CVE-2026-68354High· 8.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: firewire: net: Fix fragmented datagram reassembly fwnet_frag_new() keeps a sorted list of received fragments for a partial datagram. When a new fragment is adjacent to…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.3%
Last analysed / modified upstream
0.3% → 0.3%
In the Linux kernel, the following vulnerability has been resolved:
firewire: net: Fix fragmented datagram reassembly
fwnet_frag_new() keeps a sorted list of received fragments for a partial datagram. When a new fragment is adjacent to an existing fragment, the code checks whether the new fragment also closes the gap to the next or previous list entry.
Those neighbor lookups currently assume that the current fragment always has a real next or previous fragment. At a list edge, the next or previous entry is the list head, not a struct fwnet_fragment_info.
The gap checks also compare against the old edge of the current fragment instead of the edge after adding the new fragment. As a result, a fragment that bridges two existing ranges may leave two adjacent ranges unmerged, so fwnet_pd_is_complete() can miss a complete datagram.
Check for the list head before looking up the neighboring fragment, and compare the neighbor against the new fragment's far edge when deciding whether to merge all three ranges.
This issue was found by a static analysis checker and confirmed by manual source review.
Linux >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 1aaf16031d65ccd4576451a79f7dabbec994c111Linux >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 0a219b2a01b4fe93706717e3bcacf7f62967b26fLinux >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 268cea3800eda5fa3ee04a49ee2973b8766a8df3Linux >= c76acec6d55107b652a37c90b36c00bc8b04dabb < b7d633c7c92321be98724b1d365e8ce507f2f349Linux >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 22e05b8ddbcf7d22c7f1598786e86635547e554dLinux >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 0177e578d7a885037b0fb82286c12e9d0360cc10Linux >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 2a5aa4e9b89227d1a1690fb8d5b81e5f3b261999Linux >= c76acec6d55107b652a37c90b36c00bc8b04dabb < d52a13adbb8ccbab99cd3bad36804e87d8b5c052Linux 2.6.31Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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