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CVE-2025-21638— sctp: sysctl: auth_enable: avoid using current->nsproxy

EPSS 0.03% · P8
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I. Basic Information for CVE-2025-21638

Vulnerability Information
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Vulnerability Title
sctp: sysctl: auth_enable: avoid using current->nsproxy
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: auth_enable: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acct(2). The 'net' structure can be obtained from the table->data using container_of(). Note that table->data could also be used directly, but that would increase the size of this fix, while 'sctp.ctl_sock' still needs to be retrieved from 'net' structure.
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，该漏洞源于空指针取消引用。
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 b14878ccb7fac0242db82720b784ab62c467c0dc ~ cf387cdebfaebae228dfba162f94c567a67610c3 -
LinuxLinux 3.15 -

II. Public POCs for CVE-2025-21638

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III. Intelligence Information for CVE-2025-21638

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Same Patch Batch · Linux · 2025-01-19 · 47 CVEs total

CVE-2024-57916misc: microchip: pci1xxxx: Resolve kernel panic during GPIO IRQ handling
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CVE-2024-57921drm/amdgpu: Add a lock when accessing the buddy trim function
CVE-2024-57925ksmbd: fix a missing return value check bug
CVE-2024-57926drm/mediatek: Set private->all_drm_private[i]->drm to NULL if mtk_drm_bind returns err
CVE-2024-57928netfs: Fix enomem handling in buffered reads
CVE-2024-57927nfs: Fix oops in nfs_netfs_init_request() when copying to cache
CVE-2024-57929dm array: fix releasing a faulty array block twice in dm_array_cursor_end
CVE-2024-57923btrfs: zlib: fix avail_in bytes for s390 zlib HW compression path
CVE-2024-57917topology: Keep the cpumask unchanged when printing cpumap
CVE-2024-57919drm/amd/display: fix divide error in DM plane scale calcs
CVE-2024-57914usb: typec: tcpci: fix NULL pointer issue on shared irq case
CVE-2024-57913usb: gadget: f_fs: Remove WARN_ON in functionfs_bind
CVE-2024-57912iio: pressure: zpa2326: fix information leak in triggered buffer
CVE-2024-57911iio: dummy: iio_simply_dummy_buffer: fix information leak in triggered buffer
CVE-2024-57910iio: light: vcnl4035: fix information leak in triggered buffer
CVE-2024-57908iio: imu: kmx61: fix information leak in triggered buffer
CVE-2024-57909iio: light: bh1745: fix information leak in triggered buffer
CVE-2024-57907iio: adc: rockchip_saradc: fix information leak in triggered buffer
CVE-2024-57905iio: adc: ti-ads1119: fix information leak in triggered buffer

Showing top 20 of 47 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21638

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