CVE-2022-50288 (GCVE-0-2022-50288)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:21 – Updated: 2025-09-15 14:21
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure adapter->dcb would get silently freed inside qlcnic_dcb_enable() in case qlcnic_dcb_attach() would return an error, which always happens under OOM conditions. This would lead to use-after-free because both of the existing callers invoke qlcnic_dcb_get_info() on the obtained pointer, which is potentially freed at that point. Propagate errors from qlcnic_dcb_enable(), and instead free the dcb pointer at callsite using qlcnic_dcb_free(). This also removes the now unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around kfree() also causing memory leaks for partially initialized dcb. Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3c44bba1d270cb1620b4fe76786d0968118cb86b , < 36999236f0b12d5de21a6f40e93b570727b9ceb2 (git)
Affected: 3c44bba1d270cb1620b4fe76786d0968118cb86b , < d12a7510293d3370b234b0b7c5eda33e58786768 (git)
Affected: 3c44bba1d270cb1620b4fe76786d0968118cb86b , < 8f97eeb02a553cdc78c83a0596448a370e1518c4 (git)
Affected: 3c44bba1d270cb1620b4fe76786d0968118cb86b , < 513787ff9a331b461115e8a145a983d650a84fcb (git)
Affected: 3c44bba1d270cb1620b4fe76786d0968118cb86b , < 95df720e64a6409d8152827a776c43f615e3321a (git)
Affected: 3c44bba1d270cb1620b4fe76786d0968118cb86b , < 8df1dc04ce0e4c03b51a756749c250a9cb17d707 (git)
Affected: 3c44bba1d270cb1620b4fe76786d0968118cb86b , < a2a694e6edbdb3efb34e1613a31fdcf6cf444a55 (git)
Affected: 3c44bba1d270cb1620b4fe76786d0968118cb86b , < 13a7c8964afcd8ca43c0b6001ebb0127baa95362 (git)
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    Linux Linux Affected: 3.14
Unaffected: 0 , < 3.14 (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.87 , ≤ 5.15.* (semver)
Unaffected: 6.0.19 , ≤ 6.0.* (semver)
Unaffected: 6.1.5 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
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            "drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nqlcnic: prevent -\u003edcb use-after-free on qlcnic_dcb_enable() failure\n\nadapter-\u003edcb would get silently freed inside qlcnic_dcb_enable() in\ncase qlcnic_dcb_attach() would return an error, which always happens\nunder OOM conditions. This would lead to use-after-free because both\nof the existing callers invoke qlcnic_dcb_get_info() on the obtained\npointer, which is potentially freed at that point.\n\nPropagate errors from qlcnic_dcb_enable(), and instead free the dcb\npointer at callsite using qlcnic_dcb_free(). This also removes the now\nunused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around\nkfree() also causing memory leaks for partially initialized dcb.\n\nFound by Linux Verification Center (linuxtesting.org) with the SVACE\nstatic analysis tool."
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    "dateReserved": "2025-09-15T13:58:00.977Z",
    "dateUpdated": "2025-09-15T14:21:24.427Z",
    "state": "PUBLISHED"
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  }
}


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Sightings

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Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.