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.
Security readout for executives and security teams
Plain-English summary
A Linux kernel networking flaw can mishandle socket ownership when GRO fraglist packets are later segmented. The supplied record reports a possible kernel BUG and rates potential confidentiality, integrity, and availability impact as high. Exploitation requires local access with low privileges according to the CVSS vector; no active exploitation evidence is provided.
Executive priority
Treat this as a high-priority kernel maintenance issue, especially on shared Linux hosts or systems running untrusted workloads. Schedule vendor-approved updates promptly, but avoid declaring an emergency based solely on the score: the supplied evidence indicates local access is required and does not establish active exploitation.
Technical view
The GRO receive paths remove an skb destructor without also clearing its socket reference. Reused skbs therefore cannot be orphaned during later segmentation, potentially triggering a kernel BUG in skb_orphan. The upstream resolution removes the socket reference in both skb_gro_receive_list and the similar skb_gro_receive path.
Likely exposure
Exposure applies to Linux systems running affected kernel builds where GRO fraglist packet processing is reachable. The bundle lists affected 5.15, 5.15.154, 6.1.85, 6.6.26, 6.8.5, and 6.9 entries, but its version structure is ambiguous. Confirm status against the distribution or appliance vendor's exact build.
Exploitation context
The CVSS vector describes a local, low-complexity attack requiring low privileges and no user interaction, with high potential impact. The bundle marks this CVE as absent from KEV and provides no evidence of exploitation in the wild, public exploit availability, or reliable privilege escalation.
Researcher notes
The observable failure is a kernel BUG associated with stale skb socket ownership after GRO fraglist segmentation. The record supplies multiple stable-tree fixes but no CWE, exploit analysis, or demonstrated attack outcome. Package backports may make upstream version comparisons unreliable; validate using vendor build metadata and commit inclusion.
Mitigation direction
Upgrade to a vendor-supported kernel release containing the GRO ownership-transfer fix.
Check distribution or appliance advisories for the fixed package corresponding to the deployed kernel.
Prioritize multi-user systems where untrusted users or workloads have local access.
Use vendor-recommended mitigations if an immediate kernel update is unavailable.
Validation and detection
Record each system's exact kernel and vendor package version.
Confirm the vendor package changelog references CVE-2024-35890 or a listed stable fix commit.
Verify the updated kernel is running after installation and reboot.
Review kernel logs for matching skb_orphan BUG traces, while recognizing absence does not prove safety.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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cve · low confidence lookup
CVE-2024-35890 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.