cbcvebase.
CVE-2025-21638
published 2025-01-19

CVE-2025-21638: In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: auth_enable: avoid using current->nsproxy As mentioned in a previous commit…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
14.1th percentile
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.

Affected

37 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.128-1 (bookworm)linux 6.1.128-1 (bookworm)
debianlinux-6.1< linux 6.1.128-1 (bookworm)linux 6.1.128-1 (bookworm)
linuxlinux
linuxlinux
linuxlinux
linuxlinux
linuxlinux>= 3.10.41 < 3.113.11
linuxlinux>= 3.12.21 < 3.133.13
linuxlinux>= 3.14.5 < 3.153.15
linuxlinux>= b14878ccb7fac0242db82720b784ab62c467c0dc < cf387cdebfaebae228dfba162f94c567a67610c3cf387cdebfaebae228dfba162f94c567a67610c3
linuxlinux>= b14878ccb7fac0242db82720b784ab62c467c0dc < dc583e7e5f8515ca489c0df28e4362a70eade382dc583e7e5f8515ca489c0df28e4362a70eade382
linuxlinux>= b14878ccb7fac0242db82720b784ab62c467c0dc < bd2a2939423566c654545fa3e96a656662a0af9ebd2a2939423566c654545fa3e96a656662a0af9e
linuxlinux>= b14878ccb7fac0242db82720b784ab62c467c0dc < 1b67030d39f2b00f94ac1f0af11ba6657589e4d31b67030d39f2b00f94ac1f0af11ba6657589e4d3
linuxlinux>= b14878ccb7fac0242db82720b784ab62c467c0dc < 7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf67ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6
linuxlinux>= b14878ccb7fac0242db82720b784ab62c467c0dc < c184bc621e3cef03ac9ba81a50dda2dae6a21d36c184bc621e3cef03ac9ba81a50dda2dae6a21d36
linuxlinux>= b14878ccb7fac0242db82720b784ab62c467c0dc < 15649fd5415eda664ef35780c2013adeb5d9c69515649fd5415eda664ef35780c2013adeb5d9c695
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.128-16.1.128-1
linuxlinux_kernel>= 0 < 6.12.10-16.12.10-1

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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