CVE-2025-39965High· 7.8▾ MidnightPoC availableIn the Linux kernel, the following vulnerability has been resolved: xfrm: xfrm_alloc_spi shouldn't use 0 as SPI x->id.spi == 0 means "no SPI assigned", but since commit 94f39804d891 ("xfrm: Duplicate SPI Handling"), we now create state…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 42.9 · likelihood 0 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
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 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
Last analysed / modified upstream
0.2% → 0.2%
1 GitHub repo (last check)
In the Linux kernel, the following vulnerability has been resolved:
xfrm: xfrm_alloc_spi shouldn't use 0 as SPI
x->id.spi == 0 means "no SPI assigned", but since commit 94f39804d891 ("xfrm: Duplicate SPI Handling"), we now create states and add them to the byspi list with this value.
__xfrm_state_delete doesn't remove those states from the byspi list, since they shouldn't be there, and this shows up as a UAF the next time we go through the byspi list.
Linux >= 3d8090bb53424432fa788fe9a49e8ceca74f0544 < 0baf92d0b1590b903c1f4ead75e61715e50e8146Linux >= 2fc5b54368a1bf1d2d74b4d3b8eea5309a653e38 < 9fcedabaae0096f712bbb4ccca6a8538af1cd1c8Linux >= 29e9158f91f99057dbd35db5e8674d93b38549fe < a78e55776522373c446f18d5002a8de4b09e6bf7Linux >= 94f39804d891cffe4ce17737d295f3b195bc7299 < cd8ae32e4e4652db55bce6b9c79267d8946765a9Linux fb58962aa3b9359988c7b5b15a971fd9ad5b0ecdLinux c67d4e7a8f90fb6361ca89d4d5c9a28f4e935e47Linux >= 6.1.191 < 6.2Linux >= 6.15.11 < 6.16Linux >= 6.6.103 < 6.6.109Linux >= 6.12.43 < 6.12.50Linux >= 6.16.2 < 6.16.10Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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