CVE-2026-74290None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: net/sched: cls_flow: Dont expose folded kernel pointers The flow classifier falls back to addr_fold() for fields that are missing from packet headers. In map mode, use…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · 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.
Exploit-prediction probability, daily snapshots since Nov 6.
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:
net/sched: cls_flow: Dont expose folded kernel pointers
The flow classifier falls back to addr_fold() for fields that are missing from packet headers. In map mode, userspace controls mask, xor, rshift, addend and divisor, and can observe the resulting classid through class statistics. This allows a tc classifier in a user/network namespace to recover the 32-bit folded value of skb->sk, skb_dst() or skb_nfct().
Align with standard kernel practices for pointer hashing and replace the XOR folding with a keyed siphash (which is cryptographically secure)
Linux >= e5dfb815181fcb186d6080ac3a091eadff2d98fe < 19f2ecf8ea564562c7e7a919cf38068dd9aa1c96Linux >= e5dfb815181fcb186d6080ac3a091eadff2d98fe < 3d054001860270748405a3f9270c5fa0bf7ffc19Linux >= e5dfb815181fcb186d6080ac3a091eadff2d98fe < fb31fbe51c233f3bf47021121f63d2e42cac2d08Linux >= e5dfb815181fcb186d6080ac3a091eadff2d98fe < 0a8b5b74f0e6b6b9ce453bcfa4baa502c4c7577aLinux >= e5dfb815181fcb186d6080ac3a091eadff2d98fe < 6151159618198675e01c391676e579738286c135Linux >= e5dfb815181fcb186d6080ac3a091eadff2d98fe < f294fc71c4a0fa4964f6428a1b4e7929c1d83125Linux 2.6.25Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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