CVE-2024-35890 Affecting kernel-rt-modules package, versions <0:5.14.0-427.18.1.el9_4


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ALMALINUX9-KERNELRTMODULES-8326968
  • published4 Nov 2024
  • disclosed23 May 2024

Introduced: 23 May 2024

CVE-2024-35890  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 kernel-rt-modules to version 0:5.14.0-427.18.1.el9_4 or higher.
This issue was patched in ALSA-2024:3306.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules package and not the kernel-rt-modules package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

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.

CVSS Scores

version 3.1