cbcvebase.
CVE-2024-41042
published 2024-07-29

CVE-2024-41042: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: prefer nft_chain_validate nft_chain_validate already performs loop…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.32%
24.5th percentile
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: prefer nft_chain_validate nft_chain_validate already performs loop detection because a cycle will result in a call stack overflow (ctx->level >= NFT_JUMP_STACK_SIZE). It also follows maps via ->validate callback in nft_lookup, so there appears no reason to iterate the maps again. nf_tables_check_loops() and all its helper functions can be removed. This improves ruleset load time significantly, from 23s down to 12s. This also fixes a crash bug. Old loop detection code can result in unbounded recursion: BUG: TASK stack guard page was hit at .... Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN CPU: 4 PID: 1539 Comm: nft Not tainted 6.10.0-rc5+ #1 [..] with a suitable ruleset during validation of register stores. I can't see any actual reason to attempt to check for this from nft_validate_register_store(), at this point the transaction is still in progress, so we don't have a full picture of the rule graph. For nf-next it might make sense to either remove it or make this depend on table->validate_state in case we could catch an error earlier (for improved error reporting to userspace).

Affected

26 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.106-1 (bookworm)linux 6.1.106-1 (bookworm)
debianlinux-6.1< linux 6.1.106-1 (bookworm)linux 6.1.106-1 (bookworm)
linuxlinux
linuxlinux>= 20a69341f2d00cd042e81c82289fba8a13c05a25 < 1947e4c3346faa8ac7e343652c0fd3b3e394202f1947e4c3346faa8ac7e343652c0fd3b3e394202f
linuxlinux>= 20a69341f2d00cd042e81c82289fba8a13c05a25 < cd4348e0a50286282c314ad6d2b0740e7c812c24cd4348e0a50286282c314ad6d2b0740e7c812c24
linuxlinux>= 20a69341f2d00cd042e81c82289fba8a13c05a25 < 31c35f9f89ef585f1edb53e17ac73a0ca4a9712b31c35f9f89ef585f1edb53e17ac73a0ca4a9712b
linuxlinux>= 20a69341f2d00cd042e81c82289fba8a13c05a25 < 8246b7466c8da49d0d9e85e26cbd69dd6d3e3d1e8246b7466c8da49d0d9e85e26cbd69dd6d3e3d1e
linuxlinux>= 20a69341f2d00cd042e81c82289fba8a13c05a25 < b6b6e430470e1c3c5513311cb35a15a205595abeb6b6e430470e1c3c5513311cb35a15a205595abe
linuxlinux>= 20a69341f2d00cd042e81c82289fba8a13c05a25 < 717c91c6ed73e248de6a15bc53adefb81446c9d0717c91c6ed73e248de6a15bc53adefb81446c9d0
linuxlinux>= 20a69341f2d00cd042e81c82289fba8a13c05a25 < 9df785aeb7dcc8efd1d4110bb27d26005298ebae9df785aeb7dcc8efd1d4110bb27d26005298ebae
linuxlinux>= 20a69341f2d00cd042e81c82289fba8a13c05a25 < cff3bd012a9512ac5ed858d38e6ed65f6391008ccff3bd012a9512ac5ed858d38e6ed65f6391008c
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.226-15.10.226-1
linuxlinux_kernel>= 0 < 6.1.106-16.1.106-1
linuxlinux_kernel>= 0 < 6.9.10-16.9.10-1
linuxlinux_kernel>= 0 < 6.9.10-16.9.10-1
linuxlinux_kernel>= 0 < 5.4.0-200.2205.4.0-200.220
linuxlinux_kernel>= 0 < 5.15.0-125.1355.15.0-125.135
linuxlinux_kernel>= 0 < 6.8.0-48.486.8.0-48.48
linuxlinux_kernel>= 3.13 < 4.19.3204.19.320
linuxlinux_kernel>= 4.20 < 5.4.2825.4.282
linuxlinux_kernel>= 5.11 < 5.15.1655.15.165
linuxlinux_kernel>= 5.16 < 6.1.1056.1.105
linuxlinux_kernel>= 5.5 < 5.10.2245.10.224
linuxlinux_kernel>= 6.2 < 6.6.466.6.46

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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