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CVE-2023-53055— fscrypt: destroy keyring after security_sb_delete()

EPSS 0.07% · P20
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I. Basic Information for CVE-2023-53055

Vulnerability Information
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Vulnerability Title
fscrypt: destroy keyring after security_sb_delete()
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于fscrypt_destroy_keyring在security_sb_delete之前调用，可能导致空指针解引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux e6f4fd85ef1ee6ab356bfbd64df28c1cb73aee7e ~ 992a3f3e8a0c92151dfdf65fc85567c865fd558a -
LinuxLinux 6.1 -

II. Public POCs for CVE-2023-53055

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III. Intelligence Information for CVE-2023-53055

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Same Patch Batch · Linux · 2025-05-02 · 107 CVEs total

CVE-2023-53102ice: xsk: disable txq irq before flushing hw
CVE-2023-53115scsi: mpi3mr: Fix memory leaks in mpi3mr_init_ioc()
CVE-2023-53114i40e: Fix kernel crash during reboot when adapter is in recovery mode
CVE-2023-53112drm/i915/sseu: fix max_subslices array-index-out-of-bounds access
CVE-2023-53113wifi: nl80211: fix NULL-ptr deref in offchan check
CVE-2023-53111loop: Fix use-after-free issues
CVE-2023-53109net: tunnels: annotate lockless accesses to dev->needed_headroom
CVE-2023-53110net/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler()
CVE-2023-53108net/iucv: Fix size of interrupt data
CVE-2023-53106nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition
CVE-2023-53107veth: Fix use after free in XDP_REDIRECT
CVE-2023-53105net/mlx5e: Fix cleanup null-ptr deref on encap lock
CVE-2023-53103bonding: restore bond's IFF_SLAVE flag if a non-eth dev enslave fails
CVE-2023-53101ext4: zero i_disksize when initializing the bootloader inode
CVE-2023-53091ext4: update s_journal_inum if it changes after journal replay
CVE-2023-53094tty: serial: fsl_lpuart: fix race on RX DMA shutdown
CVE-2023-53092interconnect: exynos: fix node leak in probe PM QoS error path
CVE-2023-53093tracing: Do not let histogram values have some modifiers
CVE-2023-53095drm/ttm: Fix a NULL pointer dereference
CVE-2023-53090drm/amdkfd: Fix an illegal memory access

Showing top 20 of 107 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53055

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