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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-38441

netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto() syzbot found a potential access to uninit-value in nf_flow_pppoe_proto() Blamed commit forgot the Ethernet header. BUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27 nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27 nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline] nf_hook_slow+0xe1/0x3d0 net/netfilter/core.c:623 nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline] nf_ingress net/core/dev.c:5742 [inline] __netif_receive_skb_core+0x4aff/0x70c0 net/core/dev.c:5837 __netif_receive_skb_one_core net/core/dev.c:5975 [inline] __netif_receive_skb+0xcc/0xac0 net/core/dev.c:6090 netif_receive_skb_internal net/core/dev.c:6176 [inline] netif_receive_skb+0x57/0x630 net/core/dev.c:6235 tun_rx_batched+0x1df/0x980 drivers/net/tun.c:1485 tun_get_user+0x4ee0/0x6b40 drivers/net/tun.c:1938 tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1984 new_sync_write fs/read_write.c:593 [inline] vfs_write+0xb4b/0x1580 fs/read_write.c:686 ksys_write fs/read_write.c:738 [inline] __do_sys_write fs/read_write.c:749 [inline]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • d06977b9a4109f8738bb276125eb6a0b772bc433 to < a3aea97d55964e70a1e6426aa4cafdc036e8a2ddaffected
  • 8bf7c76a2a207ca2b4cfda0a279192adf27678d7 to < eed8960b289327235185b7c32649c3470a3e969baffected
  • a2471d271042ea18e8a6babc132a8716bb2f08b9 to < 9fbc49429a23b02595ba82536c5ea425fdabb221affected
  • 87b3593bed1868b2d9fe096c01bcdf0ea86cbebf to < e0dd2e9729660f3f4fcb16e0aef87342911528efaffected
  • 87b3593bed1868b2d9fe096c01bcdf0ea86cbebf to < cfbf0665969af2c69d10c377d4c3d306e717efb4affected
  • 87b3593bed1868b2d9fe096c01bcdf0ea86cbebf to < 18cdb3d982da8976b28d57691eb256ec5688fad2affected
  • cf366ee3bc1b7d1c76a882640ba3b3f8f1039163affected
  • 5.15.157 to < 5.15.189affected
  • 6.1.88 to < 6.1.146affected
  • 6.6.29 to < 6.6.99affected
  • 6.8.8 to < 6.9affected

Linux Linux

Default version status: affected

  • 6.9affected
  • 0 to < 6.9unaffected
  • 5.15.189 to ≤ 5.15.*unaffected
  • 6.1.146 to ≤ 6.1.*unaffected
  • 6.6.99 to ≤ 6.6.*unaffected
  • 6.12.39 to ≤ 6.12.*unaffected
  • 6.15.7 to ≤ 6.15.*unaffected
  • 6.16 to ≤ *unaffected

References