CVE-2026-63801 (GCVE-0-2026-63801)

Vulnerability from cvelistv5 – Published: 2026-07-19 12:02 – Updated: 2026-07-20 13:40
VLAI
Title
tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done
Summary
In the Linux kernel, the following vulnerability has been resolved: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done tipc_aead_decrypt() goes straight from tipc_bearer_hold(b) to crypto_aead_decrypt(req) without taking a reference on the netns, unlike the encrypt path. When crypto_aead_decrypt() is offloaded asynchronously (e.g. the SIMD aead wrapper queuing to cryptd), the cryptd worker runs tipc_aead_decrypt_done() later. If the bearer's netns is torn down in the meantime, cleanup_net() -> tipc_exit_net() -> tipc_crypto_stop() frees the per-netns tipc_crypto, and the completion then reads it: tipc_aead_decrypt_done() dereferences aead->crypto->stats and aead->crypto->net, and tipc_crypto_rcv_complete() dereferences aead->crypto->aead[] and the node table -- reading freed memory. Decoded KASAN splat (v7.1-rc7, CONFIG_KASAN_INLINE + TIPC + TIPC_CRYPTO): BUG: KASAN: slab-use-after-free in tipc_aead_decrypt_done (net/tipc/crypto.c:999) Read of size 8 at addr ffff8881056258a8 by task kworker/u16:2/51 Workqueue: events_unbound Call Trace: tipc_aead_decrypt_done (net/tipc/crypto.c:999) process_one_work (kernel/workqueue.c:3314) worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478) kthread (kernel/kthread.c:436) ret_from_fork (arch/x86/kernel/process.c:158) ret_from_fork_asm (arch/x86/entry/entry_64.S:245) Allocated by task 169: __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415) tipc_crypto_start (net/tipc/crypto.c:1502) tipc_init_net (net/tipc/core.c:72) ops_init (net/core/net_namespace.c:137) setup_net (net/core/net_namespace.c:446) copy_net_ns (net/core/net_namespace.c:579) create_new_namespaces (kernel/nsproxy.c:132) __x64_sys_unshare (kernel/fork.c:3316) do_syscall_64 (arch/x86/entry/syscall_64.c:63) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Freed by task 8: kfree (mm/slub.c:6566) tipc_exit_net (net/tipc/core.c:119) cleanup_net (net/core/net_namespace.c:704) process_one_work (kernel/workqueue.c:3314) kthread (kernel/kthread.c:436) This is the same class of bug that commit e279024617134 ("net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done") fixed for the encrypt side. The encrypt path takes maybe_get_net(aead->crypto->net) before crypto_aead_encrypt() and drops it with put_net() on the synchronous return paths and in tipc_aead_encrypt_done(); the -EINPROGRESS/-EBUSY return keeps the reference for the async callback to release. The decrypt path was left without the equivalent guard. Mirror the encrypt-side fix on the decrypt path: take a net reference before crypto_aead_decrypt() (failing with -ENODEV and the matching bearer put if it cannot be acquired), keep it across the -EINPROGRESS/-EBUSY async return, and drop it with put_net() on the synchronous success/error return and at the end of tipc_aead_decrypt_done(). Reproduced under KASAN on v7.1-rc7: a UDP bearer with a cluster key is flooded with crafted encrypted frames from an unknown peer (driving the cluster-key decrypt path) while the bearer's netns is repeatedly torn down. The completion must run asynchronously to outlive tipc_crypto_stop(); on x86 the stock aesni gcm(aes) now decrypts synchronously, so the async path was exercised via cryptd offload. The unguarded aead->crypto dereference in tipc_aead_decrypt_done() is the unpatched upstream path; tipc_aead_decrypt() still lacks maybe_get_net(aead->crypto->net), so the completion can outlive the free on any config where crypto_aead_decrypt() goes async. Found by 0sec automated security-research tooling (https://0sec.ai).
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 , < 171d31245d11bf84836fad3b394cb465a4d008ec (git)
Affected: fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 , < 2d1f21419ec121232c916d3a3fc9b6766473a0e7 (git)
Affected: fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 , < 0a780653b2a7569a7af9be7d0b00b1251baca63a (git)
Affected: fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 , < eaca7dae02fab70c8d223cffe03cec1b93249ce2 (git)
Affected: fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 , < dca7713fe044a2067387948557ea099056e1679e (git)
Affected: fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 , < e18769616fd5a90ec1e12aabbba544c488284292 (git)
Affected: fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 , < 1eea5e1820a2f5164d706bd1277bc97ff31ce32d (git)
Affected: fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 , < bda3348872a2ef0d19f2df6aa8cb5025adce2f20 (git)
Create a notification for this product.
Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.260 , ≤ 5.10.* (semver)
Unaffected: 5.15.211 , ≤ 5.15.* (semver)
Unaffected: 6.1.177 , ≤ 6.1.* (semver)
Unaffected: 6.6.144 , ≤ 6.6.* (semver)
Unaffected: 6.12.95 , ≤ 6.12.* (semver)
Unaffected: 6.18.38 , ≤ 6.18.* (semver)
Unaffected: 7.1.3 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix slab-use-after-free Read in tipc_aead_decrypt_done\n\ntipc_aead_decrypt() goes straight from tipc_bearer_hold(b) to\ncrypto_aead_decrypt(req) without taking a reference on the netns, unlike\nthe encrypt path. When crypto_aead_decrypt() is offloaded asynchronously\n(e.g. the SIMD aead wrapper queuing to cryptd), the cryptd worker runs\ntipc_aead_decrypt_done() later. If the bearer\u0027s netns is torn down in the\nmeantime, cleanup_net() -\u003e tipc_exit_net() -\u003e tipc_crypto_stop() frees the\nper-netns tipc_crypto, and the completion then reads it:\ntipc_aead_decrypt_done() dereferences aead-\u003ecrypto-\u003estats and\naead-\u003ecrypto-\u003enet, and tipc_crypto_rcv_complete() dereferences\naead-\u003ecrypto-\u003eaead[] and the node table -- reading freed memory.\n\nDecoded KASAN splat (v7.1-rc7, CONFIG_KASAN_INLINE + TIPC + TIPC_CRYPTO):\n\n  BUG: KASAN: slab-use-after-free in tipc_aead_decrypt_done (net/tipc/crypto.c:999)\n  Read of size 8 at addr ffff8881056258a8 by task kworker/u16:2/51\n  Workqueue: events_unbound\n  Call Trace:\n   tipc_aead_decrypt_done (net/tipc/crypto.c:999)\n   process_one_work (kernel/workqueue.c:3314)\n   worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)\n   kthread (kernel/kthread.c:436)\n   ret_from_fork (arch/x86/kernel/process.c:158)\n   ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n\n  Allocated by task 169:\n   __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)\n   tipc_crypto_start (net/tipc/crypto.c:1502)\n   tipc_init_net (net/tipc/core.c:72)\n   ops_init (net/core/net_namespace.c:137)\n   setup_net (net/core/net_namespace.c:446)\n   copy_net_ns (net/core/net_namespace.c:579)\n   create_new_namespaces (kernel/nsproxy.c:132)\n   __x64_sys_unshare (kernel/fork.c:3316)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:63)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\n  Freed by task 8:\n   kfree (mm/slub.c:6566)\n   tipc_exit_net (net/tipc/core.c:119)\n   cleanup_net (net/core/net_namespace.c:704)\n   process_one_work (kernel/workqueue.c:3314)\n   kthread (kernel/kthread.c:436)\n\nThis is the same class of bug that commit e279024617134 (\"net/tipc: fix\nslab-use-after-free Read in tipc_aead_encrypt_done\") fixed for the encrypt\nside. The encrypt path takes maybe_get_net(aead-\u003ecrypto-\u003enet) before\ncrypto_aead_encrypt() and drops it with put_net() on the synchronous\nreturn paths and in tipc_aead_encrypt_done(); the -EINPROGRESS/-EBUSY\nreturn keeps the reference for the async callback to release. The decrypt\npath was left without the equivalent guard.\n\nMirror the encrypt-side fix on the decrypt path: take a net reference\nbefore crypto_aead_decrypt() (failing with -ENODEV and the matching\nbearer put if it cannot be acquired), keep it across the\n-EINPROGRESS/-EBUSY async return, and drop it with put_net() on the\nsynchronous success/error return and at the end of\ntipc_aead_decrypt_done().\n\nReproduced under KASAN on v7.1-rc7: a UDP bearer with a cluster key is\nflooded with crafted encrypted frames from an unknown peer (driving the\ncluster-key decrypt path) while the bearer\u0027s netns is repeatedly torn\ndown. The completion must run asynchronously to outlive\ntipc_crypto_stop(); on x86 the stock aesni gcm(aes) now decrypts\nsynchronously, so the async path was exercised via cryptd offload. The\nunguarded aead-\u003ecrypto dereference in tipc_aead_decrypt_done() is the\nunpatched upstream path; tipc_aead_decrypt() still lacks\nmaybe_get_net(aead-\u003ecrypto-\u003enet), so the completion can outlive the free\non any config where crypto_aead_decrypt() goes async.\n\nFound by 0sec automated security-research tooling (https://0sec.ai)."
