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fprobe: Release rethook after the ftrace_ops is unregistered

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: fprobe: Release rethook after the ftrace_ops is unregistered While running bpf selftests it's possible to get following fault: general protection fault, probably for non-canonical address \ 0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI ... Call Trace: fprobe_handler+0xc1/0x270 ? __pfx_bpf_testmod_init+0x10/0x10 ? __pfx_bpf_testmod_init+0x10/0x10 ? bpf_fentry_test1+0x5/0x10 ? bpf_fentry_test1+0x5/0x10 ? bpf_testmod_init+0x22/0x80 ? do_one_initcall+0x63/0x2e0 ? rcu_is_watching+0xd/0x40 ? kmalloc_trace+0xaf/0xc0 ? do_init_module+0x60/0x250 ? __do_sys_finit_module+0xac/0x120 ? do_syscall_64+0x37/0x90 ? entry_SYSCALL_64_after_hwframe+0x72/0xdc In unregister_fprobe function we can't release fp->rethook while it's possible there are some of its users still running on another cpu. Moving rethook_free call after fp->ops is unregistered with unregister_ftrace_function call.

Announced Source revision 1
Original source ↗

CVE-2023-53557

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2023-53557

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
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Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5b0ab78998e32564a011b14c4c7f9c81e2d42b9d",
        "lessThan": "ce3ec57faff559ccae1e0150c1f077eb2df648a4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5b0ab78998e32564a011b14c4c7f9c81e2d42b9d",
        "lessThan": "03d63255a5783243c110aec5e6ae2f1475c3be76",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5b0ab78998e32564a011b14c4c7f9c81e2d42b9d",
        "lessThan": "5f81018753dfd4989e33ece1f0cb6b8aae498b82",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "kernel/trace/fprobe.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.18"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.18",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.1.40",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.4.5",
        "versionType": "semver",
        "lessThanOrEqual": "6.4.*"
      },
      {
        "status": "unaffected",
        "version": "6.5",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "kernel/trace/fprobe.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2023-53557

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30284 · Revision 1
Added to Heist Feed
Publisher date
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