CVE-2024-53174 (GCVE-0-2024-53174)
Vulnerability from cvelistv5
Published
2024-12-27 13:49
Modified
2026-08-05 11:44
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: make sure cache entry active before cache_show The function `c_show` was called with protection from RCU. This only ensures that `cp` will not be freed. Therefore, the reference count for `cp` can drop to zero, which will trigger a refcount use-after-free warning when `cache_get` is called. To resolve this issue, use `cache_get_rcu` to ensure that `cp` remains active. ------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 7 PID: 822 at lib/refcount.c:25 refcount_warn_saturate+0xb1/0x120 CPU: 7 UID: 0 PID: 822 Comm: cat Not tainted 6.12.0-rc3+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 RIP: 0010:refcount_warn_saturate+0xb1/0x120 Call Trace: <TASK> c_show+0x2fc/0x380 [sunrpc] seq_read_iter+0x589/0x770 seq_read+0x1e5/0x270 proc_reg_read+0xe1/0x140 vfs_read+0x125/0x530 ksys_read+0xc1/0x160 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e
References
Impacted products
Vendor Product Version
Linux Linux Version: d48cf356a13073853f19be6ca5ebbecfc2762ebe
Version: d48cf356a13073853f19be6ca5ebbecfc2762ebe
Version: d48cf356a13073853f19be6ca5ebbecfc2762ebe
Version: d48cf356a13073853f19be6ca5ebbecfc2762ebe
Version: d48cf356a13073853f19be6ca5ebbecfc2762ebe
Version: d48cf356a13073853f19be6ca5ebbecfc2762ebe
Version: d48cf356a13073853f19be6ca5ebbecfc2762ebe
Version: d48cf356a13073853f19be6ca5ebbecfc2762ebe
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    "datePublished": "2024-12-27T13:49:18.892Z",
    "dateReserved": "2024-11-19T17:17:25.007Z",
    "dateUpdated": "2026-08-05T11:44:21.962Z",
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\"https://git.kernel.org/stable/c/acfaf37888e0f0732fb6a50ff093dce6d99994d0\"}, {\"url\": \"https://git.kernel.org/stable/c/ec305f303bf070b4f6896b7a76009f702956d402\"}, {\"url\": \"https://git.kernel.org/stable/c/d882e2b7fad3f5e5fac66184a347f408813f654a\"}, {\"url\": \"https://git.kernel.org/stable/c/2862eee078a4d2d1f584e7f24fa50dddfa5f3471\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nSUNRPC: make sure cache entry active before cache_show\\n\\nThe function `c_show` was called with protection from RCU. This only\\nensures that `cp` will not be freed. Therefore, the reference count for\\n`cp` can drop to zero, which will trigger a refcount use-after-free\\nwarning when `cache_get` is called. To resolve this issue, use\\n`cache_get_rcu` to ensure that `cp` remains active.\\n\\n------------[ cut here ]------------\\nrefcount_t: addition on 0; use-after-free.\\nWARNING: CPU: 7 PID: 822 at lib/refcount.c:25\\nrefcount_warn_saturate+0xb1/0x120\\nCPU: 7 UID: 0 PID: 822 Comm: cat Not tainted 6.12.0-rc3+ #1\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\\n1.16.1-2.fc37 04/01/2014\\nRIP: 0010:refcount_warn_saturate+0xb1/0x120\\n\\nCall Trace:\\n \u003cTASK\u003e\\n c_show+0x2fc/0x380 [sunrpc]\\n seq_read_iter+0x589/0x770\\n seq_read+0x1e5/0x270\\n proc_reg_read+0xe1/0x140\\n vfs_read+0x125/0x530\\n ksys_read+0xc1/0x160\\n do_syscall_64+0x5f/0x170\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.287\", \"versionStartIncluding\": \"4.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.231\", \"versionStartIncluding\": \"4.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.174\", \"versionStartIncluding\": \"4.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.120\", \"versionStartIncluding\": \"4.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.64\", \"versionStartIncluding\": \"4.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.11\", \"versionStartIncluding\": \"4.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.2\", \"versionStartIncluding\": \"4.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"4.20\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:55:39.550Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-53174\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:55:39.550Z\", \"dateReserved\": \"2024-11-19T17:17:25.007Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-27T13:49:18.892Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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