{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-23385", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:46.008Z", "datePublished": "2026-03-25T10:28:03.460Z", "dateUpdated": "2026-08-23T12:45:28.126Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:45:28.126Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: clone set on flush only\n\nSyzbot with fault injection triggered a failing memory allocation with\nGFP_KERNEL which results in a WARN splat:\n\niter.err\nWARNING: net/netfilter/nf_tables_api.c:845 at nft_map_deactivate+0x34e/0x3c0 net/netfilter/nf_tables_api.c:845, CPU#0: syz.0.17/5992\nModules linked in:\nCPU: 0 UID: 0 PID: 5992 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026\nRIP: 0010:nft_map_deactivate+0x34e/0x3c0 net/netfilter/nf_tables_api.c:845\nCode: 8b 05 86 5a 4e 09 48 3b 84 24 a0 00 00 00 75 62 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 63 6d fa f7 90 <0f> 0b 90 43\n+80 7c 35 00 00 0f 85 23 fe ff ff e9 26 fe ff ff 89 d9\nRSP: 0018:ffffc900045af780 EFLAGS: 00010293\nRAX: ffffffff89ca45bd RBX: 00000000fffffff4 RCX: ffff888028111e40\nRDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000\nRBP: ffffc900045af870 R08: 0000000000400dc0 R09: 00000000ffffffff\nR10: dffffc0000000000 R11: fffffbfff1d141db R12: ffffc900045af7e0\nR13: 1ffff920008b5f24 R14: dffffc0000000000 R15: ffffc900045af920\nFS: 000055557a6a5500(0000) GS:ffff888125496000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fb5ea271fc0 CR3: 000000003269e000 CR4: 00000000003526f0\nCall Trace:\n \n __nft_release_table+0xceb/0x11f0 net/netfilter/nf_tables_api.c:12115\n nft_rcv_nl_event+0xc25/0xdb0 net/netfilter/nf_tables_api.c:12187\n notifier_call_chain+0x19d/0x3a0 kernel/notifier.c:85\n blocking_notifier_call_chain+0x6a/0x90 kernel/notifier.c:380\n netlink_release+0x123b/0x1ad0 net/netlink/af_netlink.c:761\n __sock_release net/socket.c:662 [inline]\n sock_close+0xc3/0x240 net/socket.c:1455\n\nRestrict set clone to the flush set command in the preparation phase.\nAdd NFT_ITER_UPDATE_CLONE and use it for this purpose, update the rbtree\nand pipapo backends to only clone the set when this iteration type is\nused.\n\nAs for the existing NFT_ITER_UPDATE type, update the pipapo backend to\nuse the existing set clone if available, otherwise use the existing set\nrepresentation. After this update, there is no need to clone a set that\nis being deleted, this includes bound anonymous set.\n\nAn alternative approach to NFT_ITER_UPDATE_CLONE is to add a .clone\ninterface and call it from the flush set path." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/net/netfilter/nf_tables.h", "net/netfilter/nf_tables_api.c", "net/netfilter/nft_set_hash.c", "net/netfilter/nft_set_pipapo.c", "net/netfilter/nft_set_rbtree.c" ], "versions": [ { "version": "744dc9a47a8458ed49becd6123a092c7dae82b8b", "lessThan": "e38f054f0af98224003e600545726fbd96379cfb", "status": "affected", "versionType": "git" }, { "version": "3f1d886cc7c3525d4dbeee24bfa9bb3fe0d48ddc", "lessThan": "9154945a6394029822bd08c24cef5a3f86d0424a", "status": "affected", "versionType": "git" }, { "version": "3f1d886cc7c3525d4dbeee24bfa9bb3fe0d48ddc", "lessThan": "b7f67282ca2be14b727dd698b50e10cf5d8c66f9", "status": "affected", "versionType": "git" }, { "version": "3f1d886cc7c3525d4dbeee24bfa9bb3fe0d48ddc", "lessThan": "fb7fb4016300ac622c964069e286dc83166a5d52", "status": "affected", "versionType": "git" }, { "version": "7c80229aa6e2707e59aa80cc041127cf9a79bcc9", "status": "affected", "versionType": "git" }, { "version": "11fb04a111934eb8fbed077cd943719ed16c6447", "status": "affected", "versionType": "git" }, { "version": "6.6.148", "lessThan": "6.6.151", "status": "affected", "versionType": "semver" }, { "version": "5.15.217", "lessThan": "5.16", "status": "affected", "versionType": "semver" }, { "version": "6.1.184", "lessThan": "6.2", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/net/netfilter/nf_tables.h", "net/netfilter/nf_tables_api.c", "net/netfilter/nft_set_hash.c", "net/netfilter/nft_set_pipapo.c", "net/netfilter/nft_set_rbtree.c" ], "versions": [ { "version": "6.10", "status": "affected" }, { "version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.17", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.7", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.148", "versionEndExcluding": "6.6.151" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.18.17" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.19.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.0" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.217" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.184" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e38f054f0af98224003e600545726fbd96379cfb" }, { "url": "https://git.kernel.org/stable/c/9154945a6394029822bd08c24cef5a3f86d0424a" }, { "url": "https://git.kernel.org/stable/c/b7f67282ca2be14b727dd698b50e10cf5d8c66f9" }, { "url": "https://git.kernel.org/stable/c/fb7fb4016300ac622c964069e286dc83166a5d52" } ], "title": "netfilter: nf_tables: clone set on flush only", "x_generator": { "engine": "bippy-1.2.0" } } } }