() fscrypt_destroy_keyring() must be called after all potentially-encrypted
inodes were evicted; otherwise it cannot safely destroy the keyring.
Since inodes that are in-use by the Landlock LSM don't get evicted until
security_sb_delete(), this means that fscrypt_destroy_keyring() must be
called *after* security_sb_delete(). This fixes a WARN_ON followed by a NULL dereference, only possible if
Landlock was being used on encrypted files.
In the Linux kernel, the following vulnerability has been resolved: fscrypt: destroy keyring after security_sb_delete() fscrypt_destroy_keyring() must be called after all potentially-encrypted inodes were evicted; otherwise it cannot safely destroy the keyring. Since inodes that are in-use by the Landlock LSM don't get evicted until security_sb_delete(), this means that fscrypt_destroy_keyring() must be called *after* security_sb_delete(). This fixes a WARN_ON followed by a NULL dereference, only possible if Landlock was being used on encrypted files.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-05-02 CVE Reserved
- 2025-05-02 CVE Published
- 2025-05-02 CVE Updated
- ---------- EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/e6f4fd85ef1ee6ab356bfbd64df28c1cb73aee7e | Vuln. Introduced | |
| https://git.kernel.org/stable/c/d7e7b9af104c7b389a0c21eb26532511bce4b510 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/391cceee6d435e616f68631e68f5b32d480b1e67 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/68d15d6558a386f46d815a6ac39edecad713a1bf | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15.78 < 5.15.105 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15.78 < 5.15.105" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.1 < 6.1.22 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.1 < 6.1.22" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.1 < 6.2.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.1 < 6.2.9" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.1 < 6.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.1 < 6.3" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.10.154 Search vendor "Linux" for product "Linux Kernel" and version "5.10.154" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 6.0.8 Search vendor "Linux" for product "Linux Kernel" and version "6.0.8" | en |
Affected
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