{
  "fix": "ALAS2023-2026-1969",
  "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1969",
  "summary": "ALAS2023-2026-1969, released July 20, 2026, fixes 37 CVEs across 19 products. None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 19 packages",
  "released": "2026-07-20T09:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-63800, rated Critical",
  "supported": true,
  "cveCount": 37,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01368,
  "maxCvss": 9.8,
  "vendorAdvisory": "https://alas.aws.amazon.com/AL2023/ALAS-2026-1969.html",
  "appliesTo": [
    {
      "product": "bpftool6.18",
      "productUrl": "https://patchblox.com/security/product/linux/bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "bpftool6.18-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel-livepatch-6.18.38-73.137",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-livepatch-6.18.38-73.137",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-debuginfo-common-aarch64",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-debuginfo-common-x86_64",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-debuginfo-common-x86-64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-devel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-headers",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-modules-extra",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-modules-extra-common",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-tools",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-tools-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "kernel6.18-tools-devel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel6.18-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "microvm-kernel6.18",
      "productUrl": "https://patchblox.com/security/product/linux/microvm-kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "perf6.18",
      "productUrl": "https://patchblox.com/security/product/linux/perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "perf6.18-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "python3-perf6.18",
      "productUrl": "https://patchblox.com/security/product/linux/python3-perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    },
    {
      "product": "python3-perf6.18-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/python3-perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.38-73.137.amzn2023",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-63800",
      "url": "https://patchblox.com/security/cve/CVE-2026-63800",
      "title": "pNFS: Fix use-after-free in pnfs_update_layout()",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00644,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63828",
      "url": "https://patchblox.com/security/cve/CVE-2026-63828",
      "title": "apparmor: mediate the implicit connect of TCP fast open sendmsg",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.0017,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63824",
      "url": "https://patchblox.com/security/cve/CVE-2026-63824",
      "title": "KEYS: fix overflow in keyctl_pkey_params_get_2()",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00169,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63833",
      "url": "https://patchblox.com/security/cve/CVE-2026-63833",
      "title": "ntfs3: reject direct userspace writes to reserved $LX* xattrs",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00144,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53403",
      "url": "https://patchblox.com/security/cve/CVE-2026-53403",
      "title": "fbdev: Fix fb_new_modelist to prevent null-ptr-deref in fb_videomode_to_var",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.0013,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53359",
      "url": "https://patchblox.com/security/cve/CVE-2026-53359",
      "title": "kpatch-patch-4_18_0-553_109_1: This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a run...",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.01368,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53394",
      "url": "https://patchblox.com/security/cve/CVE-2026-53394",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  nfsd: avoid leaking pre-allocated openowner on u...",
      "priority": "High",
      "severity": "high",
      "cvss": 7.5,
      "epss": 0.0063,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53398",
      "url": "https://patchblox.com/security/cve/CVE-2026-53398",
      "title": "NFSD: Fix SECINFO_NO_NAME decode error cleanup",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 9.8,
      "epss": 0.00543,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53392",
      "url": "https://patchblox.com/security/cve/CVE-2026-53392",
      "title": "NFSv4/flexfiles: reject zero filehandle version count",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.8,
      "epss": 0.00529,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53397",
      "url": "https://patchblox.com/security/cve/CVE-2026-53397",
      "title": "nfsd: fix posix_acl leak on SETACL decode failure",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.8,
      "epss": 0.00529,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63808",
      "url": "https://patchblox.com/security/cve/CVE-2026-63808",
      "title": "kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system",
      "priority": "High",
      "severity": "important",
      "cvss": 9.8,
      "epss": 0.00527,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53391",
      "url": "https://patchblox.com/security/cve/CVE-2026-53391",
      "title": "NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.8,
      "epss": 0.00517,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63801",
      "url": "https://patchblox.com/security/cve/CVE-2026-63801",
      "title": "tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00513,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63830",
      "url": "https://patchblox.com/security/cve/CVE-2026-63830",
      "title": "net: skmsg: preserve sg.copy across SG transforms",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 9.4,
      "epss": 0.00441,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53070",
