cbcvebase.
CVE-2025-21639
published 2025-01-19

CVE-2025-21639: In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: rto_min/max: avoid using current->nsproxy As mentioned in a previous commit…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
13.1th percentile
In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: rto_min/max: 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, as this is the only member needed from the 'net' structure, but that would increase the size of this fix, to use '*data' everywhere 'net->sctp.rto_min/max' is used.

Affected

21 ranges
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>= 4f3fdf3bc59cafd14c3bc2c2369efad34c7aa8b5 < c8d179f3b1c1d60bf4484f50aa67b4c70f91bff9c8d179f3b1c1d60bf4484f50aa67b4c70f91bff9
linuxlinux>= 4f3fdf3bc59cafd14c3bc2c2369efad34c7aa8b5 < 246428bfb9e7db15c5cd08e1d0eca41b65af2b06246428bfb9e7db15c5cd08e1d0eca41b65af2b06
linuxlinux>= 4f3fdf3bc59cafd14c3bc2c2369efad34c7aa8b5 < 0f78f09466744589e420935e646ae78212a382900f78f09466744589e420935e646ae78212a38290
linuxlinux>= 4f3fdf3bc59cafd14c3bc2c2369efad34c7aa8b5 < 4059507e34aa5fe0fa9fd5b2b5f0c8b26ab2d4824059507e34aa5fe0fa9fd5b2b5f0c8b26ab2d482
linuxlinux>= 4f3fdf3bc59cafd14c3bc2c2369efad34c7aa8b5 < dc9d0e3cfd16f66fbf0862857c6b391c8613ca9fdc9d0e3cfd16f66fbf0862857c6b391c8613ca9f
linuxlinux>= 4f3fdf3bc59cafd14c3bc2c2369efad34c7aa8b5 < c87f1f6ade56c711f8736901e330685b453e420ec87f1f6ade56c711f8736901e330685b453e420e
linuxlinux>= 4f3fdf3bc59cafd14c3bc2c2369efad34c7aa8b5 < 9fc17b76fc70763780aa78b38fcf4742384044a59fc17b76fc70763780aa78b38fcf4742384044a5
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
linuxlinux_kernel>= 0 < 6.12.10-16.12.10-1
linuxlinux_kernel>= 0 < 5.4.0-211.2315.4.0-211.231
linuxlinux_kernel>= 0 < 5.15.0-135.1465.15.0-135.146
linuxlinux_kernel>= 0 < 6.8.0-60.636.8.0-60.63
linuxlinux_kernel>= 3.13 < 6.1.1256.1.125
linuxlinux_kernel>= 6.2 < 6.6.726.6.72
linuxlinux_kernel>= 6.7 < 6.12.106.12.10

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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