vulnerability

Debian: CVE-2024-26834: linux -- security update

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:N)
Published
04/17/2024
Added
07/30/2024
Modified
04/04/2025

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nft_flow_offload: release dst in case direct xmit path is used

Direct xmit does not use it since it calls dev_queue_xmit() to send
packets, hence it calls dst_release().

kmemleak reports:

unreferenced object 0xffff88814f440900 (size 184):
comm "softirq", pid 0, jiffies 4294951896
hex dump (first 32 bytes):
00 60 5b 04 81 88 ff ff 00 e6 e8 82 ff ff ff ff .`[.............
21 0b 50 82 ff ff ff ff 00 00 00 00 00 00 00 00 !.P.............
backtrace (crc cb2bf5d6):
[] kmem_cache_alloc+0x286/0x340
[] dst_alloc+0x43/0xb0
[] rt_dst_alloc+0x2e/0x190
[] __mkroute_output+0x244/0x980
[] ip_route_output_flow+0xc0/0x160
[ [] nf_route+0x2d/0x60
[] nft_flow_route+0x171/0x6a0 [nft_flow_offload]
[] nft_flow_offload_eval+0x4e8/0x700 [nft_flow_offload]
[] expr_call_ops_eval+0x53/0x330 [nf_tables]
[] nft_do_chain+0x17c/0x840 [nf_tables]
[] nft_do_chain_inet+0xa1/0x210 [nf_tables]
[] nf_hook_slow+0x5b/0x160
[] ip_forward+0x8b6/0x9b0
[] ip_rcv+0x221/0x230
[] __netif_receive_skb_one_core+0xfe/0x110

Solution

debian-upgrade-linux
Title
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