CVE-2026-63926High· 8.4▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: bpf: sockmap: fix tail fragment offset in bpf_msg_push_data When bpf_msg_push_data() inserts data in the middle of a scatterlist entry, it splits the original entry in…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 46.2 · likelihood 0 · 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.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
bpf: sockmap: fix tail fragment offset in bpf_msg_push_data
When bpf_msg_push_data() inserts data in the middle of a scatterlist entry, it splits the original entry into a left fragment and a right fragment.
The right fragment offset is page-local, but the code advances it with
start, which is the message-global insertion point. For inserts into a
non-first SG entry, this over-advances the offset and leaves the split
layout inconsistent.
Advance the right fragment offset by the fragment-local delta,
start - offset, which matches the length removed from the front of the
original entry.
Linux >= 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 < f14609d8146707452e0822f3c8154674ce677251Linux >= 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 < d81b323af2dcee47573907ccb89c0df9b45cb2e2Linux >= 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 < aeb95146848d12206e1b2cfacd4f40e21ce81d94Linux >= 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 < 96b72672ce849a1402730238e64d9b20bf06a96dLinux >= 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 < 3075c21d2d76c0067f4a382765b43d6cc10470f1Linux >= 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 < 5e19028667963fb371ebb00cecc2a473ef92056bLinux >= 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 < 63f64a510c7917658ddf4d073ece73914ee25346Linux >= 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 < f72eed9b84fb771019a955908132410a9ba9ea3fLinux 4.20Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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