        }
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            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T13:40:11.527Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/171d31245d11bf84836fad3b394cb465a4d008ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d1f21419ec121232c916d3a3fc9b6766473a0e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/0a780653b2a7569a7af9be7d0b00b1251baca63a"
        },
        {
          "url": "https://git.kernel.org/stable/c/eaca7dae02fab70c8d223cffe03cec1b93249ce2"
        },
        {
          "url": "https://git.kernel.org/stable/c/dca7713fe044a2067387948557ea099056e1679e"
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        {
          "url": "https://git.kernel.org/stable/c/1eea5e1820a2f5164d706bd1277bc97ff31ce32d"
        },
        {
          "url": "https://git.kernel.org/stable/c/bda3348872a2ef0d19f2df6aa8cb5025adce2f20"
        }
      ],
      "title": "tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63801",
    "datePublished": "2026-07-19T12:02:07.457Z",
    "dateReserved": "2026-07-19T07:54:57.013Z",
    "dateUpdated": "2026-07-20T13:40:11.527Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-63801",
      "date": "2026-07-21",
      "epss": "0.00455",
      "percentile": "0.36831"
    },
    "microsoft_vex": {
      "current_release_date": "2026-07-21T01:39:19.000Z",
      "cve": "CVE-2026-63801",
      "id": "msrc_CVE-2026-63801",
      "initial_release_date": "2026-07-20T01:07:32.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-63801.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-63801\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-19T12:16:52.680\",\"lastModified\":\"2026-07-20T15:16:46.850\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntipc: fix slab-use-after-free Read in tipc_aead_decrypt_done\\n\\ntipc_aead_decrypt() goes straight from tipc_bearer_hold(b) to\\ncrypto_aead_decrypt(req) without taking a reference on the netns, unlike\\nthe encrypt path. When crypto_aead_decrypt() is offloaded asynchronously\\n(e.g. the SIMD aead wrapper queuing to cryptd), the cryptd worker runs\\ntipc_aead_decrypt_done() later. If the bearer\u0027s netns is torn down in the\\nmeantime, cleanup_net() -\u003e tipc_exit_net() -\u003e tipc_crypto_stop() frees the\\nper-netns tipc_crypto, and the completion then reads it:\\ntipc_aead_decrypt_done() dereferences aead-\u003ecrypto-\u003estats and\\naead-\u003ecrypto-\u003enet, and tipc_crypto_rcv_complete() dereferences\\naead-\u003ecrypto-\u003eaead[] and the node table -- reading freed memory.\\n\\nDecoded KASAN splat (v7.1-rc7, CONFIG_KASAN_INLINE + TIPC + TIPC_CRYPTO):\\n\\n  BUG: KASAN: slab-use-after-free in tipc_aead_decrypt_done (net/tipc/crypto.c:999)\\n  Read of size 8 at addr ffff8881056258a8 by task kworker/u16:2/51\\n  Workqueue: events_unbound\\n  Call Trace:\\n   tipc_aead_decrypt_done (net/tipc/crypto.c:999)\\n   process_one_work (kernel/workqueue.c:3314)\\n   worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)\\n   kthread (kernel/kthread.c:436)\\n   ret_from_fork (arch/x86/kernel/process.c:158)\\n   ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\\n\\n  Allocated by task 169:\\n   __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)\\n   tipc_crypto_start (net/tipc/crypto.c:1502)\\n   tipc_init_net (net/tipc/core.c:72)\\n   ops_init (net/core/net_namespace.c:137)\\n   setup_net (net/core/net_namespace.c:446)\\n   copy_net_ns (net/core/net_namespace.c:579)\\n   create_new_namespaces (kernel/nsproxy.c:132)\\n   __x64_sys_unshare (kernel/fork.c:3316)\\n   do_syscall_64 (arch/x86/entry/syscall_64.c:63)\\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\\n\\n  Freed by task 8:\\n   kfree (mm/slub.c:6566)\\n   tipc_exit_net (net/tipc/core.c:119)\\n   cleanup_net (net/core/net_namespace.c:704)\\n   process_one_work (kernel/workqueue.c:3314)\\n   kthread (kernel/kthread.c:436)\\n\\nThis is the same class of bug that commit e279024617134 (\\\"net/tipc: fix\\nslab-use-after-free Read in tipc_aead_encrypt_done\\\") fixed for the encrypt\\nside. The encrypt path takes maybe_get_net(aead-\u003ecrypto-\u003enet) before\\ncrypto_aead_encrypt() and drops it with put_net() on the synchronous\\nreturn paths and in tipc_aead_encrypt_done(); the -EINPROGRESS/-EBUSY\\nreturn keeps the reference for the async callback to release. The decrypt\\npath was left without the equivalent guard.