CVE-2026-90107
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net/smc: free pending qentry in smc_llc_flow_stop() before memset
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 555da9af827d95134656fa459c8f3ece04dd867a | affected | git | 8e3deb150a5237b672c4579e69a6deb02027dbed | Unavailable | None listed |
| 555da9af827d95134656fa459c8f3ece04dd867a | affected | git | 11bc373ee6630709f0c2da2e7860c23d503c9e9d | Unavailable | None listed |
| 555da9af827d95134656fa459c8f3ece04dd867a | affected | git | 032aec7d03c9102616b98fea74f8f7145e7f867c | Unavailable | None listed |
| 555da9af827d95134656fa459c8f3ece04dd867a | affected | git | 957dba2b8b5aebfe09caa6a6b22b958079082eab | Unavailable | None listed |
| 555da9af827d95134656fa459c8f3ece04dd867a | affected | git | f03aa5d36ae3c4068a1c3885146be99aa7fd9307 | Unavailable | None listed |
| 555da9af827d95134656fa459c8f3ece04dd867a | affected | git | 0879ea157acc1ac6752f6fcb755d1f91a2359238 | Unavailable | None listed |
| 555da9af827d95134656fa459c8f3ece04dd867a | affected | git | 5ff429dd6725fa6c1e17a4ed0be8ab675f67a98b | Unavailable | None listed |
| 555da9af827d95134656fa459c8f3ece04dd867a | affected | git | 5ee0ceddc7785c6dcf4a8107fef01f0414a354f4 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.8 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.52 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.6 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |