CVE-2026-52970netfilter: nft_ct: fix missing expect put in obj eval
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_ct: fix missing expect put in obj eval nft_ct_expect_obj_eval() allocates an expectation and may call nf_ct_expect_related(), but never drops its local reference. Add nf_ct_expect_put(exp) before return to balance allocation.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 857b46027d6f91150797295752581b7155b9d0e1 before cdb9a25dd3416d427e8b2753210f8baf44207577; 857b46027d6f91150797295752581b7155b9d0e1 builds before 26ab32ec73941871c97562ee1f39587950dc3b68; 857b46027d6f91150797295752581b7155b9d0e1 builds before 7b96242ceedfe249f158419f3254bcee04173ffe; from 857b46027d6f91150797295752581b7155b9d0e1 before ecca618e1e339494911090474ed87742c0f73976; 857b46027d6f91150797295752581b7155b9d0e1 builds before 2aef1b13d5c0285f340512c6c07eb858fd018fd8; 857b46027d6f91150797295752581b7155b9d0e1 builds before 1dced0725e2fae3ac3416274db20a7ff5a46931d; 857b46027d6f91150797295752581b7155b9d0e1 builds before 84c422cea5a45fe56be839f25880f21fd33940cd; 857b46027d6f91150797295752581b7155b9d0e1 builds before 19f94b6fee75b3ef7fbc06f3745b9a771a8a19a4 | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.3 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10; 7.1; and 2 more ranges | NVD |
References
- https://git.kernel.org/stable/c/cdb9a25dd3416d427e8b2753210f8baf44207577patch
- https://git.kernel.org/stable/c/26ab32ec73941871c97562ee1f39587950dc3b68patch
- https://git.kernel.org/stable/c/7b96242ceedfe249f158419f3254bcee04173ffepatch
- https://git.kernel.org/stable/c/ecca618e1e339494911090474ed87742c0f73976patch
- https://git.kernel.org/stable/c/2aef1b13d5c0285f340512c6c07eb858fd018fd8patch
- https://git.kernel.org/stable/c/1dced0725e2fae3ac3416274db20a7ff5a46931dpatch
- https://git.kernel.org/stable/c/84c422cea5a45fe56be839f25880f21fd33940cdpatch
- https://git.kernel.org/stable/c/19f94b6fee75b3ef7fbc06f3745b9a771a8a19a4patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.