Answer in brief
CVE-2024-26834 records a High severity (CVSS 7.5) vulnerability in netfilter: nft_flow_offload: release dst in case direct xmit path is used. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7c71b831220edeab7ce603d818dc1708d9ea4137 <13b57b5cd591d5b22f9bbf047b2922967de411f3 || >=9c5662e95a8dcc232c3ef4deb21033badcd260f6 <a6cafdb49a7bbf4a88367db209703eee6941e023 || >=fa502c86566680ac62bc28ec883a069bf7a2aa5e <9256ab9232e35a16af9c30fa4e522e6d1bd3605a || >=fa502c86566680ac62bc28ec883a069bf7a2aa5e <2d17cf10179a7de6d8f0128168b84ad0b4a1863f || >=fa502c86566680ac62bc28ec883a069bf7a2aa5e <8762785f459be1cfe6fcf7285c123aad6a3703f0 | 13b57b5cd591d5b22f9bbf047b2922967de411f3, a6cafdb49a7bbf4a88367db209703eee6941e023, 9256ab9232e35a16af9c30fa4e522e6d1bd3605a, 2d17cf10179a7de6d8f0128168b84ad0b4a1863f, 8762785f459be1cfe6fcf7285c123aad6a3703f0 |
| Linux/Linuxgeneric | 6.5 | Not reported |
Published upstream
Apr 17, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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): [<000000003ee17107>] kmem_cache_alloc+0x286/0x340 [<0000000021a5de2c>] dst_alloc+0x43/0xb0 [<00000000f0671159>] rt_dst_alloc+0x2e/0x190 [<00000000fe5092c9>] __mkroute_output+0x244/0x980 [<000000005fb96fb0>] ip_route_output_flow+0xc0/0x160 [<0000000045367433>] nf_ip_route+0xf/0x30 [<0000000085da1d8e>] nf_route+0x2d/0x60 [<00000000d1ecd1cb>] nft_flow_route+0x171/0x6a0 [nft_flow_offload] [<00000000d9b2fb60>] nft_flow_offload_eval+0x4e8/0x700 [nft_flow_offload] [<000000009f447dbb>] expr_call_ops_eval+0x53/0x330 [nf_tables] [<00000000072e1be6>] nft_do_chain+0x17c/0x840 [nf_tables] [<00000000d0551029>] nft_do_chain_inet+0xa1/0x210 [nf_tables] [<0000000097c9d5c6>] nf_hook_slow+0x5b/0x160 [<0000000005eccab1>] ip_forward+0x8b6/0x9b0 [<00000000553a269b>] ip_rcv+0x221/0x230 [<00000000412872e5>] __netif_receive_skb_one_core+0xfe/0x110
Quoted source text, attributed separately from HOL analysis.