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ubuntucveUbuntu.comUB:CVE-2024-35890
HistoryMay 19, 2024 - 12:00 a.m.

CVE-2024-35890

2024-05-1900:00:00
ubuntu.com
ubuntu.com
2
linux kernel
vulnerability
cve-2024-35890
ownership transfer fix
packets
gro
fraglist
segmentation
skb_segment_list
socket
bug
rip
ipv6
netif_receive_skb_list_internal
napi_complete_done
gro_cell_poll
skb_gro_receive

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%

In the Linux kernel, the following vulnerability has been resolved: gro:
fix ownership transfer If packets are GROed with fraglist they might be
segmented later on and continue their journey in the stack. In
skb_segment_list those skbs can be reused as-is. This is an issue as their
destructor was removed in skb_gro_receive_list but not the reference to
their socket, and then they can’t be orphaned. Fix this by also removing
the reference to the socket. For example this could be observed, kernel BUG
at include/linux/skbuff.h:3131! (skb_orphan) RIP:
0010:ip6_rcv_core+0x11bc/0x19a0 Call Trace: ipv6_list_rcv+0x250/0x3f0
__netif_receive_skb_list_core+0x49d/0x8f0
netif_receive_skb_list_internal+0x634/0xd40 napi_complete_done+0x1d2/0x7d0
gro_cell_poll+0x118/0x1f0 A similar construction is found in
skb_gro_receive, apply the same change there.

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%

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