CVE-2024-26907

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

RDMA/mlx5: Fix fortify source warning while accessing Eth segment

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memcpy: detected field-spanning write (size 56) of single field "eseg->inline_hdr.start" at /var/lib/dkms/mlnx-ofed-kernel/5.8/build/drivers/infiniband/hw/mlx5/wr.c:131 (size 2)

WARNING: CPU: 0 PID: 293779 at /var/lib/dkms/mlnx-ofed-kernel/5.8/build/drivers/infiniband/hw/mlx5/wr.c:131 mlx5_ib_post_send+0x191b/0x1a60 [mlx5_ib]

Modules linked in: 8021q garp mrp stp llc rdma_ucm(OE) rdma_cm(OE) iw_cm(OE) ib_ipoib(OE) ib_cm(OE) ib_umad(OE) mlx5_ib(OE) ib_uverbs(OE) ib_core(OE) mlx5_core(OE) pci_hyperv_intf mlxdevm(OE) mlx_compat(OE) tls mlxfw(OE) psample nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables libcrc32c nfnetlink mst_pciconf(OE) knem(OE) vfio_pci vfio_pci_core vfio_iommu_type1 vfio iommufd irqbypass cuse nfsv3 nfs fscache netfs xfrm_user xfrm_algo ipmi_devintf ipmi_msghandler binfmt_misc crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 snd_pcsp aesni_intel crypto_simd cryptd snd_pcm snd_timer joydev snd soundcore input_leds serio_raw evbug nfsd auth_rpcgss nfs_acl lockd grace sch_fq_codel sunrpc drm efi_pstore ip_tables x_tables autofs4 psmouse virtio_net net_failover failover floppy

[last unloaded: mlx_compat(OE)]

CPU: 0 PID: 293779 Comm: ssh Tainted: G OE 6.2.0-32-generic #32~22.04.1-Ubuntu

Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011

RIP: 0010:mlx5_ib_post_send+0x191b/0x1a60 [mlx5_ib]

Code: 0c 01 00 a8 01 75 25 48 8b 75 a0 b9 02 00 00 00 48 c7 c2 10 5b fd c0 48 c7 c7 80 5b fd c0 c6 05 57 0c 03 00 01 e8 95 4d 93 da <0f> 0b 44 8b 4d b0 4c 8b 45 c8 48 8b 4d c0 e9 49 fb ff ff 41 0f b7

RSP: 0018:ffffb5b48478b570 EFLAGS: 00010046

RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000

RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000

RBP: ffffb5b48478b628 R08: 0000000000000000 R09: 0000000000000000

R10: 0000000000000000 R11: 0000000000000000 R12: ffffb5b48478b5e8

R13: ffff963a3c609b5e R14: ffff9639c3fbd800 R15: ffffb5b480475a80

FS: 00007fc03b444c80(0000) GS:ffff963a3dc00000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000556f46bdf000 CR3: 0000000006ac6003 CR4: 00000000003706f0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Call Trace:

<TASK>

? show_regs+0x72/0x90

? mlx5_ib_post_send+0x191b/0x1a60 [mlx5_ib]

? __warn+0x8d/0x160

? mlx5_ib_post_send+0x191b/0x1a60 [mlx5_ib]

? report_bug+0x1bb/0x1d0

? handle_bug+0x46/0x90

? exc_invalid_op+0x19/0x80

? asm_exc_invalid_op+0x1b/0x20

? mlx5_ib_post_send+0x191b/0x1a60 [mlx5_ib]

mlx5_ib_post_send_nodrain+0xb/0x20 [mlx5_ib]

ipoib_send+0x2ec/0x770 [ib_ipoib]

ipoib_start_xmit+0x5a0/0x770 [ib_ipoib]

dev_hard_start_xmit+0x8e/0x1e0

? validate_xmit_skb_list+0x4d/0x80

sch_direct_xmit+0x116/0x3a0

__dev_xmit_skb+0x1fd/0x580

__dev_queue_xmit+0x284/0x6b0

? _raw_spin_unlock_irq+0xe/0x50

? __flush_work.isra.0+0x20d/0x370

? push_pseudo_header+0x17/0x40 [ib_ipoib]

neigh_connected_output+0xcd/0x110

ip_finish_output2+0x179/0x480

? __smp_call_single_queue+0x61/0xa0

__ip_finish_output+0xc3/0x190

ip_finish_output+0x2e/0xf0

ip_output+0x78/0x110

? __pfx_ip_finish_output+0x10/0x10

ip_local_out+0x64/0x70

__ip_queue_xmit+0x18a/0x460

ip_queue_xmit+0x15/0x30

__tcp_transmit_skb+0x914/0x9c0

tcp_write_xmit+0x334/0x8d0

tcp_push_one+0x3c/0x60

tcp_sendmsg_locked+0x2e1/0xac0

tcp_sendmsg+0x2d/0x50

inet_sendmsg+0x43/0x90

sock_sendmsg+0x68/0x80

sock_write_iter+0x93/0x100

vfs_write+0x326/0x3c0

ksys_write+0xbd/0xf0

? do_syscall_64+0x69/0x90

__x64_sys_write+0x19/0x30

do_syscall_

---truncated---