      "url": "https://patchblox.com/security/cve/CVE-2026-53070",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  sctp: disable BH before calling udp_tunnel_xmit_...",
      "priority": "High",
      "severity": "high",
      "cvss": 7.5,
      "epss": 0.00296,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53361",
      "url": "https://patchblox.com/security/cve/CVE-2026-53361",
      "title": "af_unix: Set gc_in_progress to true in unix_gc().",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.8,
      "epss": 0.00258,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63810",
      "url": "https://patchblox.com/security/cve/CVE-2026-63810",
      "title": "block: Avoid mounting the bdev pseudo-filesystem in userspace",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.1,
      "epss": 0.00207,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63807",
      "url": "https://patchblox.com/security/cve/CVE-2026-63807",
      "title": "KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00173,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63826",
      "url": "https://patchblox.com/security/cve/CVE-2026-63826",
      "title": "fbdev: fix use-after-free in store_modes()",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.1,
      "epss": 0.0017,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63823",
      "url": "https://patchblox.com/security/cve/CVE-2026-63823",
      "title": "keys: Pin request_key_auth payload in instantiate paths",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00161,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63806",
      "url": "https://patchblox.com/security/cve/CVE-2026-63806",
      "title": "KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned()",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.3,
      "epss": 0.00156,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64247",
      "url": "https://patchblox.com/security/cve/CVE-2026-64247",
      "title": "KVM: x86: hyper-v: Bound the bank index when querying sparse banks",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.4,
      "epss": 0.00155,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63809",
      "url": "https://patchblox.com/security/cve/CVE-2026-63809",
      "title": "bpf: use kvfree() for replaced sysctl write buffer",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00154,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63829",
      "url": "https://patchblox.com/security/cve/CVE-2026-63829",
      "title": "net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00148,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53381",
      "url": "https://patchblox.com/security/cve/CVE-2026-53381",
      "title": "virtiofs: fix UAF on submount umount",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.1,
      "epss": 0.00139,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53400",
      "url": "https://patchblox.com/security/cve/CVE-2026-53400",
      "title": "i2c: core: fix adapter registration race",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00136,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53388",
      "url": "https://patchblox.com/security/cve/CVE-2026-53388",
      "title": "fuse: re-lock request before replacing page cache folio",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00133,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53389",
      "url": "https://patchblox.com/security/cve/CVE-2026-53389",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net/tcp-ao: fix use-after-free of key in del_asy...",
      "priority": "High",
      "severity": "high",
      "cvss": 7.8,
      "epss": 0.00132,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53393",
      "url": "https://patchblox.com/security/cve/CVE-2026-53393",
      "title": "nfsd: reset write verifier on deferred writeback errors",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7,
      "epss": 0.00129,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53078",
      "url": "https://patchblox.com/security/cve/CVE-2026-53078",
      "title": "bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00121,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64245",
      "url": "https://patchblox.com/security/cve/CVE-2026-64245",
      "title": "fbdev: modedb: fix a possible UAF in fb_find_mode()",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00119,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63802",
      "url": "https://patchblox.com/security/cve/CVE-2026-63802",
      "title": "blk-cgroup: fix UAF in __blkcg_rstat_flush()",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.3,
      "epss": 0.00102,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64248",
      "url": "https://patchblox.com/security/cve/CVE-2026-64248",
      "title": "MIPS: smp: report dying CPU to RCU in stop_this_cpu()",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.5,
      "epss": 0.00158,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64250",
      "url": "https://patchblox.com/security/cve/CVE-2026-64250",
      "title": "LoongArch: Report dying CPU to RCU in stop_this_cpu()",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.5,
      "epss": 0.00158,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53385",
      "url": "https://patchblox.com/security/cve/CVE-2026-53385",
      "title": "vc_screen: fix null-ptr-deref in vcs_notifier() during concurrent vcs_write",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.5,
      "epss": 0.00132,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64244",
      "url": "https://patchblox.com/security/cve/CVE-2026-64244",
      "title": "drivers/base/memory: set mem-\u003Ealtmap after successful device registration",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.5,
      "epss": 0.00115,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64253",
      "url": "https://patchblox.com/security/cve/CVE-2026-64253",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  kernel/fork: clear PF_BLOCK_TS in copy_process()...",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 5.5,
      "epss": 0.00114,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}