CVE-2024-35890 Affecting kernel-core package, versions <0:5.14.0-284.62.1.el9_2
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Test your applications- Snyk ID SNYK-RHEL9-KERNELCORE-7578493
- published 5 Aug 2024
- disclosed 19 May 2024
Introduced: 19 May 2024
CVE-2024-35890 Open this link in a new tabHow to fix?
Upgrade RHEL:9 kernel-core to version 0:5.14.0-284.62.1.el9_2 or higher.
This issue was patched in RHSA-2024:1881.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by RHEL.
See How to fix? for RHEL: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.
References
- https://access.redhat.com/security/cve/CVE-2024-35890
- https://git.kernel.org/stable/c/2eeab8c47c3c0276e0746bc382f405c9a236a5ad
- https://git.kernel.org/stable/c/5b3b67f731296027cceb3efad881ae281213f86f
- https://git.kernel.org/stable/c/d225b0ac96dc40d7e8ae2bc227eb2c56e130975f
- https://git.kernel.org/stable/c/ed4cccef64c1d0d5b91e69f7a8a6697c3a865486
- https://git.kernel.org/stable/c/fc126c1d51e9552eacd2d717b9ffe9262a8a4cd6