CVE-2026-90107net/smc: free pending qentry in smc_llc_flow_stop() before memset
- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: net/smc: free pending qentry in smc_llc_flow_stop() before memset smc_llc_flow_stop() resets a flow struct with a blind memset: spin_lock_bh(&lgr->llc_flow_lock); memset(flow, 0, sizeof(*flow)); flow->type = SMC_LLC_FLOW_NONE; spin_unlock_bh(&lgr->llc_flow_lock); If flow->qentry is non-NULL at this point the pointer is overwritten without the allocation being freed, leaking one kmalloc object. A late-arriving duplicate CONFIRM_LINK or ADD_LINK_CONT message can set flow->qentry after the legitimate message has been consumed by the waiter via smc_llc_flow_qentry_clr() (which NULLs the pointer but leaves flow->type non-zero) but before the flow completes and smc_llc_flow_stop() runs. In that window the duplicate is stashed into flow->qentry, and then lost when smc_llc_flow_stop() zeros the struct. Call smc_llc_flow_qentry_del() inside the lock before the memset. smc_llc_flow_qentry_del() already checks flow->qentry before freeing, so the normal case where no entry is pending is a no-op.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 32 days later
· 32 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.22% · top 88% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 555da9af827d95134656fa459c8f3ece04dd867a – < 8e3deb150a5237b672c4579e69a6deb02027dbed
- affected 555da9af827d95134656fa459c8f3ece04dd867a – < 11bc373ee6630709f0c2da2e7860c23d503c9e9d
- affected 555da9af827d95134656fa459c8f3ece04dd867a – < 032aec7d03c9102616b98fea74f8f7145e7f867c
- affected 555da9af827d95134656fa459c8f3ece04dd867a – < 957dba2b8b5aebfe09caa6a6b22b958079082eab
- affected 555da9af827d95134656fa459c8f3ece04dd867a – < f03aa5d36ae3c4068a1c3885146be99aa7fd9307
- affected 555da9af827d95134656fa459c8f3ece04dd867a – < 0879ea157acc1ac6752f6fcb755d1f91a2359238
- affected 555da9af827d95134656fa459c8f3ece04dd867a – < 5ff429dd6725fa6c1e17a4ed0be8ab675f67a98b
- affected 555da9af827d95134656fa459c8f3ece04dd867a – < 5ee0ceddc7785c6dcf4a8107fef01f0414a354f4
- affected 5.8
- unaffected < 5.8
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/8e3deb150a5237b672c4579e69a6deb02027dbed (opens in a new tab)
- https://git.kernel.org/stable/c/11bc373ee6630709f0c2da2e7860c23d503c9e9d (opens in a new tab)
- https://git.kernel.org/stable/c/032aec7d03c9102616b98fea74f8f7145e7f867c (opens in a new tab)
- https://git.kernel.org/stable/c/957dba2b8b5aebfe09caa6a6b22b958079082eab (opens in a new tab)
- https://git.kernel.org/stable/c/f03aa5d36ae3c4068a1c3885146be99aa7fd9307 (opens in a new tab)
- https://git.kernel.org/stable/c/0879ea157acc1ac6752f6fcb755d1f91a2359238 (opens in a new tab)
- https://git.kernel.org/stable/c/5ff429dd6725fa6c1e17a4ed0be8ab675f67a98b (opens in a new tab)
- https://git.kernel.org/stable/c/5ee0ceddc7785c6dcf4a8107fef01f0414a354f4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-81700 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-90107)Record last updated .