CVE-2025-39965 (GCVE-0-2025-39965)

Vulnerability from cvelistv5 – Published: 2025-10-13 13:48 – Updated: 2025-10-13 13:48
VLAI?
Title
xfrm: xfrm_alloc_spi shouldn't use 0 as SPI
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3d8090bb53424432fa788fe9a49e8ceca74f0544 , < 0baf92d0b1590b903c1f4ead75e61715e50e8146 (git)
Affected: 2fc5b54368a1bf1d2d74b4d3b8eea5309a653e38 , < 9fcedabaae0096f712bbb4ccca6a8538af1cd1c8 (git)
Affected: 29e9158f91f99057dbd35db5e8674d93b38549fe , < a78e55776522373c446f18d5002a8de4b09e6bf7 (git)
Affected: 94f39804d891cffe4ce17737d295f3b195bc7299 , < cd8ae32e4e4652db55bce6b9c79267d8946765a9 (git)
Affected: c67d4e7a8f90fb6361ca89d4d5c9a28f4e935e47 (git)
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    Linux Linux Affected: 6.6.103 , < 6.6.109 (semver)
Affected: 6.12.43 , < 6.12.50 (semver)
Affected: 6.16.2 , < 6.16.10 (semver)
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Detection rules are retrieved from Rulezet.