\\n\\nMirror the encrypt-side fix on the decrypt path: take a net reference\\nbefore crypto_aead_decrypt() (failing with -ENODEV and the matching\\nbearer put if it cannot be acquired), keep it across the\\n-EINPROGRESS/-EBUSY async return, and drop it with put_net() on the\\nsynchronous success/error return and at the end of\\ntipc_aead_decrypt_done().\\n\\nReproduced under KASAN on v7.1-rc7: a UDP bearer with a cluster key is\\nflooded with crafted encrypted frames from an unknown peer (driving the\\ncluster-key decrypt path) while the bearer\u0027s netns is repeatedly torn\\ndown. The completion must run asynchronously to outlive\\ntipc_crypto_stop(); on x86 the stock aesni gcm(aes) now decrypts\\nsynchronously, so the async path was exercised via cryptd offload. The\\nunguarded aead-\u003ecrypto dereference in tipc_aead_decrypt_done() is the\\nunpatched upstream path; tipc_aead_decrypt() still lacks\\nmaybe_get_net(aead-\u003ecrypto-\u003enet), so the completion can outlive the free\\non any config where crypto_aead_decrypt() goes async.\\n\\nFound by 0sec automated security-research tooling (https://0sec.ai).\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/tipc/crypto.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"fc1b6d6de2208774efd2a20bf0daddb02d18b1e0\",\"lessThan\":\"171d31245d11bf84836fad3b394cb465a4d008ec\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fc1b6d6de2208774efd2a20bf0daddb02d18b1e0\",\"lessThan\":\"2d1f21419ec121232c916d3a3fc9b6766473a0e7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fc1b6d6de2208774efd2a20bf0daddb02d18b1e0\",\"lessThan\":\"0a780653b2a7569a7af9be7d0b00b1251baca63a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fc1b6d6de2208774efd2a20bf0daddb02d18b1e0\",\"lessThan\":\"eaca7dae02fab70c8d223cffe03cec1b93249ce2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fc1b6d6de2208774efd2a20bf0daddb02d18b1e0\",\"lessThan\":\"dca7713fe044a2067387948557ea099056e1679e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fc1b6d6de2208774efd2a20bf0daddb02d18b1e0\",\"lessThan\":\"e18769616fd5a90ec1e12aabbba544c488284292\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fc1b6d6de2208774efd2a20bf0daddb02d18b1e0\",\"lessThan\":\"1eea5e1820a2f5164d706bd1277bc97ff31ce32d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fc1b6d6de2208774efd2a20bf0daddb02d18b1e0\",\"lessThan\":\"bda3348872a2ef0d19f2df6aa8cb5025adce2f20\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/tipc/crypto.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.5\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.260\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.211\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.177\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.144\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.95\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.38\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.3\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0a780653b2a7569a7af9be7d0b00b1251baca63a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/171d31245d11bf84836fad3b394cb465a4d008ec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1eea5e1820a2f5164d706bd1277bc97ff31ce32d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2d1f21419ec121232c916d3a3fc9b6766473a0e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bda3348872a2ef0d19f2df6aa8cb5025adce2f20\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dca7713fe044a2067387948557ea099056e1679e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e18769616fd5a90ec1e12aabbba544c488284292\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eaca7dae02fab70c8d223cffe03cec1b93249ce2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-20T17:08:01+00:00",
      "cve": "CVE-2026-63801",
      "id": "CVE-2026-63801",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63801.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.