{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-48923",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-48923",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2024-08-22T01:32:58.084Z",
    "updatedAt": "2026-08-05T08:52:55.898Z",
    "importedAt": "2026-10-24T01:56:45.230Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "btrfs: prevent copying too big compressed lzo segment",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: prevent copying too big compressed lzo segment\n\nCompressed length can be corrupted to be a lot larger than memory\nwe have allocated for buffer.\nThis will cause memcpy in copy_compressed_segment to write outside\nof allocated memory.\n\nThis mostly results in stuck read syscall but sometimes when using\nbtrfs send can get #GP\n\n  kernel: general protection fault, probably for non-canonical address 0x841551d5c1000: 0000 [#1] PREEMPT SMP NOPTI\n  kernel: CPU: 17 PID: 264 Comm: kworker/u256:7 Tainted: P           OE     5.17.0-rc2-1 #12\n  kernel: Workqueue: btrfs-endio btrfs_work_helper [btrfs]\n  kernel: RIP: 0010:lzo_decompress_bio (./include/linux/fortify-string.h:225 fs/btrfs/lzo.c:322 fs/btrfs/lzo.c:394) btrfs\n  Code starting with the faulting instruction\n  ===========================================\n     0:*  48 8b 06                mov    (%rsi),%rax              <-- trapping instruction\n     3:   48 8d 79 08             lea    0x8(%rcx),%rdi\n     7:   48 83 e7 f8             and    $0xfffffffffffffff8,%rdi\n     b:   48 89 01                mov    %rax,(%rcx)\n     e:   44 89 f0                mov    %r14d,%eax\n    11:   48 8b 54 06 f8          mov    -0x8(%rsi,%rax,1),%rdx\n  kernel: RSP: 0018:ffffb110812efd50 EFLAGS: 00010212\n  kernel: RAX: 0000000000001000 RBX: 000000009ca264c8 RCX: ffff98996e6d8ff8\n  kernel: RDX: 0000000000000064 RSI: 000841551d5c1000 RDI: ffffffff9500435d\n  kernel: RBP: ffff989a3be856c0 R08: 0000000000000000 R09: 0000000000000000\n  kernel: R10: 0000000000000000 R11: 0000000000001000 R12: ffff98996e6d8000\n  kernel: R13: 0000000000000008 R14: 0000000000001000 R15: 000841551d5c1000\n  kernel: FS:  0000000000000000(0000) GS:ffff98a09d640000(0000) knlGS:0000000000000000\n  kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  kernel: CR2: 00001e9f984d9ea8 CR3: 000000014971a000 CR4: 00000000003506e0\n  kernel: Call Trace:\n  kernel:  <TASK>\n  kernel: end_compressed_bio_read (fs/btrfs/compression.c:104 fs/btrfs/compression.c:1363 fs/btrfs/compression.c:323) btrfs\n  kernel: end_workqueue_fn (fs/btrfs/disk-io.c:1923) btrfs\n  kernel: btrfs_work_helper (fs/btrfs/async-thread.c:326) btrfs\n  kernel: process_one_work (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:212 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2312)\n  kernel: worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2455)\n  kernel: ? process_one_work (kernel/workqueue.c:2397)\n  kernel: kthread (kernel/kthread.c:377)\n  kernel: ? kthread_complete_and_exit (kernel/kthread.c:332)\n  kernel: ret_from_fork (arch/x86/entry/entry_64.S:301)\n  kernel:  </TASK>",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8df508b7a44cd8110c726057cd28e8f8116885eb"
            },
            {
              "version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e326bd06cdde46df952361456232022298281d16"
            },
            {
              "version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278",
              "status": "affected",
              "versionType": "git",
              "lessThan": "741b23a970a79d5d3a1db2d64fa2c7b375a4febb"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "5.15.26",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.16.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.16.*"
            },
            {
              "version": "5.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}