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CVE-2025-38107
published 2025-07-03

CVE-2025-38107: In the Linux kernel, the following vulnerability has been resolved: net_sched: ets: fix a race in ets_qdisc_change() Gerrard Tai reported a race condition in…

high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
In the Linux kernel, the following vulnerability has been resolved: net_sched: ets: fix a race in ets_qdisc_change() Gerrard Tai reported a race condition in ETS, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.

Affected

43 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.147-1 (bookworm)linux 6.1.147-1 (bookworm)
debianlinux-6.1< linux 6.1.147-1 (bookworm)linux 6.1.147-1 (bookworm)
linuxlinux
linuxlinux
linuxlinux
linuxlinux>= 5.10.142 < 5.10.2395.10.239
linuxlinux>= 5.15.66 < 5.15.1865.15.186
linuxlinux>= 5.19.8 < 5.205.20
linuxlinux>= 5.4.213 < 5.55.5
linuxlinux>= 699d82e9a6db29d509a71f1f2f4316231e6232e6 < eb7b74e9754e1ba2088f914ad1f57a778b11894beb7b74e9754e1ba2088f914ad1f57a778b11894b
linuxlinux>= b05972f01e7d30419987a1f221b5593668fd6448 < 347867cb424edae5fec1622712c8dd0a2c42918f347867cb424edae5fec1622712c8dd0a2c42918f
linuxlinux>= b05972f01e7d30419987a1f221b5593668fd6448 < 0383b25488a545be168744336847549d4a2d3d6c0383b25488a545be168744336847549d4a2d3d6c
linuxlinux>= b05972f01e7d30419987a1f221b5593668fd6448 < 073f64c03516bcfaf790f8edc772e0cfb8a84ec3073f64c03516bcfaf790f8edc772e0cfb8a84ec3
linuxlinux>= b05972f01e7d30419987a1f221b5593668fd6448 < fed94bd51d62d2e0e006aa61480e94e5cd0582b0fed94bd51d62d2e0e006aa61480e94e5cd0582b0
linuxlinux>= b05972f01e7d30419987a1f221b5593668fd6448 < d92adacdd8c2960be856e0b82acc5b7c5395fddbd92adacdd8c2960be856e0b82acc5b7c5395fddb
linuxlinux>= ce881ddbdc028fb1988b66e40e45ca0529c23b46 < 0b479d0aa488cb478eb2e1d8868be946ac8afb4f0b479d0aa488cb478eb2e1d8868be946ac8afb4f
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.244-15.10.244-1
linuxlinux_kernel>= 0 < 6.1.147-16.1.147-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 5.15.0-156.1665.15.0-156.166
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100

CVSS provenance

nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.0HIGH